What should you do if your teeth hurt when you drink cold drinks?👄👄👄

Many people like to drink cold drinks and eat ice cream, but these can make your teeth sore. What's the problem? Is it a cavity? What can you do to improve the situation?

There are many reasons why your teeth may feel sore when you drink cold drinks. The best way is of course to go to a dentist for diagnosis and treatment.

A tooth is actually a closed structure. The ones that are exposed outside the gums are called crowns. Its surface is a hard layer of enamel and the inside is dentin. Below the gums are the roots. From outside to inside, the root is cementum and dentin, respectively. At the innermost part of the entire tooth there is a cavity called the pulp cavity. The pulp cavity contains blood vessels, nerves, lymph and other accessory tissues.

Normally, enamel and dentin protect the nerves of the tooth. They help the nerves of the teeth resist various external stimuli. However, when the enamel and dentin are damaged by abrasion, chipping, cracking, caries and allergies, the nerves of the teeth are forced to be exposed. At this time, when you drink cold drinks or eat ice cream, the tooth nerve will be stimulated and feel sore. 

In addition, there are some people will feel their tooth is sore when they eat or drink some cold things after they had teeth cleanings. However, these symptoms usually resolve on their own within a short period of time. 

After the diagnosis of the cause by a dentist, the appropriate treatment plan is selected according to the cause. In addition to the dentist's treatment, patients should also do the following in their daily life:

1. Try to avoid foods that are too cold, too hot, too sweet, too sour, and too hard.
2. Use a soft-bristled toothbrush and brush with warm water.
3. When brushing your teeth, you should not brush too hard.

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How should anticoagulants and thrombolytics be used in patients with pulmonary embolism❓❓❓

Coronary heart disease, stroke and pulmonary embolism are the top three
causes of death in patients with cardiovascular disease. Pulmonary embolism includes pulmonary thromboembolism, air embolism, fat embolism and tumor embolism. Among them, pulmonary thromboembolism is the most common type of pulmonary embolism. Deep vein thrombosis of the lower extremities is the main cause of pulmonary thromboembolism. Pulmonary thromboembolism has a high morbidity and mortality rate. Therefore, the correct and rational use of anticoagulant and thrombolytic drugs in the treatment of pulmonary thromboembolism is very important.

Treatment of acute pulmonary thromboembolism.

Risk classification for acute pulmonary embolism.

	Hypotension or shock	Right ventricular insufficiency	Elevated cardiac biomarkers
Low risk	-	-	-
Low to moderate risk	-	Either is positive.
Moderate to high risk	-	+	+
High risk	+	+	+/-
Cardiac biomarkers: Markers of heart failure (eg, B-type Natriuretic Peptide, N-terminal pro-brain natriuretic peptide) and markers of myocardial injury (eg, cardiac troponin T, cardiac troponin I)

The treatment regimen is administered according to the risk classification.

Low risk: Anticoagulant therapy is used in low-risk patients. It is recommended for clinical observation in patients with subsegmental pulmonary embolism without proximal deep vein thrombosis of the lower extremities and in patients with a low risk of recurrent venous thromboembolism.

Low to moderate risk: Low to moderate risk patients are treated with anticoagulants.

Moderate to high risk: Patients at moderate to high risk are initially treated with anticoagulants. When the clinical symptoms of the patients worsen after treatment and there are no contraindications for thrombolytic drugs, the patients can be treated with thrombolytic drugs.

High risk: Treat high-risk patients with thrombolytic drugs. If the patient has contraindications to thrombolytic drugs, the patient should be treated with surgery or interventional therapy.

Thrombolytic therapy.

Commonly used thrombolytic drugs are alteplase, streptokinase and urokinase. Their thrombolytic effects are similar, and they are selected according to the clinical situation of the patient.

• Alteplase 50 mg is given by continuous intravenous infusion for 2 hours.
• Recombinant streptokinase 1.5 million U is given by continuous intravenous infusion for 2 hours.
• Urokinase 20,000 U/kg is given by continuous intravenous infusion for 2 hours.

Thrombolytic drugs activate plasminogen, which is converted into plasmin. Fibrin is hydrolyzed by plasmin and leads to thrombolysis. Thrombolytics are most effective when started within 48 hours and they can dissolve some or all of the thrombus rapidly. The treatment period is generally within 14 days.

Anticoagulation therapy.

Anticoagulant drugs can promote the action of the fibrinolytic mechanism to dissolve the formed thrombus. They are also effective in preventing the recurrence of embolism and the re-formation of thrombus. There are three recommended anticoagulation regimens for the treatment of pulmonary thromboembolism. Anticoagulation therapy should take at least 3 months.

Monotherapy: The following regimens may be considered for most patients with low to moderate risk pulmonary embolism.

• The loading dose of rivaroxaban was 15 mg twice daily for 21 days, then changed to 20 mg once daily.

• Or a loading dose of 10 mg apixaban twice a day for 7 days, then changed to 5 mg twice a day.

Sequential therapy: Patients are initially treated with a parenteral anticoagulant such as heparin. Because warfarin has a slower onset of action, overlap warfarin within 24 hours of initial treatment to adjust INR values within 2.0 to 3.0. After reaching the INR target, heparin was discontinued.

Sequential therapy: Patients are initially treated with a parenteral anticoagulant such as heparin for 5 to 14 days, and then switched to edoxaban or dabigatran.

Commonly used parenteral anticoagulant drugs are low molecular weight heparin, unfractionated heparin and fondaparinux. Unfractionated heparin is recommended for severely obese patients and with severe renal impairment (creatinine clearance <30ml/min). Unfractionated heparin has the highest risk of inducing thrombocytopenia, followed by low molecular weight heparin. Fondaparinux has the lowest risk of induction. If the platelet count decreases by more than 50% of the baseline value, heparin anticoagulants should be discontinued and non-heparin anticoagulants such as bivalirudin and argatroban should be used instead. 

Warfarin: Its anticoagulant effect is mainly by inhibiting the synthesis of new coagulation factor Xa. Because it has no effect on the already synthesized clotting factors, its onset will be slower.

Edoxaban, Apixaban and Rivaroxaban: Its anticoagulant effect is mainly by inhibiting the activity of coagulation factor Xa thereby reducing the synthesis of thrombin.

Dabigatran: Its anticoagulant effect works by directly inhibiting the activity of thrombin.

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Important points about the use of azithromycin.📜📜📜

Azithromycin is a macrolide antibiotic. The structure of these antibiotics has a giant ring lactone and has one or more deoxysugar linkages. They can be used as replacement drugs in patients allergic to β-lactam antibiotics. Azithromycin has many clinical advantages. There is no need for a skin test before using it. It has a broad antibacterial spectrum. Under normal circumstances, patients only need to take it once a day, which can improve patient compliance. Therefore, it is a very commonly used oral antibiotic. The following will explain how to properly use azithromycin.

Pharmacological effects.

Azithromycin irreversibly binds to the 23SrRNA of the 50S ribosomal subunit of susceptible bacteria, thereby inhibiting the transfer step of bacterial protein synthesis and preventing the assembly of the 50S ribosomal subunit. 

Dosage form and usage.

Azithromycin is clinically available in different dosage forms, but their potency is not necessarily the same. They need to pass the consistency evaluation to be considered equal.

• Tablets ≠ dispersible tablets ≠ enteric-coated tablets. Capsule ≠ soft capsule ≠ enteric-coated capsule.

Different dosage forms are used differently. 

For azithromycin tablets, take orally once daily and swallow the tablet whole. It can be taken with or without food.

For azithromycin capsules, take orally once daily and swallow the tablet whole. It should be taken at least one hour before meal or at least two hours after meal. 

Azithromycin dispersible tablets, enteric-coated tablets or soft capsules are generally taken at least one hour before meal or at least two hours after meal. The actual situation is based on the drug instruction.

The half-life of azithromycin is 68 hours, which is relatively long. Patients stop taking it after 3 days and it will still work in the body for 3 to 4 days. Therefore, mild and moderate infection patients take 500mg once a day for three days, with a total dose of 1500mg. 

Is azithromycin preferred for mycoplasma pneumonia?

In the past, azithromycin was the first choice for mycoplasma pneumonia. However, with the increasing rates of resistance to erythromycin and azithromycin in mycoplasma isolated from adult patients with community-acquired pneumonia. Although these mycoplasmas have increased resistance to macrolides, they remain susceptible to quinolones, doxycycline, or minocycline. When a patient is suspected of having mycoplasma pneumonia, antibiotics are selected according to his age: 

• When the patient is less than 8 years old, azithromycin is the first choice for him.
• When the patient is 8 years or older, azithromycin is preferred for him. Alternatively, doxycycline or minocycline may be used on him.
• When the patient is 18 years or older, doxycycline and minocycline are preferred. In addition, quinolone antibiotics such as moxifloxacin can also be considered for him.

Off-label medication.

In addition to its broad antibacterial effects, azithromycin has many other effects including disruption of biofilms, changes in macrophage phenotype, modulation of the immune system, and regulation of airway surface liquid electrolytes and mucus. Therefore, azithromycin will be used off-label.

1. Prevention and treatment of bronchial asthma: Asthma patients have persistent symptoms despite the use of combined treatment with moderate or high doses of inhaled corticosteroids and long-acting β₂ agonists. Addition of azithromycin can reduce acute asthma attack and improve quality of life in patients. Patients received oral azithromycin 250 to 500 mg three times a week for 26 to 48 weeks.
2. Treatment of adult bronchiectasis: For patients with acute exacerbations of bronchiectasis greater than or equal to 3 times per year, it is recommended that patients receive oral low-dose azithromycin for at least 3 months. The initial therapeutic dose is 250 mg orally, 3 times a week to once a day. Adjust the dose or discontinue the drug according to clinical efficacy and adverse reactions.
3. Treatment of chronic obstructive pulmonary disease: Consider adding azithromycin to patients who still experience acute exacerbations on combination therapy with inhaled corticosteroids, long-acting β₂ agonists and long-acting muscarinic antagonists, especially those with a history of smoking. Studies have shown that cigarette-induced lung inflammation and emphysema in mice can be alleviated by low-dose azithromycin.

Precautions for medication.

The capsule form of azithromycin should not be taken with food.

Azithromycin promotes gastrointestinal motility and may cause dysbiosis in the gastrointestinal tract. Therefore, patients who develop bloody or watery stools during medication or for 2 months or longer after medication should go to see a doctor as soon as possible.

Azithromycin prolongs the QT interval. Patients should go to see a doctor as soon as possible if they experience cardiac discomfort during or after taking azithromycin.

Azithromycin is hepatotoxic and ototoxic. If the patient develops related symptoms, the drug should be discontinued immediately.

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Common complications induced by diabetes.😰😰😰

Diabetes is a chronic metabolic disease. Diabetes can easily lead to other disorders. Most patients with diabetes generally have other unhealthy conditions or diseases, not just diabetes. Diabetes can also exacerbate these unhealthy conditions or diseases. Complications that diabetes can easily induce are pointed out below.

1. Eye disease.

Diabetes is a risk factor for many eye diseases.

Cataracts: Cataracts are closely related to age. It is one of the leading causes of blindness in the elderly. Apart from age-related, diabetes is also a risk factor for cataracts.

Glaucoma: People with diabetes are more likely to have glaucoma than people without diabetes.

Dry Eye: It is a very common eye disease. People with diabetes are also more likely to suffer from dry eye syndrome. Diabetes is a significant risk factor for dry eye disease.

2. Oral disease.

People with diabetes are more likely to have oral disease than people without diabetes. And they have a significantly increase in disease severity and duration. Diabetes is a risk factor for periodontitis. Periodontitis is also a common complication of diabetes. The risk of periodontitis in people with diabetes is nearly three times greater than in people without diabetes.

3. Kidney disease.

One of the main causes of chronic kidney disease is kidney disease caused by diabetes. Although the research on the pathogenesis and etiology of diabetic nephropathy is not complete, it is generally believed that it is caused by many risk factors, such as age, blood pressure, obesity, genetic susceptibility, glycemic control, glomerular filtration rate. 

4. Neuropathy.

Another common chronic complication of diabetes is diabetic neuropathy. Both the central and peripheral nerves may be affected. It is a heterogeneous group of diseases with a variety of different clinical manifestations. The most common diabetic peripheral neuropathy is distal symmetrical polyneuropathy. About 75% of diabetic neuropathy is this neuropathy, and it is one of the major risk factors for diabetic foot ulcers. It is also the leading cause of falls and fractures in people with diabetes.

5. Fractures.

People with diabetes have a significantly higher fracture risk than people without diabetes. Fractures in people with diabetes are not due to calcium or vitamin D deficiency. Some studies have pointed out that in the case of long-term hyperglycemia, changes in collagen cross-linking and glycosylation products can cause changes in the microstructure of bones. It causes bone to become brittle and more prone to fractures.

6. Mental illness.

Although mental illness is not a particularly common complication of diabetes, it can also occur due to the effects of diabetes on the central nervous system and cerebrovascular. Especially in older people with diabetes, they are prone to symptoms of memory loss and diabetes may exacerbate this condition. In addition, depression is the most common symptom of mental illness.

7. Cancer.

There are many studies showing that the risk of various cancers such as gastrointestinal cancer, liver cancer, pancreatic cancer, ovarian cancer, etc. is increased in diabetic patients. Among them, the risk of pancreatic cancer, colorectal cancer, bladder cancer, endometrial cancer and breast cancer is more than twice that of the general population. In addition, studies have shown that for every 1% increase in HbA1c in diabetic patients, the risk of cancer will increase by 18%.

8. Cardiovascular and cerebrovascular disease.

People with diabetes are more likely to have atherosclerosis and it progresses more rapidly than the normal population. It can in turn cause other cardiovascular diseases such as coronary heart disease. Studies have shown that patients with type 1 diabetes significantly increase the prevalence of myocardial infarction, heart failure, coronary heart disease, and atrial fibrillation. Increasing age and duration of diabetes also increases the prevalence of lower extremity atherosclerotic disease. It increases the risk of death from cardiovascular disease in people with diabetes. Cardiac autonomic neuropathy may also occur in people with diabetes. The risk of stroke increases by 1.5 to 4 times with type 2 diabetes. One of the risk factors for stroke is diabetes. The risk of cerebrovascular disease such as ischemic stroke is highly correlated with type 2 diabetes and high levels of HbA1c.

9. Infection.

The risk of many infections, such as head and neck infections, respiratory infections, skin and soft tissue infections, gastrointestinal infections, blood infections, etc., is significantly increased with diabetes. Blood vessels and neuropathy in the distal lower extremities can lead to diabetic foot infections and ulcers in the feet of people with diabetes. Severe cases can lead to amputation and death.

10. Hepatobiliary disease.

Because people with diabetes have a higher area of visceral adipose tissue than normal people, they are more likely to develop hepatic steatosis, which can lead to liver disease. People with diabetes are also more likely to have gallstones.

11. Blood disease.

Adults with diabetes have a higher risk of anemia. It is related to the patient's gender, disease course and comorbidities. Women have a higher risk of anemia than men. Patients with longer disease duration and comorbidities are also more likely to develop anemia.

12. Others.

Diabetes increases or worsens the risk of many diseases such as thyroid disease, dementia, and electrolyte disturbances. Clinical treatment should also pay attention to these problems.

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How to choose which glucocorticoid to use?😵😵😵

There are many clinical situations where glucocorticoids are needed. But
which one should be used among so many glucocorticoids? How should glucocorticoids be interchanged?

Effect period of glucocorticoids.

Glucocorticoids can be divided into short-acting, medium-acting and long-acting according to their effect period.

1. Short-acting glucocorticoids: Commonly used are cortisone and hydrocortisone. They are natural and endogenous hormones. They have a short duration of action and weak anti-inflammatory effects. Therefore, they should not be used to treat rheumatism. It is generally used for replacement therapy of adrenal insufficiency.
2. Medium-acting glucocorticoids: Commonly used intermediate-acting glucocorticoids are prednisone, prednisolone, triamcinolone, and methylprednisolone. They are often used to treat rheumatism.
3. Long-acting glucocorticoids: Commonly used long-acting hormones are betamethasone and dexamethasone. They are long-acting and have strong anti-inflammatory properties. However, they significantly inhibit the hypothalamic-pituitary-adrenal axis and should not be used long-term. They should only be used as a temporary medication such as for treating allergies. Intermediate-acting and long-acting glucocorticoids are both exogenous and synthetic hormones.

Efficacy of different dosage forms of glucocorticoids.

Oral corticosteroids:

Equivalent dose: 

25mg cortisone = 20mg hydrocortisone = 5mg prednisone = 5mg prednisolone = 4mg triamcinolone = 4mg methylprednisolone = 0.6mg betamethasone = 0.75 dexamethasone.

Anti-inflammatory potency: 

• Cortisone = 0.8
• Hydrocortisone = 1
• Prednisone = 3.5 to 4
• Prednisolone = 4
• Triamcinolone = 5
• Methylprednisolone = 5
• Betamethasone = 25 to 35
• Dexamethasone = 30

Potency of mineralocorticoids:

• Cortisone = 0.8
• Hydrocortisone = 1
• Prednisone = 0.8
• Prednisolone = 0.8
• Triamcinolone = 0
• Methylprednisolone = 0.5
• Betamethasone = 0
• Dexamethasone = 0

Duration of action:

• Short-acting glucocorticoids: 8 to 12 hours.
• Medium-acting glucocorticoids: 12 to 36 hours.
• Long-acting glucocorticoids: 36 to 54 hours.

Inhaled corticosteroids:

Drug	Low dose(μg)	Medium dose(μg)	High dose(μg)
Beclomethasone dipropionate	200 – 500	500 – 1000	1000 - 2000
Budesonide	200 – 400	400 – 800	800 – 1600
Fluticasone propionate	100 – 250	250 - 500	500 - 1000
Ciclesonide	80 – 160	160 – 320	320 - 1280

Equivalent dose: 

1000μg Beclomethasone dipropionate = 800μg Budesonide = 500μg Fluticasone propionate.

Topical corticosteroids:

Topical corticosteroids are frequently used in dermatology.

Weak glucocorticoids: 1% hydrocortisone acetate, 0.25% methylprednisolone.

Moderate glucocorticoids: 0.5% prednisolone acetate, 0.05% dexamethasone acetate, 0.05% clobetasone butyrate, 0.025%-0.1% triamcinolone acetonide, 1% hydrocortisone butyrate, 0.025% fludrocortisone acetate , 0.01% fluocinolone.

Potent glucocorticoids: 0.025% beclomethasone propionate, 0.1% mometasone furoate, 0.025% fluocinolone, 0.025% cloflusolone, 0.05% betamethasone valerate.

Super potent glucocorticoids: 0.02%-0.05% clobetasol propionate, 0.1% cloflubutasone, 0.1% betamethasone valerate, 0.05% halometasone, 0.05% diacetate difluorosone.

Therapeutic use.

1. Alternative therapy for primary adrenal insufficiency: Adrenal insufficiency causes Addison disease. Hydrocortisone is effective in improving cortisol deficiency. Deficiencies in insufficient cortisol can lead to death.
2. Alternative treatment for secondary adrenal insufficiency: Deficiency of adrenocorticotropic hormone synthesized by the pituitary gland or corticotropin-releasing hormone synthesized by the hypothalamus can cause this disorder. It can be treated with hydrocortisone.
3. Diagnosis of Cushing syndrome: Excessive release of adrenocorticotropic hormone from the pituitary gland or tumor of the adrenal gland. This can cause too much cortisol and cause Cushing syndrome. In addition, long-term use of high-dose glucocorticoids can also cause iatrogenic Cushing syndrome. The release of cortisol is suppressed with dexamethasone under normal conditions, but not in patients with Cushing syndrome. Therefore, a test for the inhibition of cortisol by dexamethasone can be used to diagnose Cushing syndrome.
4. Alternative Treatment for Congenital Adrenal Hyperplasia: It is a group of disorders caused by a deficiency in one or more of the enzymes that synthesize adrenal steroids. It causes the body to overproduce adrenaline androgen. Adrenocorticotropic hormone and corticotropin-releasing hormone release can be suppressed with adequate corticosteroids, thereby maintaining normal hormone levels in the body.
5. Relieve inflammatory symptoms: Glucocorticoids can significantly reduce inflammation-related symptoms such as redness, swelling, heat, and pain in inflamed areas of rheumatoid arthritis or the skin. It can be used to treat asthma attacks and control persistent asthma symptoms. It is also used to treat inflammatory bowel disease. In addition, for some non-inflammatory diseases such as osteoarthritis, it can be administered intra-articularly to treat the onset of osteoarthritis.
6. Treating Allergic Reactions: Glucocorticoids are used to treat a variety of allergic reactions such as drug-induced allergy and allergic rhinitis. In addition, when used for allergic rhinitis and asthma, topical administration is generally used to reduce the occurrence of systemic adverse reactions.
7. Promoting fetal lung maturation: Premature infants may develop respiratory distress syndrome. Fetal lung maturation is regulated by fetal cortisol. Inject dexamethasone or betamethasone subcutaneously to the mother within 48 hours before delivery. It promotes fetal lung maturation.

Glucocorticoids have a wide range of clinical uses, and they are also used to treat other diseases such as cancer.

Side effect.

Although glucocorticoids are widely used and effective, their side effects are numerous and related to the timing and dosage of use. Side effects of long-term use of glucocorticoids include osteoporosis, increased appetite, hypertension, glaucoma, increased risk of infection, mood disorders, peripheral edema, central obesity, increased risk of diabetes, and hypokalemia.

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How to tell the difference between the common cold and the flu.💫💫💫

Winter is flu season. During this season, many patients with cold symptoms think they have the flu. Patients diagnosed with the common cold after examination may even worry that the examination was not careful enough. They will question the doctor's examination. So what is the difference between the common cold and the flu?

Etiological differences.

Common cold:

The common cold can be caused by different pathogens. They include
coronavirus, respiratory syncytial virus, ECHO virus, adenovirus, rhinovirus, influenza virus, and parainfluenza virus, among others. Common colds in children are caused by respiratory syncytial virus and parainfluenza. Adult colds are mainly caused by rhinoviruses.

Flu: 

Influenza is caused by the influenza virus. It is a single-stranded, negative-stranded, segmented RNA virus. It belongs to the Orthomyxoviridae family. Influenza viruses are classified into four types: A, B, C, and D according to their matrix proteins and nucleoproteins. The main causes of influenza in humans are types A and B. There are many glycoprotein protrusions such as hemagglutinin (H) and neuraminidase (N) on the outer membrane of the virus. Influenza A viruses are named according to the difference between these two glycoproteins, such as H1N1, H2N2, H5N1, etc. Influenza B is divided into two strains, Victoria and Yamagata. 

Epidemiology of the common cold and flu.

Common cold:

The common cold is less contagious and not classified as an infectious disease. It is mainly infected by inhaling infected droplets or touching infected secretions and then touching the nose. The population is generally susceptible. Severely ill patients are rare. It can happen all year round and has no apparent seasonality.

Flu:

Influenza is highly contagious and spreads quickly. Influenza viruses are mainly spread by droplets from sick and latently infected persons. It is also spread by aerosols in crowded and poorly ventilated spaces. The population is generally susceptible. The following groups of people are more likely to develop severe disease after infection:

1. Children under 5 years old. In addition, children younger than 2 years are more likely to develop serious complications.
2. Seniors 65 and older.
3. Patients with cardiovascular disease (except hypertension), chronic respiratory disease, liver disease, kidney disease, blood system disease, endocrine system disease, nervous system disease, immunosuppressed, cancer, etc.
4. Obesity: BMI>30.
5. Pregnancy and perinatal women.

Influenza mostly occurs in summer and winter. It is generally seasonal.

Clinical manifestations.

Common cold:

The common cold has a shorter incubation period and a more acute onset. Common symptoms are nasal congestion, sneezing, coughing, sore throat and chest discomfort. Fever, headache and other complications are rare. Symptoms of generalized pain and fatigue are mild. In the absence of complications, it usually takes 5 to 7 days to heal.

Flu:

The incubation period of influenza is generally 1 to 7 days, and most is 2 to 4 days. The patient's body temperature can reach 39 to 40 degrees. It can be accompanied by chills, marked headache, and generalized pain is common and severe. The flu is sometimes accompanied by nasal congestion, sneezing, sore throat, mild to moderate chest discomfort and coughing. The most common complication of influenza is pneumonia. Others include heart and nervous system damage, myositis, rhabdomyolysis, shock, etc. Laryngitis, otitis media, and bronchitis are more common in children with influenza than in adults. In uncomplicated patients, systemic symptoms generally improve 3 to 5 days after onset, but physical recovery and cough usually take longer. 

Treatment.

Common cold:

There are no effective antiviral drugs for the common cold. Generally, decongestants, antihistamines, expectorants, antitussives, antipyretic analgesics, etc. are used for symptomatic treatment. Isolation and hospitalization are generally not required.

Flu:

Common anti-influenza virus drugs for influenza include M2 ion channel blockers (such as Amantadine), neuraminidase inhibitors (such as Zanamivir, Oseltamivir), and hemagglutinin inhibitors (such as Arbidol). Fever patients can undergo physical cooling and take antipyretics. Sputum expectorants and antitussives may be prescribed for patients with severe sputum and cough. Symptomatic treatment according to the patient's condition. If the patient's symptoms are severe or the underlying disease is significantly aggravated, the patient needs to be hospitalized. Both clinically diagnosed and confirmed patients should be treated in isolation.

Prevention.

Good personal hygiene is an important measure to prevent all respiratory infections such as frequent hand washing, keeping the environment clean and well ventilated, wearing a mask, etc.

Common cold:

There is no need for drug prophylaxis and no specific vaccine for the common cold. The best way to prevent it is to practice good personal hygiene.

Flu:

The best way to prevent the flu is to get the flu shot. Key groups such as healthcare workers, patients with chronic diseases, pregnant women, the elderly over 60 years old, children 6 months to 5 years old, and those who need to take care of children less than 6 months old should be vaccinated annually. Post-exposure drug prophylaxis is available for close contacts who have not been vaccinated or have not yet acquired immunity after vaccination and who are at high risk for severe influenza. It recommends taking oseltamivir or zanamivir once daily for 7 days within 48 hours of exposure.

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Some commonly used medical terminology explained.📝📝📝

There are many professional terms in clinical medicine. Some professional terms look similar, but they mean different things. Misunderstanding these terms when taking medication may reduce the efficacy and even cause unnecessary side effects. This article will explain some common medical terms.

Dosages and maximal dose.

Dosage is the amount of a drug that is effective in treating a disease. The dosage is related to the different indications, the severity of the disease, and the patient itself. The dosage of the drug needs to be adjusted according to the above points.

Maximal dose is the maximum therapeutic dose of the drug. If the dose is over than maximal dose, it can become poison and produce toxic side effects. In addition, maximal dose does not necessarily refer to a single dose. It will also have a daily maximum dose and other conditions.

The clear meaning of before meal, during meal, after meal and on an empty stomach.

Before meal means taking the drug 0.5 to 1 hour before the meal. It can be to reduce food-drug interactions, to make the drug more effective, or to reduce the incidence of adverse reactions.

During meal means taking the drug immediately before the meal or during the meal. It is mainly for the drug to work better.

After meal means taking the drug 0 to 0.5 hour after the meal. It can be to reduce the irritation of the drug to the gastrointestinal tract or to increase the absorption of the drug.

On an empty stomach means fasting for 10 hours before taking the medicine. It is mainly to avoid the effect of food on the drug.

The difference between taking it every 8 hours and taking it three times a day.

Dosing every few hours is because some medicines need to be taken at precise intervals in order to be effective. Therefore, patients need to take the drug every 8 hours, 12 hours, 24 hours or other.

Medications that are taken several times a day are less precise about the time interval between dosing. Medication is usually taken according to the patient's meal time.

Contraindication.

Contraindications mean that the drug cannot be used with these symptoms. Otherwise, some serious adverse reactions may occur or are very likely, and even certain adverse reactions will occur. Take NSAIDs as an example:

• Ibuprofen: Its contraindication is in patients with active peptic ulcer. In these patients, the use of ibuprofen will definitely worsen the gastrointestinal ulcers and the adverse reactions of gastric bleeding are likely to occur.
• Etoricoxib: It is contraindicated in patients diagnosed with ischemic heart disease or cerebrovascular disease. Etoricoxib may induce serious adverse reactions (cardiovascular and cerebrovascular events) in patients.

Use with caution.

Use with caution means use under conditions. For example, aminoglycoside antibiotics are generally avoided in children younger than 6 years of age because of clear ototoxicity and nephrotoxicity. However, aminoglycoside antibiotics can be used in children in the following situations.

• Aminoglycoside antibiotics can be used when other less toxic antibiotics cannot be used and the child has a clear clinical indication for use.
• Adverse reactions should be closely monitored during treatment. When conditions permit, blood drug concentration monitoring should be implemented in patients and medication should be adjusted according to the results.

Definition of the incidence of adverse reactions.

Problems with the quality of the drug are not the cause of adverse reactions. Adverse effects are an inherent property of every drug. No matter how good the quality of the drug is, there will be adverse reactions. 

• Very rare: the incidence of adverse reactions < 0.01%.
• Rare: 0.01% ≤ the incidence of adverse reactions < 0.1%.
• Not common: 0.1% ≤ the incidence of adverse reactions < 1%.
• Common: 1% ≤ the incidence of adverse reactions < 10%.
• Very common: The incidence of adverse reactions ≥ 10%.

Statins: Common side effects are myalgia (about 1.5 to 5%) and liver damage (about 1 to 2%). Rhabdomyolysis is a rare side effect of it.

Thiazide diuretics: Raising blood uric acid levels is a very common side effect of these drugs. Therefore, it is contraindicated in patients with gout and should be avoided in patients with hyperuricemia.

Expiry date and period of use.

Expiry dates are generally marked as Exp. year/month or year/month/day. If the expiry date is only marked with the year and month, the medicine can be used until the last day of the month in that year. Such as Exp. 2022/02, the medicine can be used until 28th February 2022. If the expiry date is marked with the year, month and day, the medicine can be used until that date. Such as Exp. 2022/02/11,  the medicine can be used until 14th February 2022.

Period of use refers to the period during which the medicine can be used after the original packaging of the medicine is opened. The original packaging of ophthalmic preparations, nasal preparations, etc. is generally only used within 28 days after opening. 

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Several foods that are good for the liver.👍👍👍

The liver is an important organ of the human body. It plays an important role in human physiology and life activities. It is also one of the largest and most functional organs in the human body. The liver is the center of human metabolism and the largest organ of the digestive glands. It plays an irreplaceable role in the catabolism of sugar, fat, protein and other substances and the storage of glycogen. The liver is also an important detoxification organ in the human body. During human metabolism, blood flows from the abdominal cavity to the liver through the portal vein. Microorganisms and harmful substances contained in the blood are metabolized and detoxified in the liver into more water-soluble or non-toxic substances. These metabolites are then excreted in bile or urine. If the liver is diseased, it can lead to impaired liver function. When the liver function is damaged, the body's material metabolism will be disordered. It may cause metabolic diseases such as diabetes and hyperlipidemia. Therefore, it is important to keep the liver healthy. Eat these foods regularly to keep your liver healthy.

1. Coffee.

Studies have shown that coffee can prevent fatty liver and be beneficial to the liver. Drinking coffee every day can effectively reduce the risk of chronic hepatitis, thereby preventing liver cancer. It increases liver transaminases and antioxidant levels. This reduces fat accumulation in the liver and helps remove carcinogens.

2. Oat.

Oatmeal is one of the easiest and most convenient foods to consume dietary fiber. Dietary fiber can help the body digest food very well. Oats are also rich in β-glucan. It has high biological activity in the human body. It promotes the regulation of the immune system to fight inflammation more effectively. Studies have shown that the β-glucan in oats can reduce the amount of fat stored in the liver of mice and play a role in protecting the liver. In addition, it may also be effective in the treatment of diabetes and obesity.

3. Green tea.

Green tea has long been thought to have weight loss benefits. This effect has also been confirmed by many studies. Studies have pointed out that green tea has antioxidant effects, reduced body fat absorption and symptoms associated with non-alcoholic fatty liver disease.

4. Garlic.

Garlic gets the most attention for its anticancer abilities. However, it also has the effect of protecting the liver. In the daily diet, people should eat garlic properly.

5. Grape.

Grapes, grape juice and grape seeds have all been found to be rich in antioxidants. It protects the liver by preventing liver damage and reducing inflammation.

6. Grapefruit.

Naringin and naringenin are the two major antioxidants found in grapefruit. They can protect liver cells and reduce inflammation to prevent liver damage. They can also prevent fat from accumulating in the liver and reduce symptoms of nonalcoholic fatty liver disease.

7. Berry.

Polyphenols are found in many dark berries, such as cranberries, raspberries, and blueberries. It is also an antioxidant. Studies have shown that regular consumption of berries can boost immunity and help prevent liver damage.

8. Other fruits and vegetables that are good for the liver.

Studies have shown that these fruits and vegetables are good for the liver:

• Avocado.
• Banana.
• Ficus carica.
• Cactus fruit.
• Lemon.
• Pawpaw.
• Watermelon.
• Radish.
• Beets and beet juice.
• Broccoli.
• Kale.
• Barley.
• Brown rice.

9. Nut.

Most nuts contain a variety of antioxidants, vitamin E, and unsaturated fatty acids. These substances can reduce inflammation and help prevent non-alcoholic fatty liver disease. This has also been confirmed that nuts can protect the liver. Eating the right amount of almonds, walnuts and other nuts every day can prevent liver disease. However, nuts are high in fat and should not be eaten in excess.

10. Olive oil.

Studies have pointed out that olive oil is rich in unsaturated fatty acids. It can help reduce the occurrence of oxidative stress and improve liver function. Adding olive oil to food can prevent excess fat intake and prevent liver damage.

11. Deep sea fish.

Deep-sea fish are rich in omega-3 fatty acids. It prevents inflammation and excess fat from accumulating in the liver. It also maintains adequate levels of transaminases in the liver. Studies have shown that consuming deep-sea fish or fish oil supplements can be effective in preventing liver disease. It also recommends eating deep-sea fish no less than 2 times a week. If you don't like eating fish, you might consider taking a fish oil supplement.

In addition, you should avoid eating too many foods that are harmful to the liver:

• Starchy foods: such as bread, cakes or baked goods.
• High-fat foods: such as fried foods, fatty meat, etc.
• Sugar: Excessive sugar intake should be avoided to reduce the stress on liver metabolism.
• Salt: Avoid too much salt intake. Processed foods such as sausage and bacon should be avoided.
• Alcohol.

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Comparison between various commonly used angiotensin receptor blockers.👀

Angiotensin receptor blockers (ARBs) are commonly used blood pressure
lowering drugs. The more common among them are allisartan, azilsartan, candesartan, irbesartan, losartan, olmesartan, telmisartan, valsartan. What is the difference between them and what is their usage?

Indications.

There are five commonly used antihypertensive drugs: angiotensin-converting enzyme inhibitor (ACEI), angiotensin receptor blocker (ARB), β-blocker, calcium channel blocker (CCB) and diuretics. Although they have the effect of lowering blood pressure, they are used differently in different situations. Depending on the patient's physical condition, risk factors, and comorbidities, there will be different priorities for the selection of antihypertensive drugs.

1. For hypertensive patients with diabetes or chronic kidney disease: ACEI or ARB is the first choice drug. If patients need combination therapy, they should also be based on ACEI or ARB.
2. For patients with hypertension and myocardial infarction: patients should use ACEI or ARB combined with β-blocker.
3. For hypertensive patients with dyslipidemia or atrial fibrillation prophylaxis: ACEI or ARB is the first choice drug.
4. For patients with hypertension and heart failure: ACEI is the first drug of choice. If patients are intolerant to ACEI, ARB can be used instead. Both ACEIs and ARBs can reduce the risk of hospitalization and mortality in patients with Heart Failure with Reduced Ejection Fraction (HFrEF). They can improve the patient's exercise capacity and related symptoms. Unless patients are intolerant to or have contraindications to ACEIs, patients are recommended to use ACEIs first. For patients who cannot use ACEIs, it recommends the use of ARBs with clear evidence of benefit in HFrEF, such as candesartan, losartan, and valsartan. For patients who can tolerate ACEIs or ARBs, it recommends sacubitril/valsartan tablets instead of them. It can further reduce morbidity and mortality in patients with heart failure.

A common adverse reaction of ACEI is cough. If the patient cannot tolerate it, ARB can be used instead.

Among various ARB antihypertensive drugs, losartan is the only one that has the effect of lowering blood pressure and also lowering uric acid. Therefore, it reduces gout attacks.

Dosage.

Allisartan: Its recommended dosage is 240 mg once daily. Food can significantly reduce its absorption. Its bioavailability is reduced by 35.5%. Therefore, it is not recommended to be taken with food and should be taken on an empty stomach.

Azilsartan: Its recommended dosage is 20 to 40 mg once daily. Food does not have a significant effect on its absorption. Therefore, it can be taken with or without food.

Candesartan: Its recommended dosage is 4 to 12 mg once daily. It can be taken with or without food.

Irbesartan: Its recommended dosage is 150 to 300 mg once daily. It can be taken with or without food.

Losartan: Its recommended dosage is 50 to 100 mg once daily. It can be taken with or without food.

Olmesartan: Its recommended dosage is 20 to 40 mg once daily. It can be taken with or without food.

Telmisartan: Its recommended dosage is 40 to 80 mg once daily. Food will slightly reduce its absorption. However, it can be taken with or without food.

Valsartan: Its recommended dosage is 80 to 160 mg once daily. Food reduces its absorption by 48%. However, when it was taken with or without food, there was no significant change in its blood levels after 8 hours. Therefore, it can also be taken with or without food, but it is recommended to take it at the same time each day.

Pharmacokinetics.

Allisartan and losartan are metabolized to the active product EXP-3174 by gastrointestinal esterases and hepatic CYP2C9, respectively. The half-life of EXP-3174 is approximately 10 hours. EXP-3174 has a stronger affinity for angiotensin receptors than they do. However, some studies indicate that only a small amount of losartan can be converted into the active metabolite in a small number of people. The efficacy of losartan may be reduced in these people.

Telmisartan has the longest half-life of these drugs. Its half-life is more than 20 hours. Therefore, an occasional missed dose of telmisartan has little effect on blood pressure.

Affinity to angiotensin receptors:

• Candesartan = Olmesartan > Irbesartan > Telmisartan = Valsartan = EXP-3174 > Losartan

In addition, studies have shown that the maximum dose of azilsartan has a stronger blood pressure lowering ability than the maximum dose of olmesartan and valsartan.

Interaction.

Same points:

1. NSAIDs: In combination with NSAIDs such as etoricoxib and ibuprofen, the antihypertensive ability of ARBs decreases and increases the risk of renal impairment.
2. Diuretics: It may cause severe hypotension in combination with diuretics. If the patient is already taking a diuretic, the ARB should be started at a low dose. In addition, ARBs reduce the secretion of aldosterone. It has the side effect of causing hyperkalemia. Therefore, patients' potassium levels need to be closely monitored when co-administered with potassium-sparing diuretics such as spironolactone.
3. Lithium: The plasma concentration of lithium is increased by ARBs. It may cause lithium poisoning. They should be avoided in combination.

Difference points:

1. Losartan: Although the clinical significance is unclear, studies have shown that fluconazole and rifampicin reduce the metabolism of losartan. They may reduce the blood pressure-lowering effects of losartan. Be careful when using them together.
2. Telmisartan: Since telmisartan will increase the steady state minimal concentration of digoxin by about 20%, the plasma concentration of digoxin should be monitored when it is co-administered with digoxin.

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Some lifestyle habits may be harming your health.💫💫💫

Healthy lifestyle habits are of course good for your health. However, if some details are wrong, healthy habits may become unhealthy. In the long run, it may harm your body. Especially when the weather is cold, some comforting habits may be unhealthy habits.

Drink less or do not drink of these things.

1. Overheated drinks.

When the weather is cold in winter, many people will like to drink hot drinks, such as hot water, hot tea and hot coffee. Although hot drinks can warm your body, overheated drinks can actually be bad for your body. If a person frequently drinks overheated beverages, it can repeatedly burn the mucous membranes of the mouth and digestive tract. These mucous membranes undergo repeated processes of injury and recovery. During this process, more and more abnormal mucosal cells may be generated. It increases the risk of developing esophageal cancer. 

Studies have shown that hot drinks at 65 to 75 degrees can scald the throat and may cause esophageal cancer. The International Agency for Research on Cancer has also defined hot drinks over 65 degrees as a Category 2A carcinogen. Therefore, we should not drink beverages above 65 degrees. But we can't use a thermometer to measure the temperature every time. It is recommended that we drink a small amount of beverages first. If you don't feel hot and you can drink it directly, then the temperature is more suitable. If you feels too hot, you should let the beverage cool down a little bit before drinking it.

2. Double-boiled soup.

In Chinese society or in Asia, many people would like to eat double-boiled soup. It is known for its deliciousness and health benefits. However, you should also be careful not to eat the soup when it is too hot. And not everyone can eat double-boiled soup. Double-boiled soup takes a long time to cook for it to taste good. But the longer the soup is cooked, the higher the purine and nitrite content in the soup. Purines may increase uric acid in the body and induce gout. Nitrite has also been linked to cancer. If you eat soup for a long time or in large quantities, the kidneys may not be able to metabolize all of them, and then induce renal failure. Double-boiled soup generally has meat, and the fat content is not less. The disadvantages of fat are believed to be needless to say. 

It is generally not recommended to cook meat soup for more than 2 hours, and it is best to control it to about 1 hour. Fish soup should be within 1 hour. When you eat soup, you should also eat residual from soup, which is also very nutritious. Patients with gout, hypertension, hyperglycemia, hyperlipidemia, poor stomach and kidney function, obesity, etc. should eat less double-boiled soup.

3. Strong tea.

Some people will enjoy drinking strong tea to help remove oil and refresh themselves. But in fact, strong tea is harmful to the body. Strong tea contains a lot of tea polyphenols. It causes calcium loss in the body. It can harm bones. There is also a lot of oxalic acid in strong tea. Oxalic acid can form stones with calcium in the urinary tract, which can easily lead to kidney stones. Strong tea contains a lot of theophylline and caffeine. They stimulate the secretion of stomach acid. This can easily damage the gastric mucosa and induce gastritis and gastric ulcers. Caffeine also stimulates the nervous system. It can lead to palpitations and arrhythmia by causing increased blood flow and heart rate.

Strong tea generally refers to about 3 grams of tea leaves per 150ml of water. It is generally darker in color and more bitter in taste.

Bad sleeping habits.

Besides going to bed late, there are some bad sleep habits that are not good for your body.

1. Sleep after eating.

Some people prefer to lie down or sleep directly after eating. It can lead to proneness to acid reflux. Stomach acid is very corrosive. When it backs up into the esophagus and throat, it can harm them.

2. The blanket covers the head.

Some people like to sleep with the blanket over their heads. This could be because it's too cold or feels more safety. But doing it may affect the quality of sleep and seriously cause hypoxia. So, if the reason is too cold, you can consider adding an extra blanket. If you feel unsafety, maybe you can try to hugging something to sleep.

3. Sleep curled up.

When it's cold, some people find the bed and blanket too cold, so they curl up to sleep. You may feel stiffness and muscle aches when you wake up. Because when they slept curled up, they stayed in that position all night. The muscles will remain in a tight state, and the cold weather may make the muscles in a tighter state. 

Therefore, when the weather is too cold, you can add an extra blanket or use a heater. This can improve the quality of sleep.

Bad bathing habits.

1. The water temperature is too hot.

Some people will like to take a very hot bath in the winter. In winter, human skin can be very dry. If the water is too hot, it will flush more oil from the surface of the skin. The skin becomes overly dry, itchy and cracked. Too hot water can also increase the dilation of blood vessels near the skin. Blood will flow more to the skin. It reduces blood supply to vital organs such as the brain and heart. Patients with cardiovascular and cerebrovascular diseases are more likely to develop ischemia.

Therefore, the water temperature should not be too hot when bathing.

2. The bathroom is poorly ventilated.

If the bathroom is poorly ventilated, this can result in too little oxygen in the bathroom. If the bathing time is too long, it may cause a coma due to lack of oxygen. This kind of news comes out every year. So make sure the bathroom is well ventilated.

3. Take a shower after drinking.

Some people go to the shower immediately after drinking. They may want to take a bath to remove the smell of alcohol or to refresh themselves. However, bathing will speed up blood circulation and increase energy consumption. Glucose consumption also increases and may cause hypoglycemia. The ethanol in alcohol reduces the storage of glucose in the body. Therefore, bathing immediately after drinking alcohol increases the chance of coma.

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