When discharged from the hospital, generally according to the child’s situation to bring some cardiac, diuretic, potassium, vasodilator, antibiotics, cough and phlegm, antipyretic drugs, etc.. 1.Anti-fever medicine is generally used for body temperature >38.5℃, and pay attention to increase water intake appropriately after fever and taking anti-fever medicine. 2.When the child has phlegm, in addition to taking phlegmolytic drugs, the child should be encouraged to cough and expel phlegm by himself. Parents can pat the back to help the child expel phlegm (especially for small infants, note that the hand is bent and hollow when patting the back, and pat rhythmically from the child’s back from bottom to top, and the hand should have certain strength), and if necessary, separate the middle and index fingers and press the trachea several times to force the child to cough up phlegm, which helps to expel phlegm. 3, antibiotic drugs, take 3-5 days according to the situation after discharge, more to take easy to grow thrush (available 2.5% sodium bicarbonate coated oral cavity, mycobacterium tablets finely mixed paste coated oral cavity) or mouth ulcers (can take vitamin C, B2, local spray watermelon cream). 4, diuretics: dihydrocoumarol, tachyphylaxis, butylamine, aminoglutethimide. Take them as prescribed by the doctor and pay attention to the urine volume. Decide to increase or decrease the amount according to the heart function. Do not stop the drug suddenly. When stopping the drug, you can choose to reduce the dose – every other day – every 2nd day – every 3rd day – stop. After stopping diuretics, you should ask your doctor to review regularly to avoid cardiac insufficiency. It can be taken for 3-6 months, or even longer. When taking diuretics for a long time, care should be taken to review blood electrolytes regularly. If parents have any questions about the above precautions, please feel free to contact me via telephone consultation. 5. Potassium supplement: 10% potassium citrate (local potassium chloride is also available). Take it as prescribed by the doctor, not more. After taking tachyphylaxis, if there is poor appetite, nausea and vomiting, pay attention to low blood potassium, go to local hospital for emergency blood electrolyte check to correct electrolyte disorder (if necessary, ultrasound to check whether there is pericardial effusion). Vasoactive drugs: Kepone (Captopril). Please pay attention to the presence of dizziness and hypotension, and reduce or stop the dosage if necessary.