Weak heart function also means that the patient has heart failure, in which case the patient can combine diuresis and vasodilation to improve heart function. Patients are advised to take 20-40 mg of furosemide, also known as tachyphylaxis, by sedation. If the degree of heart failure is not very serious, oral furosemide tablets combined with spironolactone can also be relatively very good. In addition, if necessary, sodium nitroprusside or neurontin can be pumped intravenously. If the patient has heart failure with rapid ventricular rate, especially if it is accompanied by rapid atrial fibrillation, Sidilan can also be given 0.2-0.4 mg each time to help improve the patient’s chest tightness, shortness of breath, wheezing and dyspnea. The application of the above drugs can also be combined with oxygen therapy to help further relieve the uncomfortable symptoms.