Standard drugs for heart failure?

① Diuretics: It is the only drug that can control fluid retention and treat heart failure, and can improve clinical symptoms faster than other drugs for heart failure. Proper use of diuretics is one of the key factors for the success of other heart failure drugs. ② Angiotensin converting enzyme inhibitor: This drug is the cornerstone of drugs for treating heart failure, and it is an essential drug for standard treatment of heart failure. By inhibiting RAS, increasing bradykinin level, relaxing blood vessels and inhibiting ventricular remodeling, it plays a role in treating heart failure; ③ Beta blockers: Because this drug can block SNS and inhibit the activation of RAS, long-term administration can improve the prognosis and reduce the mortality of chronic stable heart failure; ④ digitalis preparation: the drug has positive inotropic effect, negative frequency and negative conduction. Although the treatment of heart failure has a history of more than 200 years in clinic, it is still the main drug to treat heart failure.