Increased levels of cardiac natriuretic peptide are indicative of cardiac insufficiency and heart failure. Cardiac natriuretic peptide, also known as atrial natriuretic peptide, is a substance synthesized by the atria and ventricles of the human body to conserve potassium and excrete sodium, and it can well antagonize the renin-angiotensin-aldosterone system as well as the sympathetic-adrenal system. Increased levels of atrial natriuretic peptide are usually indicative of cardiac insufficiency and heart failure due to prolonged heart damage. Increased levels of cardiac natriuretic peptide can be protected by the use of medications such as the diuretic furosemide, the beta-blocker propranolol, the calcium channel blocker nifedipine extended-release tablets, the angiotensinogen-converting enzyme inhibitor enalapril, and the angiotensin II receptor antagonist chlorthalidomide. Abnormal atrial natriuretic peptide index, can go to the cardiovascular medicine department to consult the consultation.