Chronic heart failure primarily includes left heart failure, right heart failure, and total heart failure. Left heart failure can present with varying degrees of respiratory difficulty, such as exertional dyspnea, orthopnea, and paroxysmal nocturnal dyspnea, etc. Secondly, symptoms can include coughing and expectorating, coughing up pink frothy sputum, and patients may experience fatigue, dizziness, and palpitations, among others. Right heart failure mainly manifests as gastrointestinal symptoms, such as abdominal distension, poor appetite, nausea, vomiting, etc. Total heart failure encompasses the clinical manifestations of both right and left heart failure.