Heart failure primarily includes left heart failure, right heart failure, and total heart failure. Patients should visit the cardiology outpatient clinic. Left heart failure mainly manifests as pulmonary congestion, which can cause varying degrees of breathing difficulty, coughing, expectoration of pink frothy sputum, palpitations, and fatigue. Right heart failure primarily appears as liver congestion and other symptoms related to the digestive system, such as nausea, vomiting, and gastrointestinal discomfort. Total heart failure includes symptoms of both left heart failure and right heart failure, and medical attention should be sought promptly after the onset of heart failure.