Heart failure in children is a clinical condition in which the heart is unable to pump sufficient blood to meet the metabolic needs of the body. Unlike adults, where coronary artery disease is a common cause, heart failure in children usually results from congenital heart defects, cardiomyopathy, myocarditis, severe anemia, arrhythmias, or acquired heart diseases such as rheumatic heart disease. It is a serious condition that requires early diagnosis and prompt treatment to prevent complications and improve the child's quality of life. The causes of heart failure vary according to the child's age. In newborns and infants, congenital heart defects such as ventricular septal defect, patent ductus arteriosus, atrioventricular septal defect, and coarctation of the aorta are common causes. In older children, cardiomyopathies, viral myocarditis, severe hypertension,