Which congenital heart defects can present with signs of congestive heart failure and a murmur?

• A. Aortic stenosis, Coarctation of Aorta, PDA
• B. Ventricular septal defect, Pulmonary stenosis, Atrial septal defect
• C. Transposition of great vessels, Tetralogy of Fallot, Mitral valve prolapse
• D. Tricuspid atresia, Total anomalous pulmonary venous return, Coronary artery fistula

Answer: (A)

The correct answer is the group that includes aortic stenosis, coarctation of the aorta, and patent ductus arteriosus (PDA). Each of these congenital heart defects can lead to congestive heart failure (CHF) and produce characteristic heart murmurs.

Aortic stenosis leads to an obstruction of blood flow from the left ventricle to the aorta, causing the heart to work harder. This increased workload can ultimately result in CHF, and the stenosis typically leads to a specific systolic ejection murmur that can be detected upon auscultation.

Coarctation of the aorta involves a narrowing of the aorta, which can lead to increased blood pressure and volume overload in the left ventricle, potentially causing symptoms of CHF. The murmur associated with this condition can involve the left side of the heart and may vary in intensity depending on the specific site of the coarctation.

Patent ductus arteriosus allows blood to shunt from the aorta back to the pulmonary artery, which can contribute to volume overload in the lungs and further exacerbate the risk of developing CHF. The characteristic continuous "machine-like" murmur produced by the PDA is a key diagnostic feature.

Understanding these