An infant with trisomy 21 and a large ventricular septal defect requires monitoring. Which actions are prioritized for detecting potential heart failure?

• A. Call for a chest x-ray and perform electrocardiogram; monitor caloric intake and weight
• B. Initiate diuretic therapy and monitor urine output
• C. Schedule an echocardiogram and monitor respiratory rate
• D. Begin chest physiotherapy and monitor blood pressure

Answer: (A)

In infants with a large VSD, the priority is to detect early signs of heart failure by combining structural assessment with how the baby is growing and feeding. A chest x-ray helps reveal heart size and pulmonary congestion, while an electrocardiogram checks for rhythm or conduction issues that could worsen cardiac function. Pairing that imaging with close monitoring of caloric intake and weight shows how well the infant is feeding and growing despite the increased work of the heart—lack of weight gain or poor intake can be early indicators of heart failure. This approach gives both the anatomical picture and the functional impact, which is essential for timely detection and intervention.

Diuretic therapy is a treatment, not a monitoring action. An echocardiogram is important for diagnosing and assessing heart structure and function, but ongoing monitoring for heart failure relies more on feeding and growth status in addition to imaging. Monitoring respiratory rate alone or including chest physiotherapy and blood pressure are less directly tied to detecting early heart-failure warning signs in this context.