Cardiac catheterization in a child with a ventricular septal defect serves which purpose?

Cardiac catheterization in a child with a ventricular septal defect serves which purpose?

• A. Identifies the specific location of the defect
• B. Confirms the presence of a pansystolic murmur
• C. Reveals the degree of cardiomegaly that is present
• D. Establishes the presence of ventricular hypertrophy

Answer: (B)

Cardiac catheterization in a child with a ventricular septal defect is used to map the heart’s anatomy and obtain hemodynamic data. By injecting contrast and measuring pressures and oxygen saturations in different chambers, clinicians can pinpoint exactly where the defect is, assess the size of the left-to-right shunt, and evaluate the impact on pulmonary pressures and resistance. This information is crucial for planning treatment, such as surgical repair or device closure. Murmurs are auscultatory findings detected with a stethoscope, not something that catheterization confirms. Cardiomegaly and ventricular hypertrophy are best assessed with imaging modalities like chest radiographs, echocardiography, or MRI, rather than catheterization alone.

Cardiac catheterization in a child with a ventricular septal defect is used to map the heart’s anatomy and obtain hemodynamic data. By injecting contrast and measuring pressures and oxygen saturations in different chambers, clinicians can pinpoint exactly where the defect is, assess the size of the left-to-right shunt, and evaluate the impact on pulmonary pressures and resistance. This information is crucial for planning treatment, such as surgical repair or device closure.

Murmurs are auscultatory findings detected with a stethoscope, not something that catheterization confirms. Cardiomegaly and ventricular hypertrophy are best assessed with imaging modalities like chest radiographs, echocardiography, or MRI, rather than catheterization alone.