How is regurgitation determined?

How is regurgitation determined?

• A. Aortography and Ventriculography
• B. Echocardiography Only
• C. MRI
• D. CT Angiography

Answer: (A)

Regurgitation is determined most directly by visualizing the backflow across a valve during the catheterization procedure. This is done with angiography. - Aortography helps identify aortic regurgitation: when contrast is injected into the aorta, if enough regurgitation is present, contrast runs back into the left ventricle during diastole. The diastolic runoff and the size of the retrograde jet give a sense of severity. - Ventriculography helps identify mitral regurgitation: injecting contrast into the left ventricle shows a jet of contrast moving back into the left atrium during systole. The width and persistence of that jet correlate with how severe the MR is. These invasive imaging views provide real-time, direct evidence of regurgitation during the procedure, which is why they are the primary method used in the cath lab. Noninvasive modalities like echocardiography are excellent for initial evaluation, but during catheterization, angiographic visualization remains the standard for confirming regurgitation. MRI and CT can quantify regurgitation in some contexts, but they are not used for intra-procedural assessment.

Regurgitation is determined most directly by visualizing the backflow across a valve during the catheterization procedure. This is done with angiography.

• Aortography helps identify aortic regurgitation: when contrast is injected into the aorta, if enough regurgitation is present, contrast runs back into the left ventricle during diastole. The diastolic runoff and the size of the retrograde jet give a sense of severity.

• Ventriculography helps identify mitral regurgitation: injecting contrast into the left ventricle shows a jet of contrast moving back into the left atrium during systole. The width and persistence of that jet correlate with how severe the MR is.

These invasive imaging views provide real-time, direct evidence of regurgitation during the procedure, which is why they are the primary method used in the cath lab. Noninvasive modalities like echocardiography are excellent for initial evaluation, but during catheterization, angiographic visualization remains the standard for confirming regurgitation. MRI and CT can quantify regurgitation in some contexts, but they are not used for intra-procedural assessment.