What is the best technique to evaluate LV function (global or segmental)?

What is the best technique to evaluate LV function (global or segmental)?

• A. Left ventricular angiogram
• B. Coronary angiogram
• C. Echocardiography
• D. Nuclear perfusion imaging

Answer: (A)

Assessing LV function in terms of both global performance and regional wall motion requires a modality that directly visualizes the LV cavity throughout the cardiac cycle with high fidelity. The left ventricular angiogram, done during left-heart catheterization with contrast, provides real-time cine imaging of the LV, allowing precise measurement of end-diastolic and end-systolic volumes and ejection fraction, as well as clear visualization of regional wall motion abnormalities across multiple views. Since this is performed in the cath lab, it can be interpreted alongside coronary anatomy, giving immediate, integrated information about both ventricular function and coronary disease. While echocardiography is noninvasive and excellent for LV assessment in general, the angiographic LV study offers direct, quantitative visualization of global and segmental function in the invasive setting and can be more precise for localization of regional dysfunction. Nuclear perfusion imaging can assess function but involves radiation and provides less detailed segmental information, and coronary angiography alone maps arteries without directly quantifying LV performance.

Assessing LV function in terms of both global performance and regional wall motion requires a modality that directly visualizes the LV cavity throughout the cardiac cycle with high fidelity. The left ventricular angiogram, done during left-heart catheterization with contrast, provides real-time cine imaging of the LV, allowing precise measurement of end-diastolic and end-systolic volumes and ejection fraction, as well as clear visualization of regional wall motion abnormalities across multiple views. Since this is performed in the cath lab, it can be interpreted alongside coronary anatomy, giving immediate, integrated information about both ventricular function and coronary disease. While echocardiography is noninvasive and excellent for LV assessment in general, the angiographic LV study offers direct, quantitative visualization of global and segmental function in the invasive setting and can be more precise for localization of regional dysfunction. Nuclear perfusion imaging can assess function but involves radiation and provides less detailed segmental information, and coronary angiography alone maps arteries without directly quantifying LV performance.