Final answer:
Doppler evidence of cardiac tamponade from diastolic hepatic vein flow is: D. Inspiratory reversal.
Step-by-step explanation:
Doppler evidence of cardiac tamponade from diastolic hepatic vein flow is characterized by Inspiratory reversal (D). In the presence of cardiac tamponade, an increase in intrathoracic pressure during inspiration causes impaired filling of the right atrium, leading to reversed or retrograde flow in the hepatic veins during diastole.
This phenomenon occurs due to the elevated pressure in the pericardial space, restricting cardiac filling during inspiration. The reversal of hepatic vein flow during inspiration is a specific Doppler finding associated with cardiac tamponade and is an important diagnostic indicator in the evaluation of patients with suspected pericardial effusion.
Understanding Doppler findings and their significance in cardiac imaging is essential for healthcare professionals, particularly those involved in cardiology and echocardiography.
Doppler ultrasound is a non-invasive diagnostic tool that assesses blood flow and provides valuable information about cardiac function and hemodynamics. Inspiratory reversal in diastolic hepatic vein flow is a key Doppler feature that aids in the timely diagnosis of cardiac tamponade, allowing for prompt intervention and management of this critical condition.