Question

Which of the following describes the normal flow pattern in the hepatic vein?

A) Biphasic

B) Triphasic

C) Monophasic

D) Continuous

E) It's normal to see any of the above waveforms in the hepatic veins

Answer 1

The normal flow pattern in the hepatic vein is triphasic, reflecting blood flow properties, and is influenced by cardiac cycle-related pressures.

Step-by-step explanation:

The normal flow pattern in the hepatic vein is described as triphasic. This specific flow pattern reflects the blood flow characteristics within the vein, the influence of blood pressure within the system, and the return of blood to the heart. In the liver, the hepatic portal vein and the hepatic arteries supply blood to the sinusoids, and this processed blood exits via the hepatic veins. The triphasic waveform indicates the various pressures during the cardiac cycle that influence the velocity and direction of blood flow, including the atrial contraction, ventricular systole, and ventricular diastole.