What is Hepatofugal blood flow?
Hepatofugal flow (ie, flow directed away from the liver) is abnormal in any segment of the portal venous system and is more common than previously believed. Hepatofugal flow can be demonstrated at angiography, Doppler ultrasonography (US), magnetic resonance imaging, and computed tomography (CT).
What does Hepatofugal mean?
The term “hepatopetal” is used to describe a blood flow that is directed towards the liver whereas the term “hepatofugal” means that the blood flow is directed away from the liver.
What is Hepatopetal flow in liver?
Hepatopetal denotes flow of blood towards the liver, which is the normal direction of blood flow through the portal vein. The term is typically used when discussing the portal vein or recanalized vein of the ligamentum teres in patients with suspected portal hypertension. It is the opposite of hepatofugal.
What is difference between portal vein and hepatic vein?
What is the difference between the hepatic portal vein and the hepatic vein? The hepatic portal vein carries nutrient-rich blood from the intestine and other parts such as the gallbladder, pancreas and spleen to the liver, whereas the hepatic vein carries deoxygenated blood from the liver to the vena cava.
What does portal venous flow is antegrade mean?
The term antegrade refers to flow in the forward direction with respect to its expected direction in the circulatory system. For example, antegrade flow moves away from the heart in the systemic arteries and toward the heart in the systemic veins.
What is the normal flow in portal vein?
The portal vein normally exhibits a monophasic, low-velocity Doppler signal, with slight respiratory variation. The normal range of flow velocity is wide but is usually between 20 and 40 cm/sec.
What is portal vein flow?
The portal vein (PV) is the main vessel of the PVS, resulting from the confluence of the splenic and superior mesenteric veins, and drains directly into the liver, contributing to approximately 75% of its blood flow [1]. Hepatic artery provides the remaining hepatic blood flow.
What is portal blood flow?
The portal vein supplies approximately 75 percent of blood flow to the liver. The portal vein is not a true vein, which means it does not drain into the heart. Instead, it brings nutrient-rich blood to the liver from the gastrointestinal tract and spleen.
What is the difference between hepatic vein and renal vein?
The hepatic and renal veins drain into the inferior vena cava. The upper group of hepatic veins consists of three veins which extend to the posterior face of the liver to join the inferior cava. The left renal vein passes anterior to the aorta just below the origin of the superior mesenteric artery.
Is antegrade flow in portal vein normal?
The normal portal venous waveform demonstrates continuous antegrade flow toward the liver with mild respiratory variation and mild cardiac pulsatility.
Is antegrade flow normal?
VERTEBRAL ARTERIES Confirm the flow is antegrade i.e. towards the head – (normal) or retrograde (suggesting subclavian steal syndrome).
Is hepatic portal vein and portal vein the same?
A blood vessel that carries blood to the liver from the intestines, spleen, pancreas, and gallbladder. Also called portal vein.