Hepatic blood flow

Q. All are true regarding hepatic blood flow except
A. Liver has dual blood supply from portal vein and hepatic artery
B. 70% of liver oxygen comes from the hepatic artery
C. 70-80% of blood supply to the liver is from portal vein

d) Liver receives 25% of cardiac output

Answer for premium

The explanation discusses how much blood and oxygen goes through portal vein and hepatic artery to the liver

What is hepatic artery buffer response

 

Liver trauma

Q) All are true for blunt hepatic trauma except
A. Grade V liver injuries are associated with vascular avulsion
B. Hepatic packing is an expeditious method to control bleeding in blunt hepatic trauma
C. After damage control Surgery and hepatic packing, abdominal compartment syndrome can
happen in immediate postoperative period
D. Post conservative management, in the 3rd week anemia MC occurs due to subcapsular
hematoma rupture

Answer

Contraindication of liver transplantation

Q)Contraindications of liver transplantation have changed over the years. Which is an absolute contraindication of  liver transplantation

a) Previous breast cancer

b) Portal vein thrombosis

c) Active tuberculosis

d) Active substance abuse

Answer

d

Previous history of breast cancer if completely treated is not an contraindication of liver transplant. Portal vein thrombosis was earlier considered a relative contraindication but almost all series have shown similar results in patients with PVT than patients without PVT.

IN portal vein thrombosis, inflow to the new liver can me taken in many ways

a) thrombectomy

b) Jump grafts from Superior mesenteric vein 

c) Anastomosis have been done from big collaterals

Active tuberculosis can be managed after transplant.

Modified ATT regimens without INH and Rifampicin are being  used.  Any kind of active substance abuse alcohol,  drugs etc are absolute contraindications for liver transplant because the disease will recur.

HCC Cancer

Q) Which of the following is true about screening in hepatocellular carcinoma (HCC Cancer) 

a) Alpha feto protein should be done 6 monthly

b) Ultrasound abdomen should be done 6 monthly

c) Candidates for liver transplant should be screened every 3 months

d) Nodules more than 2 cm should be followed up  more regularly

Answer b

In a cirrhotic liver, hcc cancer  can develop any time and a stringent screening protocols  have  to be followed for early detection and timely treatment. Earlier ultrasound of liver and alpha feto protein were both used as tumor markers. However in 2009 Marrero et al demonstrated the suboptimal accuracy of AFP and after that it has been removed from the screening protocol and now only ultrasound is being done.

The screening recommendation is not for those patients with severe Read More ...