Blood ammonia levels in the inferior vena cava: a simple test of portacaval shunt patency.
D000641:Ammonia / Q000097:blood*; D004932:Esophageal and Gastric Varices / Q000150:complications; D006975:Hypertension, Portal / Q000601:surgery; D011167:Portacaval Shunt, Surgical; D014682:Vena Cava, Inferior
D000641:Ammonia