A method for determining the patency of a portacaval shunt.
D000641:Ammonia / Q000097:blood*; D001769:Blood; D011167:Portacaval Shunt, Surgical; D011168:Portal System / Q000601:surgery*; D014680:Veins; D014684:Venae Cavae / Q000601:surgery*
D000641:Ammonia
AMMONIA/in blood; BLOOD; VEINS, PORTAL SYSTEM/surgery; VENAE CAVAE/surgery