(一)氨中毒:(1)肠内未被吸收的蛋白质分解产物,经细菌作用产生的氨,由肠道吸收,是氨的主要来源;(2)肝硬化时门脉内大量的氨经高压造成门一腔静脉的短路,绕过肝脏直接进入体循环。(3)蛋白质分解代谢中,氨基酸通过脱氨基作用产生的氨。前二者产生的氨叫做外源性氨,后者是体内蛋白质分解代谢产生的叫做内源性氨。如肝功能障碍,对氨的解毒能力降低,血氨可显著 (A) ammonia poisoning: (1) the protein is not absorbed in the intestine of protein breakdown products, ammonia produced by bacteria, absorbed by the intestine, is the main source of ammonia; (2) cirrhosis of the portal vein when a large number of ammonia by High pressure creates a short circuit in the vena cava, bypassing the liver and entering the systemic circulation directly. (3) Ammonia produced by the deamination of amino acids in protein catabolism. The first two ammonia produced is called exogenous ammonia, which is produced by the body’s protein catabolism called endogenous ammonia. Such as liver dysfunction, reduce the detoxification of ammonia, blood ammonia can be significant