Atropine degrades slowly, typically wearing off in 7 to 14 days, so it is generally used as a therapeutic mydriatic, whereas tropicamide (a shorter-acting cholinergic antagonist) or phenylephrine (an Î±-adrenergic agonist) is preferred as an aid to ophthalmic examination.
Read More. The normal ammonia range is 10â47 Î¼mol/L. High ammonia levels and signs of hepatic encephalopathy is a worsening of brain function that occurs when the liver is no longer able to remove toxic substances in the blood due to cirrhosis. Symptoms may be mild at first.
High levels of ammonia in the blood are dangerous and can cause symptoms such as confusion, sluggishness, and coma. High ammonia levels in the blood can result from acute liver failure. Cirrhosis of the liver and poor liver function can also cause high levels.