A client with a history of bipolar disorder is prescribed lithium. Which teaching point should the nurse emphasize?

Choice A reason: Lactulose increases stool frequency and liquidity to excrete ammonia in hepatic encephalopathy. A reduction in liquid stools would indicate reduced effectiveness, as the medication’s cathartic effect is essential for ammonia removal. This is not the expected therapeutic response, as increased bowel movements are desired.

Choice B reason: Lactulose reduces blood ammonia levels in hepatic encephalopathy by promoting its excretion in stool, improving mental status. Ammonia accumulation causes neurological symptoms like confusion. Improved cognition and alertness are the primary therapeutic goals, making this the expected response to effective lactulose therapy.

Choice C reason: Ambulation ability is unrelated to lactulose’s mechanism in hepatic encephalopathy. While improved mental status may indirectly aid mobility, lactulose directly targets ammonia reduction, not physical function. This is not the primary therapeutic response, as the medication addresses neurological, not musculoskeletal, symptoms in this condition.

Choice D reason: Lactulose does not directly affect urine output, as it acts in the gastrointestinal tract to excrete ammonia. While hydration status may influence urine, the medication’s primary effect is on bowel movements and ammonia reduction, not renal function, making this an incorrect therapeutic expectation.

Choice A reason: Anorexia is common in hepatitis due to systemic inflammation but is nonspecific, occurring in many conditions. Clay-colored stools directly indicate impaired bile excretion from liver dysfunction, a hallmark of hepatitis, making it a more diagnostic finding.

Choice B reason: Clay-colored stools are highly indicative of hepatitis, as liver inflammation impairs bile production or excretion, reducing bilirubin in feces. This causes pale stools, reflecting hepatic dysfunction, making it a key finding to confirm hepatitis over nonspecific symptoms like anorexia.

Choice C reason: Brown, foamy urine is not typical of hepatitis. Dark urine from bilirubinuria may occur, but foamy urine suggests proteinuria, unrelated to liver dysfunction. Clay-colored stools are more specific, indicating bile flow obstruction, a direct sign of hepatitis pathology.

Choice D reason: Hematemesis indicates gastrointestinal bleeding, not a primary hepatitis feature. While advanced liver disease may cause variceal bleeding, clay-colored stools are an earlier, more specific sign of hepatitis-related bile impairment, making them the priority finding in acute cases.