A client with hepatic encephalopathy is receiving lactulose. Which finding best indicates that the medication is achieving its intended effect?

Lactulose reduces intestinal ammonia absorption and is titrated to regular soft stools. Improved mental status with 2 to 3 soft stools daily shows the intended neurologic and bowel response without suggesting excessive diarrhea.

Quick answer
Improved cognition with 2 to 3 soft stools daily shows an effective lactulose response.

Why this is correct
Gut bacteria convert lactulose into acids that trap ammonia in the colon, and the laxative effect promotes its removal. Mental clarity reflects improvement in encephalopathy, while the stool pattern shows an effective titration target.

Easy analogy or mental picture
Lactulose acts like a shuttle that traps waste in the bowel and carries it out. The analogy helps explain ammonia removal but does not mean serum ammonia alone should replace clinical neurologic assessment.

Memory hook
Clearer thinking plus 2 to 3 soft stools means lactulose is working.

NCLEX decision rule
Evaluate therapy by the outcome it is intended to change. For lactulose in hepatic encephalopathy, pair neurologic improvement with the prescribed soft-stool target and monitor for dehydration or electrolyte loss.

Why the other choices are wrong
Changes in ascites, albumin, edema, urine output, or creatinine reflect other liver or kidney processes and do not directly show lactulose's intended ammonia-lowering response.