A 54-year-old man with alcohol-related liver disease and sev…

A 54-year-old man with alcohol-related liver disease and severe protein-calorie malnutrition is prescribed phenytoin for new-onset seizures. Despite a “therapeutic” total level, the patient develops nystagmus, ataxia, and confusion. Which pharmacokinetic change best explains these findings? 

A 78-year-old man with hypertension and stable ischemic hear…

A 78-year-old man with hypertension and stable ischemic heart disease is prescribed metoprolol succinate 50 mg daily. At today’s visit, his BP is 162/88 mmHg and HR 96 bpm. He admits that he “often forgets to take pills at night” and sometimes realizes the next morning. He lives independently and is cognitively intact but has mild age-related memory decline. As his primary care NP, which strategy is most appropriate to improve adherence and clinical outcomes?