What parameter should concern the nurse the most in a patient taking digitalis?

A. Orthostatic hypotension: Simvastatin does not typically affect blood pressure or cause orthostatic changes. Monitoring for hypotension is not a priority with this medication, as its mechanism focuses on lipid metabolism rather than vascular tone.

B. Blurred vision: Visual disturbances are not commonly associated with simvastatin use. While any new symptoms should be assessed, blurred vision is unlikely to be a direct adverse effect of statin therapy.

C. Urinary retention: Simvastatin does not affect bladder function or urinary output. Urinary retention is not a recognized complication and would warrant evaluation for other underlying causes.

D. Muscle weakness: Muscle pain or weakness (myopathy) is a known adverse effect of simvastatin. It can range from mild discomfort to severe rhabdomyolysis. Monitoring for muscle symptoms is essential to prevent serious complications and ensure medication safety.

A. parkinsonism: Atropine-like drugs may worsen certain symptoms such as confusion, but they are not absolutely contraindicated in parkinsonism. Some anticholinergic agents are even used to reduce tremors, so this condition does not represent the primary concern.

B. glaucoma: These drugs increase intraocular pressure by causing pupil dilation, which can obstruct aqueous humor outflow. In clients with glaucoma—especially narrow-angle—this can trigger dangerous pressure elevations and worsen vision rapidly.

C. peptic ulcer: Anticholinergics may slow gastric motility, but they do not directly worsen ulcer pathology. Although used cautiously, they are not considered strictly contraindicated in peptic ulcer disease.

D. cirrhosis: Liver disease requires careful medication management, yet atropine-like drugs do not pose a specific prohibitive risk. They may need dose adjustment, but cirrhosis is not a direct contraindication to their use.