When a calcium channel blocker is prescribed for hypertension, what is a priority teaching point?

When a calcium channel blocker is prescribed for hypertension, what is a priority teaching point?

• A. Hair loss may occur.
• B. Watch for decreased urine output.
• C. May develop high blood pressure.
• D. May feel dizzy when standing quickly.

Answer: (B)

Monitoring urine output is a priority because calcium channel blockers can lower blood pressure and, in some individuals, reduced renal perfusion may lead to decreased urine production. If a patient notices a sudden drop in urine output, it can indicate dehydration, excessive hypotension, or evolving renal impairment, all of which require prompt assessment and possible adjustment of therapy. Teach patients to measure daily urine, report oliguria promptly, and seek evaluation so the healthcare team can check hydration, kidney function, and blood pressure. While dizziness on standing can occur with these medications and hair loss is not typical, the development of decreased urine output signals a potential complication that needs attention.

Monitoring urine output is a priority because calcium channel blockers can lower blood pressure and, in some individuals, reduced renal perfusion may lead to decreased urine production. If a patient notices a sudden drop in urine output, it can indicate dehydration, excessive hypotension, or evolving renal impairment, all of which require prompt assessment and possible adjustment of therapy. Teach patients to measure daily urine, report oliguria promptly, and seek evaluation so the healthcare team can check hydration, kidney function, and blood pressure. While dizziness on standing can occur with these medications and hair loss is not typical, the development of decreased urine output signals a potential complication that needs attention.