Which calcium channel blocker possesses predominant negative chronotropic and dromotropic cardiac effects rather than peripheral vasodilatory actions?
Answer and explanation
Correct answer: A. Verapamil
Answer: Verapamil.
Why not the others: Amlodipine, nifedipine, and nicardipine are dihydropyridine calcium channel blockers that act predominantly on peripheral arteriolar smooth muscle to reduce systemic vascular resistance, with minimal direct effect on AV nodal conduction.
Why not the others: Amlodipine, nifedipine, and nicardipine are dihydropyridine calcium channel blockers that act predominantly on peripheral arteriolar smooth muscle to reduce systemic vascular resistance, with minimal direct effect on AV nodal conduction.
Practise more Applied Clinical Pharmacology, Dosages and Fluid Balance.
Free questions with an explanation for every one, and full timed MOH Prometric mock tests.
More Applied Clinical Pharmacology, Dosages and Fluid Balance questions
- A physician orders 1,000 mL of 0.9% Normal Saline to be infused intravenously over 8 hours. The infusion set delivers 15 drops per mL (gtt/m…
- A pediatric patient weighing 18 kg requires oral Amoxicillin suspension prescribed at 40 mg/kg/day divided into two equal doses every 12 hou…
- A patient is receiving an intravenous infusion of regular insulin for diabetic ketoacidosis. The nurse knows that as blood glucose decreases…
- A patient with severe hypertension is prescribed intravenous Sodium Nitroprusside infusion in the ICU. The nurse observes that the infusion…
- A registered nurse is preparing to administer intramuscular Haloperidol. The physician's order reads: 'Haloperidol 7.5 mg IM stat'. The ampo…
- A patient on long-term Spironolactone therapy for congestive heart failure is prescribed an ACE inhibitor (Lisinopril) for refractory hypert…