Ch. 45 Calcium Channel Blockers

Question 1

General action of calcium channel blockers

Answer 1

prevent calcium ions from entering cells

Question 2

Action of CCBs on the heart?

Answer 2

help regulate the myocardium, SA node, and AV node; are coupled to B1 adrenergic receptors

Question 3

dihyropyridines

Answer 3

nifedipine

Question 4

Verapamil therapeutic uses

Answer 4

angina pectoris, essential hypertension, cardiac dysrhythmias

Question 5

verapamil adverse effects

Answer 5

cardiac effects such as bradycardia, AV block, decreased contractility, constipation-most common

Question 6

Diltiazem uses

Answer 6

HTN, angina pectoris, cardiac dysrythmias

Question 7

Diltiazem adverse effects

Answer 7

same as verapamil- less constipation, edema, flushing, headache, edema

Question 8

Nifedipine therapeutic uses

Answer 8

angina, HTN

Question 9

Nifedipine adverse effects

Answer 9

flushing, dizziness, peripheral edema,little constipation, reflex tachycardia