c. Have a direct effect on cardiac muscle to cause a decrease in
anginal symptoms
d. All have high oral bioavailability
e. Are contraindicated in the presence of increased intracranial
pressure
9. Regarding Calcium channel blockers
a. Calcium channel blockers are not bound to plasma proteins
b. Nifedipine has less vascular potency than verapamil
c. Felodipine has been shown to inhibit insulin release in humans
d. Diltiazem has a plasma half life of 3 – 4 hours
e. Verapamil has high affinity for cerebral blood vessels thus
decreasing vasospasm post subarachnoid haemorrhage
10. Which of the following calcium channel blockers is excreted
predominantly in the faeces?
a. Nifedipine
b. Felodipine
c. Diltiazem
d. Nimodipine
e. Verapamil
11. Which of the following calcium channel blockers has the longest
plasma half life?
a. Felodipine
b. Diltiazem
c. Amlodipine
d. Nimodipine
e. Verapamil
12. The following include major actions of digoxin on cardiac electrical
functions EXCEPT
a. Decreased PR interval on ECG