Question 1

The dihydropyridines block the following type of calcium channels:

Accepted Answer

Dihydropyridines specifically block L-type voltage-sensitive calcium channels, which are primarily found in the cardiovascular system and are important targets for the treatment of hypertension.

Question 2

Select the drug which is a potassium channel opener as well as nitric oxide donor:

Accepted Answer

Nicorandil acts as both a potassium channel opener and a nitric oxide donor, providing vasodilatory effects.

Question 3

Though nitrates and calcium channel blockers are both vasodilators, they are used concurrently in angina pectoris, because:

Accepted Answer

The answer of Though nitrates and calcium channel blockers are...

Question 4

The most likely mechanism of antihypertensive action of thiazide diuretics in the long-term is:

Accepted Answer

Thiazide diuretics initially reduce blood pressure by decreasing blood volume and cardiac output. However, their long-term antihypertensive effect is primarily due to a reduction in total peripheral vascular resistance and improved compliance of resistance vessels, not sustained reductions in volume or cardiac output.

Question 5

Rapid intravenous injection of clonidine causes rise in BP due to:

Accepted Answer

Clonidine, when rapidly injected intravenously, can cause a transient increase in blood pressure due to its agonistic action on peripheral alpha-adrenergic receptors, leading to vasoconstriction.

Quiz 2: Cardiovascular Medications

The dihydropyridines block the following type of calcium channels:

Select the drug which is a potassium channel opener as well as nitric oxide donor:

Though nitrates and calcium channel blockers are both vasodilators, they are used concurrently in angina pectoris, because:

The most likely mechanism of antihypertensive action of thiazide diuretics in the long-term is:

Rapid intravenous injection of clonidine causes rise in BP due to: