42 out of 75
In coronary artery disease, the role of beta blocker in decreasing the symptoms is by:
|A||Decreasing the heart rate|
|B||Increasing the coronary blood flow|
|C||Decreasing cardiac force|
|D||Preventing exercise induced tachycardia|
Ans. D. Preventing exercise induced tachycardia
Beta blockers reduce myocardial oxygen demand by inhibiting the increase in heart rate and myocardial contractility caused by adrenergic activity.