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Cardiovascular Drugs: Angina Pectoris

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Questions and Answers

What is the primary beneficial effect of nitrate in the context of angina pectoris?

Decreased oxygen requirement by increasing preload

Increased oxygen supply by dilating collateral vessels (correct)

Decreased oxygen supply by constricting collateral vessels

Increased oxygen demand by dilating coronary arteries

What is the main adverse effect of nitroglycerin that is treated by aspirin?

Rapid tolerance with chronic use

Postural hypotension

Throbbing headache due to vasodilation of meningeal arteries (correct)

Reflex tachycardia

Which precaution should be taken while using nitrates to avoid precipitation of angina?

Removing the tablet on relief to use the minimal effective dose (correct)

Using nitrates in combination with beta blockers

Abruptly stopping the drug if symptoms worsen

Instructing the patient to stand while taking the drug

Which class of drugs inhibit calcium influx into cardiac cells and arterial smooth muscles, leading to decreased myocardial oxygen demand and arterial vasodilation?

Dihydropyridines Signup and view all the answers

Ivabradine selectively blocks the sodium channels current in the SA node, leading to:

Reduced heart rate with no detectable hemodynamic effect Signup and view all the answers

What is the main cause of Angina of Effort?

Coronary atherosclerosis Signup and view all the answers

Which type of Angina Pectoris is considered an emergency case?

Unstable Angina Signup and view all the answers

What is the main pharmacological action of organic nitrates in treating angina?

Arterial dilatation Signup and view all the answers

Which type of Angina Pectoris is due to reversible spasm of the coronary artery?

Variant Angina Signup and view all the answers

What is the main action of calcium channel blockers in treating angina?

Reduced preload Signup and view all the answers