FCCS FCCS Cardiovascular Emergencies 2

Question 1

Which drug is the antidote for beta-blocker overdose causing bradycardia and hypotension?

Accepted Answer

Glucagon

Answer

Atropine

Answer

Calcium gluconate

Answer

Sodium bicarbonate

Question 2

Pulsus paradoxus greater than 10 mmHg is associated with which condition?

Accepted Answer

Cardiac tamponade

Answer

Aortic stenosis

Answer

Left ventricular failure

Answer

Mitral regurgitation

Question 3

In acute decompensated heart failure, what is the primary goal of IV nitroglycerin?

Accepted Answer

Reduce preload and afterload to decrease pulmonary congestion

Answer

Increase cardiac output directly

Answer

Increase heart rate

Answer

Improve coronary perfusion only

Question 4

Narrow complex tachycardia at 150 bpm with a regular rhythm should prompt consideration of which diagnosis?

Accepted Answer

Atrial flutter with 2:1 block

Answer

Ventricular tachycardia

Answer

Multifocal atrial tachycardia

Answer

Junctional escape rhythm

Question 5

Which intervention is indicated for hemodynamically unstable SVT unresponsive to adenosine?

Accepted Answer

Synchronized cardioversion

Answer

IV amiodarone infusion

Answer

Digoxin loading

Answer

Oral beta-blocker

Question 6

What is the mechanism of action of adenosine in terminating SVT?

Accepted Answer

Transiently blocks AV nodal conduction, interrupting reentry circuits

Answer

Blocks calcium channels in ventricular muscle

Answer

Increases vagal tone chronically

Answer

Prolongs ventricular action potential