AEMCA Cardiovascular Emergencies 2

Question 1

A patient presents with crushing chest pain radiating to the left jaw, diaphoresis, and nausea. Which coronary artery is most commonly occluded in an anterior wall MI?

Accepted Answer

Left anterior descending artery

Answer

The left anterior descending (LAD) artery supplies the anterior wall of the left ventricle and is most commonly occluded in anterior MI.

Question 2

When applying a 12-lead ECG, which limb lead placement error will invert Lead I and reverse aVR and aVL?

Accepted Answer

Swapping RA and LA electrodes

Answer

Swapping the right arm (RA) and left arm (LA) electrodes inverts Lead I and reverses the augmented limb leads aVR and aVL.

Question 3

A patient in ventricular fibrillation receives a defibrillation shock. What is the IMMEDIATE next step after the shock is delivered?

Accepted Answer

Resume CPR for 2 minutes

Answer

Current AHA guidelines require immediate resumption of CPR for 2 minutes after a defibrillation shock before rhythm and pulse checks.

Question 4

Which ECG finding is most characteristic of hyperkalemia-induced cardiac toxicity?

Accepted Answer

Peaked (tall, narrow) T waves

Answer

Hyperkalemia classically causes tall, peaked, narrow T waves as an early sign of cardiac toxicity.

Question 5

A patient with known heart failure presents with severe dyspnea, pink frothy sputum, and SpO2 of 84%. After high-flow oxygen, what is the priority pharmacological intervention?

Accepted Answer

Furosemide IV 40–80 mg

Answer

IV furosemide reduces preload by promoting diuresis and venodilation, directly addressing pulmonary edema in acute decompensated heart failure.

AEMCA - Advanced Emergency Medical Care Assistant Practice Test

AEMCA - Advanced Emergency Medical Care Assistant Practice Test

AEMCA Cardiovascular Emergencies 2