CNCC(C) Practice Questions - CNCC(C) Certified Nurse In Critical Care (Canada) Exam

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A 12-lead ECG reveals ST-segment elevation in leads V1 to V4. Which coronary artery is most likely occluded, and which area of the myocardium is affected?

Right coronary artery (RCA); inferior wall. Left anterior descending (LAD) coronary artery; anterior wall. Left circumflex (LCx) coronary artery; lateral wall. Posterior descending artery (PDA); posterior wall.

Correct Answer:

Left anterior descending (LAD) coronary artery; anterior wall.

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