An ECG shows ST depression in leads V5-V6 in a patient with angina. Which coronary artery is most likely involved?

An ECG shows ST depression in leads V5-V6 in a patient with angina. Which coronary artery is most likely involved?

  • Correct Answer: Left circumflex artery (LCx)
  • Right coronary artery (RCA)
  • Left anterior descending (LAD)
  • Posterior descending artery (PDA)

Explanation: LCx occlusion causes ST depression in lateral leads (V5-V6).

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