A patient presents with severe substernal chest pain.The patient exclaims, "This is the most severe pain I have ever felt!" The patient reports that the pain came on suddenly about 2 hours ago and that three sublingual nitroglycerin tablets have not relieved the pain.The 12-lead ECG reveals only the following abnormalities: T-wave inversion in leads I, aVL, V₄, and V₅; pathologic Q waves in leads II, III, and aVF; ST segment elevation in leads V₁, V₂, V₃, and V₄.Which of the following is probably accurate about this patient?

Question

Quizplus · Accepted Answer

Acute anterior wall infarctions are manifested by electrocardiographic (ECG)changes in leads V₂ to V₄.Inferior infarctions are manifested by ECG changes in leads II, III, and aVF.Lateral wall infarctions are manifested by ECG changes in leads V₅ to V₆, I, and aVL.Posterior wall infarctions are manifested by ECG changes in leads V₁ to V₂.

A Patient Presents with Severe Substernal Chest Pain