A nurse is obtaining the history of a patient who reveals that he had an MI 5 years ago.When the admission 12-lead ECG is reviewed, Q waves are noted in leads V₃ and V₄only.Which of the following conclusions is most consistent with this situation?

Question

Quizplus · Accepted Answer

Not every acute myocardial infarction (MI)results in a pathologic Q wave on the 12-lead electrocardiogram (ECG).When the typical ECG changes are not present, the diagnosis depends on symptomatic clinical presentation, specific cardiac biomarkers (e.g., cTnI, cTnT, CK-MB), and non-ECG diagnostic tests such as cardiac catheterization.Anterior and posterior wall MIs have ST changes, not Q wave changes.

A Nurse Is Obtaining the History of a Patient Who