A nurse is obtaining the history of a patient who reveals that he had an myocardial infarction (MI)5 years ago.When the admission 12-lead electrocardiogram (ECG)is reviewed,Q waves are noted in leads V3 and V4 only.Which conclusion 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 (eg,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