Implications of ST-segment Elevation in Leads V5 and V6 in Patients with Reperfused Inferior Wall Acute Myocardial Infarction

Abstract

ST- elevation myocardial infarction is by far the most serious presentation of ACAD (acute coronary artery disease) carrying the most hazardous consequences& patients with ST elevation are triaged immediately for reperfusion therapy, according to ACC/AHA& ESC guidelines for acute MI. Inferior wall myocardial infarctions account for 40- 50% of all acute myocardial infarctions and are generally viewed as having a more favorable prognosis than anterior wall infarctions.Data from a number of recent trials of thrombolytic therapy in acute infarction appear to support this view, with mortality rates of 2-9% reported among patients with inferior infarctions. During inferior wall myocardial infarction, ST-segment elevation often occurs in leads V5 to V6, but its clinical implications remain unclear. The value of ST elevation in V5 and V6 as a prognostic tool for the effectiveness of revascularization post primary PCI is not clear, limited data on the existence of ST elevation in V5 andV6, deriving its value by the persistence of that elevation in those chosen leads. Aim of the study: To detect the degree of myocardial reperfusion in patients with re-perfused inferior wall myocardial infarction, according to the degree of ST segment elevation in leads V5 and V6