بررسی ارتباط بین افزایش QT DISPERSION و فیبریلاسیون بطنی در بیماران مبتلا به انفارکتوس حاد میوکارد بستری در بخش CCU بیمارستان اکباتان همدان

According to recent researches about the importance of prognostic &nbsp;&nbsp; value of QT dispersion (QTD) in patients with acute myocardial infarction , &nbsp;&nbsp; the present study was performed to assess the relationship between QT &nbsp;&nbsp; dispersion increment and incidence of ventricular fibrillation in patients &nbsp;&nbsp; with acute myocardial infarction. &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; QT dispersion was calculated by caliper in the first 24 hour&rsquo;s ECG after &nbsp;&nbsp; acute myocardial infarction in 30 cases of AMI that complicated by &nbsp;&nbsp; ventricular fibrillation and was compared with 200 cases without &nbsp;&nbsp; ventricular fibrillation . Also some information about primary or secondary VF &nbsp;&nbsp; ,EF (according to echocardiography) were recorded in check list. The study &nbsp;&nbsp; was a descriptive , cross - sectional study. &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; Direct relationship between QT increment and mechanical dysfunction &nbsp;&nbsp; of left ventricle (EF < 40%) was showed . In patients with primary VF the &nbsp;&nbsp; mean of QTD was 20 msec more than the patients with secondary VF. In &nbsp;&nbsp; patients with&nbsp; acute myocardial infarction (AMI) that complicated with VF &nbsp;&nbsp; the QTD was greater than the patients without VF. &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; According to above results we can use QTD as a cheap ,easy and &nbsp;&nbsp; available method for diagnosis of increased incidence of VF in patients with &nbsp;&nbsp; AMI.