الفهرس 
IntroductionOnly 14 pages are availabe for public view
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Abstract
BacST Elevation Myocardial infarction (STEMI) is a major public health problem in both the developed and the developing countries in the world. The incidence in the developing countries is now similar to that in the developed countries. Two major determinants of clinical outcome in patients with acute myocardial infarction are the extent of the infarction and the residual left ventricular function. As the ECG is inexpensive, non-invasive, and available from the onset of care, attempts have been made to utilize it to estimate area at risk. The Selvester QRS scoring system was initially developed to estimate electrocardiographically the size of myocardial infarction. It includes 50 criteria that form the basis of a 31-point scoring system, with each point equivalent to approximately 3% of the left ventricle. Here QRS score derived from admission ECG is evaluated to predict extent of infarction, left ventricular function, successful ST segment resolution, and complications after primary percutanous coronary intervention.
Objectives: We evaluated a simplified QRS scoring system in patients admitted with a first STEMI, and compared this QRS scoring system to echocardiographic, angiography, and clinical findings for determining its value in prediction of the size of infarction, residual left ventricular function and severity of coronary artery diseases.
Patients and methods: Sixty patients with first ST elevation myocardial infarction were included in this study none of them had left ventricular hypertrophy, bundle branch blocks or other conduction abnormalities in their baseline ECG.45 patients received thrombolytic therapy & 15 underwent primary PCI.
Results: The study shows non-significant relationship between admission QRS score and the age or gender of the patient.
Conclusion: from these results, we can conclude that Selvester QRS scoring system is regaining its clinical value in patients with first STEMI. It can provide valuable information as regard area of myocardium at risk, prediction of residual left ventricular function, making treatment decisions. Though somewhat difficult, it is worthy to calculate QRS score from admission ECG in every patient presenting with STEMI. In patients who are controversial as regard thrombolytic therapy, QRS score could help in detemining those who will get benefit from such therapy. Further studies are needed to confirm its relation with terminal MBG in the primary PCI era.