الفهرس 
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Abstract
amonge the main obective of clinical cardiology is the detections of coronary atheroscl;eosis in considere of its potential role in the pathologeneis of sudden death myocardial infraction and ischemia the definitive diagnosis of cad and a precise assessment of this anatomical servely and its effect on cardiac performance required cardies catheterization coronary arteiography and left ventriculography graded right trial pacing may be of valua in the study of the patients with cad through the indiction of chest pain electrocardiagraphic st segment depression myocardial lacted prouduction and an increase in lv end distrolic pressure the main aim of our study was to detected the sensitivity and specificuty of atirial pacing stress test as a diagnosis tool in the diagnosis of cad and correlating with the reusult