RELATIONSHIP BETWEEN QRS SCORE AND THE EXTENT OF CORONARY-ARTERY DISEASE

We studied 92 patients to determine the relationship between the QRS t readmill score (QTS) and extent of coronary artery disease. The result s were compared to those of ST segment deviation in a <(+)QRS score> p opulation. A cut off point of < 5 mm was used for mild to moderate ris k patients whereas a QTS of < 3 was considered high risk for the patie nts.(5)) 43% of the patients had high risk QTS and 57% mild to moderat e QTS. A highly significant correlation was observed between the exten t of coronary artery disease and the high risk group of patients, wher eas nonsignificant changes were observed in the control group (p < 0.0 01). Finally, the results indicate that in patients with a (+) QTS sco re (< 5 mm), coronary artery disease was significant and accordingly e xtensive during coronary angiography. On the other hand, a (+) QRS sco re proved to be superior to ST deviation in predicting critical corona ry stenoses in the same population (F ratio; 41 vs 24).