Stress electrocardiography: a comparison of conventional and recent criteria with angiographic correlation

A retrospective study was carried out on 99 patients, who had undergone coronary arteriography to evaluate whether certain new electrocardiographic criteria could effectively enhance the sensitivity, specificity and predictive value of the electrocardiographic stress test over the conventional criteria The new criteria employed included slow upsloping ST. segment depression, exercise induced increase in R-wave amplitude and septal Q-wave phenomenon as against conventional criteria, i.e., horizontal or down sloping ST. segment depression