@Article{Kannam2009,
journal="Archives of Medical Science",
issn="1734-1922",
volume="5",
number="2",
year="2009",
title="Association of the QRS duration on the resting electrocardiogram with the severity of coronary artery disease in 2,196 patients undergoing coronary angiography for suspected coronary artery disease",
abstract="  Introduction:   To investigate the association between QRS duration on the resting electrocardiogram (ECG) with severity of coronary artery disease (CAD) in patients undergoing coronary angiography for suspected CAD.   Material and methods:   We investigated the prevalence of a QRS duration ł 120 ms on the resting ECG in patients with no CAD, nonobstructive CAD, 1-vessel obstructive CAD, 2-vessel obstructive CAD, and 3-vessel obstructive CAD undergoing coronary angiography for suspected CAD. The 2,196 patients included 1,291 men and 905 women, mean age 69 \&#177;10 years, with suspected CAD. Nonobstructive CAD was diagnosed if there was   50% obstruction of at least 1 major coronary artery.   Results:   A QRS duration of ł 120 ms on the resting ECG was present in 30 of 220 patients (14%) with no CAD, in 44 of 276 patients (16%) with nonobstructive CAD, in 76 of 441 patients (17%) with 1-vessel CAD, in 99 of 464 patients (21%) with 2-vessel CAD, and in 217 of 795 patients (27%) with 3-vessel CAD (p < 0.001 comparing 5 with 1, 5 with 2, and 5 with 3; p < 0.02 comparing 5 with 4 and 4 with 1).   Conclusions:   The prevalence of a QRS duration ł 120 ms on the resting ECG increased with increasing severity of obstructive CAD.",
author="Kannam, Hari
and Aronow, Wilbert
and Chilappa, Karin
and Devabhakturi, Srikala
and Singh, Tarunjit
and Kalapatapu, Kumar
and Weiss, Melvin B.
and Pucillo, Anthony L.
and Monsen, Craig E.",
pages="163--165",
url="https://www.termedia.pl/Association-of-the-QRS-duration-on-the-resting-electrocardiogram-with-the-severity-of-coronary-artery-disease-in-2-196-patients-undergoing-coronary-angiography-for-suspected-coronary-artery-disease,19,12867,1,1.html"
}