A planar QRS-T angle >90° is associated with multivessel coronary artery disease in patients undergoing coronary angiography

Chandrasekar Palaniswamy, Tarunjit Singh, Wilbert S. Aronow, Chul Ahn, Kumar Kalapatapu, Melvin B. Weiss, Anthony L. Pucillo, Craig E. Monsen

Research output: Contribution to journalArticle

13 Scopus citations

Abstract

Background: The aim of the study was to investigate the severity of coronary artery disease (CAD) in patients who had a planar QRS-T angle >90° versus ≤90° . Material/Methods: Coronary angiography was performed in 1,229 consecutive patients. Obstructive CAD was diagnosed if there was >50% obstruction of ≥1 major coronary artery. All QRS-T angle measurements were made from a 12-lead electrocardiogram by 2 authors who agreed on the measurement and who were blinded to the coronary angiographic findings. A QRS-T angle >90° was considered abnormal. Results: Obstructive CAD of 2 or 3 vessels was present in 309 of 495 patients (62%) with a planar QRS-T angle >90° and in 250 of 734 patients (34%) with a planar QRS-T angle ≤90° . (p<0.0001). Stepwise logistic regression analyses showed that significant independent risk factors for 2- or 3-vessel CAD were age (odds ratio =1.05), male gender (odds ratio =1.8), black race (odds ratio =0.34), unstable angina (odds ratio =0.16), positive stress test (odds ratio =3.0), hypertension (odds ratio =3.0), dyslipidemia (odds ratio =2.9), QRS-T angle (odds ratio =7.2), left bundle branch block (odds ratio =2.9), right bundle branch block (odds ratio =0.17), smoking (odds ratio =9.7), and body mass index ≥30 kg/m2 (odds ratio =1.5). Conclusions: The prevalence of 2- or 3-vessel obstructive CAD was significantly higher in patients with a planar QRS-T angle >90° than in patients with a planar QRS-T angle ≤90° (pp&lt0.0001).

Original languageEnglish (US)
Pages (from-to)MS31-MS34
JournalMedical Science Monitor
Volume15
Issue number12
StatePublished - Dec 1 2009

Keywords

  • Coronary angiography
  • Coronary artery disease
  • Planar QRS-T angle

ASJC Scopus subject areas

  • Medicine(all)

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    Palaniswamy, C., Singh, T., Aronow, W. S., Ahn, C., Kalapatapu, K., Weiss, M. B., Pucillo, A. L., & Monsen, C. E. (2009). A planar QRS-T angle >90° is associated with multivessel coronary artery disease in patients undergoing coronary angiography. Medical Science Monitor, 15(12), MS31-MS34.