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30 November 2010

Patients with ischemic stroke have a higher prevalence of a planar QRS-T angle >90° than patients with transient ischemic attack

Kaushang GandhiABCDEF, Wilbert S. AronowACDEF, Harit DesaiABCDEF, Chandrasekar PalaniswamyABCDEF, Tarunjit SinghABCDEF, Harshad AminABCDEF, Mala SharmaABCDEF, Hoang M. LaiABCDEF

Med Sci Monit 2010; 16(12): CR588-592 :: ID: 881295

Abstract

Background: The aim of the study was to investigate the prevalence of a planar QRS-T angle >90° in patients with ischemic stroke versus transient ischemic attack (TIA).
Material/Methods: In a prospective study of 279 consecutive patients who had ischemic stroke (197 patients) or TIA (82 patients), the planar QRS-T angle was measured from a 12-lead electrocardiogram taken at the time of the stroke or TIA. All QRS-T angle measurements were made by 3 authors who agreed on the measurements and who were blinded to the clinical findings. A QRS-T angle >90° was considered abnormal.
Results: The mean age was 66±6 years in patients with ischemic stroke versus 62±6 years in patients with TIA (p=0.04). The mean body mass index and the prevalence of gender, smoking, hypertension, diabetes mellitus, dyslipidemia, and coronary artery disease were not significantly different between patients with ischemic stroke versus TIA. A QRS-T angle >90° was present in 55 of 197 patients (28%) with ischemic stroke and in 10 of 82 patients (12%) with TIA (p=0.004).
Conclusions: The prevalence of a planar QRS-T angle >90° was higher in patients with ischemic stroke than in patients with TIA (p=0.004).

Keywords: Predictive Value of Tests, Ischemic Attack, Transient - physiopathology, Electrocardiography, Body Mass Index, Prospective Studies, Risk Factors, Stroke - physiopathology, Ventricular Function - physiology

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