Value of the frontal planar QRS-T angle on cardiac dysfunction in patients with old myocardial infarction.
Year: 2013
Type: article
Study design: Observational Study
Abstract: OBJECTIVES: To explore a method of surface electrocardiogram for assessing cardiac dysfunction in patients with old myocardial infarction. METHODS: 1000 patients with old myocardial infarction in Anzhen hospital were analyzed retrospectively. The planar QRS-T angle was calculated automatically according to QRS-wave and T-wave vectors by the electrocardiogram machine. RESULTS: Among these 1000 patients, 822 (82.2%) were male and 178 (17.8%) were female, the mean age was 59.3±10.5 years (34~89 years). The average planar QRS-T angle was 88.5±50.6°. The planar QRS-T angle and LVEF was negative correlation (r=-0.406, p<0.01), the lower the LVEF, the better the relationship with planar QRS-T angle. QRS-T angle>90° had optimal sensitivity and specificity (76%, 74%) in diagnosis of cardiac dysfunction. CONCLUSION: The planar QRS-T angle and LVEF of patients with old myocardial infarction is negative correlation, the larger the planar QRS-T angle, the lower the LVEF. The planar QRS-T angle may be an easier and more feasible index for assessing cardiac dysfunction in patients with old myocardial infarction.
Source: Europe PMC (PubMed Central)
Authors: Yan-Hong Li, Xue-Jun Ren, Zhi-Hong Han, Yun-Long Wang, Ye Wang, Jin-Rong Zhang, Fang Chen
Institutions: Capital Medical University, Beijing Anzhen Hospital
Language: English
Topic: ECG Monitoring and Analysis
Subfield: Cardiology and Cardiovascular Medicine
Field: Medicine
Domain: Health Sciences
Open Access status: green
OpenAlex ID: W9914107