Value of the frontal planar QRS-T angle on cardiac dysfunction in patients with old myocardial infarction.
Int J Clin Exp Med
; 6(8): 688-92, 2013.
Article
in En
| MEDLINE
| ID: mdl-24040478
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.
Full text:
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Database:
MEDLINE
Language:
En
Year:
2013
Type:
Article