Value of plane QRS-T angle on prediction of malignant ventricular arrhythmia occurred after emergency percutaneous coronary intervention in patients with acute myocardial infarction
10.3760/cma.j.jssn.1673-4904.2016.02.017
- VernacularTitle:平面QRS-T夹角对急性心肌梗死经皮冠状动脉介入治疗术后恶性室性心律失常的预测价值
- Author:
He JIANG
;
Shengna LI
;
Suhui ZHU
;
Kun WANG
;
Wei HUANG
;
Biao XU
;
Jie SONG
;
Lian WANG
;
Jingmei ZHANG
- Publication Type:Journal Article
- Keywords:
Myocardial infarction;
Arrhythmias,cardiac;
Angioplasty,balloon,coronary;
Plane QRS-T angle
- From:
Chinese Journal of Postgraduates of Medicine
2016;(2):154-157
- CountryChina
- Language:Chinese
-
Abstract:
Objective To analyze the value of plane QRS-T angle on prediction of malignant ventricular arrhythmia (MVA) occurred after emergency percutaneous coronary intervention (PCI) in patients with acute ST-segment elevation myocardial infarction (STEMI). Methods The clinical data of 418 patients with STEMI who underwent PCI within 12 h of symptom onset were retrospectively analyzed, and the patients were divided into plane QRS-T angle ≤ 90° group (324 cases) and plane QRS-T angle>90° group (94 cases) according to the plane QRS-T angle after PCI. The clinical data were compared between 2 groups. Results Compared with patients in plane QRS-T angle ≤ 90° group, patients in plane QRS-T angle > 90° group was older: (67.4 ± 11.8) years vs. (63.6 ± 12.0) years, QTc interval was longer: (438.60 ± 34.97) ms vs. (425.24 ± 25.49) ms, rate of left ventricular ejection fraction (LVEF) <45% was higher: 57.4% (54/94) vs. 35.8% (116/324), rate of using of beta-blockers was less: 74.5% (70/94) vs. 84.9% (275/324), but the incidences of hypertension and MVA were higher:79.8%(75/94) vs. 64.5%(209/324) and 10.6%(10/94) vs. 1.2%(4/324), and there were statistical differences (P<0.01 or<0.05). Logistic regression analysis showed that plane QRS-T angle >90° was an independent risk factor of MVA after PCI in STEMI patients (OR = 9.640, P =0.001), and using of beta-blockers was a protective factor (OR = 0.266, P = 0.028). Conclusions Plane QRS-T angle>90° is an independent risk factor of MVA after PCI in STEMI patients, while the use of beta-blockers is a protective factor. Paients with STEMI after PCI should be alert to the occurrence of MVA in the condition of plane QRS-T angle>90° and not taking beta-blockers.
