Ischemic J wave changes before and post percutaneous coronary intervention in patients with coronary artery disease
10.3760/cma.j.issn.0253-3758.2010.10.006
- VernacularTitle:经皮冠状动脉介入治疗前后冠心病患者缺血性J波发生率的研究
- Author:
Wu-Yi GUO
1
;
Bao LI
;
Na GUO
;
Hong-Yu WANG
Author Information
1. 山西省心血管病医院
- Keywords:
Coronary disease;
Myocardial ischemia;
Angioplasty. Transluminal. Percutaneous coronary;
Electrocardiography
- From:
Chinese Journal of Cardiology
2010;38(10):891-894
- CountryChina
- Language:Chinese
-
Abstract:
Objective To observe the incidence of ischemic J wave before and post percutaneous coronary intervention (PCI) in patients with coronary heart disease (CHD). Methods CHD patients ( n =117 ) underwent percutaneous coronary intervention (PCI) in Shanxi cardiovascular hospital were included in this study. The 12-lead ECC s were recorded within 24 hours before and after PCI. The ischemic J waves of five lead-groups ( Ⅱ, Ⅲ ,aVF group: V1, V2 group; V3, V4 group; V5, V6 group; Ⅰ ,aVL group) were analyzed and the number of lead-groups with J waves ( 0 - 5 ) were obtained in each patient. According to time course or wave amplitude, J waves were classified into three grades: small (time course between 0.02 -0.03 s or wave amplitude between 0.05 -0.09 mV), large ( time course between 0.04 -0.06 s or wave amplitude between 0.10 -0.20 mV) and enormous (time course ＞0.06 s or wave amplitude ＞0.20 mV) J waves. Results The number of lead-groups with ischemic J waves (0 -5 ) in each patient was similar between pre and post PCI in the 117 patients (χ2 =6.23,P=0.285). The numbers of small, large and enormous J waves were 157, 36 and 9 respectively before PCI and 163, 20 and 5 after PCI. The incidence of small J waves increased (77.72% vs. 86.70% ) while large and enormous J waves decreased ( 17.82%, 4.46% vs. 10.64%, 2.66% ) post PCI ( χ2 = 5.28, P ＜ 0.05 ). Conclusions The numbers of lead-groups with ischemic J waves were similar before and post PCI. However, the amplitude of ischemic J waves decreased after PCI suggesting PCI could improve ischemic J waves in CHD patients.
