Cardiac troponin T, creatine kinase, and its isoform release after successful percutaneous transluminal coronary angioplasty with or without stenting

被引:46
作者
Shyu, KG
Kuan, PL
Cheng, JJ
Hung, CR
机构
[1] Shin Kong Wu Ho Su Mem Hosp, Dept Internal Med, Div Cardiol, Taipei 111, Taiwan
[2] Shin Kong Wu Ho Su Mem Hosp, Dept Surg, Taipei 111, Taiwan
关键词
D O I
10.1016/S0002-8703(98)70047-X
中图分类号
R5 [内科学];
学科分类号
1002 ; 100201 ;
摘要
Background Cardiac troponin T is a sensitive and specific marker for the detection of minor myocardial injury. However, it has been rarely used to monitor myocardial injury after coronary stenting. The purpose of the study was to measure troponin T after apparently successful percutaneous transluminal coronary angioplasty (PTCA) with or without coronary stenting and to compare its result with serum creatine kinase and its isoform, CKMB. Methods The incidence of cardiac troponin T elevation was compared with that of creatine kinase or CKMB in 120 consecutive patients with symptomatic ischemia undergoing visually successful PTCA with (n = 59) or without stenting (n = 61). Troponin T, creatine kinase, and CKMB were measured before, immediately after, and 18 to 24 hours after the procedures were performed. Results No patient had abnormal troponin T, creatine kinase, or CKMB levels before and immediately after the procedures. Moreover, no patient showed electrocardiographic evidence of myocardial infarction. Troponin T was elevated in 17 patients at 18 to 24 hours after coronary stenting and in eight patients after PTCA. Both creatine kinase and CKMB were elevated in five patients after coronary stenting and in three patients after PTCA. The frequency of abnormal troponin T levels was significantly higher than that of creatine kinase or CKMB after coronary interventions (21% vs 6.7%; p < 0.01), and it was significantly higher after stenting when compared with angioplasty alone (29% vs 13%; p < 0.05). Patients with abnormal troponin T levels were more likely to undergo repeat revascularization than those without (24% vs 6%; p < 0.01). Conclusion Cardiac troponin T is more sensitive than creatine kinase and CKMB in detecting minor myocardial injury after coronary interventions. The incidence of troponin T release is higher in the patients undergoing stent implantation than in patients treated with angioplasty alone.
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页码:862 / 867
页数:6
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