[Association of QT dispersion, ST/heart rate slope and ST-segment depression in exercise test to evaluate restenosis after percutaneous coronary intervention]

Autor: Rui-tian, Hou, Zhi-min, Hao, Zhen-jiang, Ding, Feng-biao, Jin, Dan-jie, Guo, Chun-hua, Li
Rok vydání: 2007
Předmět:
Zdroj: Zhongguo wei zhong bing ji jiu yi xue = Chinese critical care medicine = Zhongguo weizhongbing jijiuyixue. 19(11)
ISSN: 1003-0603
Popis: To evaluate the sensitivity and specificity of QT dispersion (QTd) and ST/heart rate slope (ST/HRs) at the end of ECG exercise test plus ST-segment depression on diagnosing restenosis after percutaneous coronary intervention (PCI).Between November 2001 and December 2003, 129 patients underwent PCI successfully, and they were examined 3-6 months later. At the end of treadmill exercise, QTd and ST/HRs were measured. All patients also accepted coronary angiography to ascertain whether he/she had restenosis. The results of QTd and ST/HRs plus ST-segment depression were then evaluated.The sensitivity and specificity of QTd and ST/HRs plus ST-segment depression were 84.6% and 80.4% respectively. Both of them were significantly higher than conventional ST-segment depression standard (sensitivity was 53.3% and specificity was 66.7%, P0.05).Measuring QTd and ST/HRs at the end of ECG treadmill exercise test plus ST-segment depression can be used for the diagnosis of restenosis after PCI.
Databáze: OpenAIRE