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- W2392193060 abstract "Objective To investigate the clinical significance of QT dispersion (QTd) during exercise treadmill test in patients with and without coronary artery disease.Methods QTd of 12-lead surface ECG was measured when ST segments depression was more than 1 mm or typical angina occurred or submaximal heart rate was achieved,and after exercise treadmill test 35 patients with coronary artery disease and 35 patients with normal coronary arteries was identified by coronary angiography.Results The QTd were significantly increased in patients with coronary artery disease before,during and after exercise(44.72±9.58,68.65±8.36,79.68±8.03 ms;respectively),compared with those inpatients with normal coronary arteries(25.3±8.43,30.96±7.63,26.68±11.42 ms respectively),all P 0.01;in patients with coronary artery disease,QTd were significantly increased during exercise compared with those before and after exercise( P 0.01).There were no significant changes in QTd in patients with normal coronary arteries before,during and after exercise( P 0.05).Stress QTd of ≥60 ms,the sensitivity is 88.6% and specificityis 91.4% for the diagnosis of coronary artery disease.Conclusions QTd is significantly increased in patients with coronary artery disease during exercise test,QTd during exercise treadmill test could be used for the diagnosis of coronary heart disease." @default.
- W2392193060 created "2016-06-24" @default.
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- W2392193060 date "2004-01-01" @default.
- W2392193060 modified "2023-10-02" @default.
- W2392193060 title "The significance of QT dispersion during exercise treadmill test in patiets with coronary heart disease" @default.
- W2392193060 hasPublicationYear "2004" @default.
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