Addition of the duration of ST segment depression to Duke treadmill score for diagnostic accuracy of exercise electrocardiography to predict obstructive coronary artery disease
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info:eu-repo/semantics/embargoedAccessTarih
2022Yazar
Turhan Çağlar, Fatma NihanGök, Gülay
Öztimer, Gülsüm
Katkat, Fahrettin
Karakozak, Dilay
Öztaş, Didem Melis
Beyaz, Metin Onur
Uğurlucan, Murat
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Turhan Çağlar, F. N., Gök, G., Öztimer, G., Katkat, F., Karakozak, D., Öztaş, D. M. ... Uğurlucan, M. (2022). Addition of the duration of ST segment depression to Duke treadmill score for diagnostic accuracy of exercise electrocardiography to predict obstructive coronary artery disease. Acta Cardiologica, 77(6), 494-500. https://doi.org/10.1080/00015385.2021.1964210Özet
Introduction Exercise electrocardiography (EET) is a safe and cost-effective method to predict the presence, prognosis, and severity of coronary artery disease (CAD). Various score models have been developed to increase predictive power of EET. In this study, we aimed to evaluate whether adding ST depression duration could have an effect on increasing the value of Duke treadmill score (DTS) in predicting obstructive CAD. Methods In this single centred, cross-sectional study, we evaluated a total of 258 patients who presented with a complaint of chest pain and undergone coronary angiogram in result of a positive EET. DTS was calculated for all the patients. The new score-revised DTS- was calculated by adding total ST depression time to classical DS parameters. We compared area under the curve (AUC) of DTS and revised DTS by Delongi method. Results Mean age of the group was 58.43 +/- 9.37, and 37.2% (n = 96) were female. Mean total ST-depression duration was 171.72 +/- 91.43 msec in normal artery group,241.54 +/- 118.11 msec in non-obstructive CAD group, and 281.26 +/- 113.64 in obstructive CAD group.ST-depression duration in both exercise and recovery, and total ST depression duration were significantly higher in obstructive CAD group than non-obstructive and normal artery groups (p = 0.024, p = 0.01, p < 0.01, and p < 0.01, respectively). Revised DTS had significantly higher predictive value of obstructive CAD compared to classical DS (AUC (95%CI): 0.744 vs. 0.626, p < 0.001). The AUC of DS was significantly lower than the new score (z-score:3.274, p = 0.011). Conclusion In conclusion, adding ST depression duration to DTS calculation is increasing the discriminative value of DTS to predict obstructive CAD. Benefits of EET within the context of the management of CAD is well-known, hence, it is clear that physicians may use revised DTS.
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Acta CardiologicaCilt
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