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KMID : 0368120070370090432
Korean Circulation Journal
2007 Volume.37 No. 9 p.432 ~ p.436
The Value of the First Two Minutes of Heart Rate Recovery after Exercise Treadmill Test in Predicting the Presence and Severity of Coronary Artery Disease
Choi Soo-Hee

Lee Kwang-Je
Lee Kwang-Ho
Lee Kyung-Hun
Choi Yeo-Won
Seo Ki-Woo
Kim Eun-Young
Lee Wang-Soo
Kim Sang-Wook
Kim Tae-Ho
Kim Chee-Jeong
Ryu Wang-Seong
Abstract
Background and Objectives£ºThe recent data has revealed that the first 1 minute and 2 minutes of heart rate recovery of patients who are being evaluated for chest pain and asymptomatic adults are associated with the overall mortality. However, the clinical significance of the heart rate recovery after exercise testing during the first 2 minutes for predicting the presence or severity of coronary artery disease and the correlation with the Duke treadmill score (DTS) have not been fully evaluated.

Subjects and Methods£ºThe study population included 39 patients with significant coronary artery stenosis and 39 subjects with normal coronary arteries. All of them underwent a tread-mill exercise testing prior to coronary angiography. The differences in the heart rate recovery and the DTS between the two groups were investigated. The heart rate recovery and DTS between the multivessel disease group and single vessel disease group were also investigated.

Results£ºThe heart rate recovery during the second minute (calculated by the heart rate at 1 minute-the heart rate at 2 minute) after exercise and the DTS were significantly lower in the coronary artery disease group. These parameters were also significantly lower in the multivessel disease group than those in the single vessel disease group. The heart rate recovery during the second minute and the DTS had positive linear correlation (R=0.281, p<0.05).

Conclusion£ºIn this study, the heart rate recovery during the second minute was considered to be an additional important variable to predict the presence and severity of coronary artery disease.
KEYWORD
Heart rate, Exercise test, Coronary disease
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