J Korean Med Sci.
2002 Dec;17(6):743-748. 10.3346/jkms.2002.17.6.743.
Prediction of Left Ventricular Peak Ejection Velocity by Preceding and Prepreceding RR Intervals in Atrial fibrillation:A New Method to Adjust the Influence between Two Intervals
- Affiliations
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- 1Division of Cardiology, Department of Internal Medicine, College of Medicine, Chung-Ang University, Seoul, Korea. cjkim@cau.ac.kr
- KMID: 648781
- DOI: http://doi.org/10.3346/jkms.2002.17.6.743
Abstract
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In atrial fibrillation, cardiac performance is dependent on both preceding RR (RR-1) and prepreceding RR (RR-2) intervals. However, relative contributions were not well defined. Left ventricular outflow peak ejection velocity (Vpe) was measured by echocardiography from 21 patients. The relation between RR-1 and Vpe could be divided into two zones; steep slope in short RR-1 intervals (
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