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.
10.3346/jkms.2002.17.6.743
- Author:
Hong Sook KO
1
;
Kwang Je LEE
;
Sang Wook KIM
;
Tae Ho KIM
;
Chee Jeong KIM
;
Wang Seong RYU
Author Information
1. Division of Cardiology, Department of Internal Medicine, College of Medicine, Chung-Ang University, Seoul, Korea. cjkim@cau.ac.kr
- Publication Type:Original Article
- Keywords:
Atrial Fibrillation;
Electrocardiography;
Echocardiography;
Doppler;
Pulsed;
Stroke Volume
- MeSH:
Aged;
Aged, 80 and over;
Atrial Fibrillation;
*Atrial Function, Left;
Echocardiography, Doppler, Pulsed/*methods;
Electric Countershock;
Electrocardiography/*methods;
Female;
Heart/*physiology;
Heart Ventricles;
Humans;
Male;
Middle Aged;
Myocardium/pathology;
Time Factors
- From:Journal of Korean Medical Science
2002;17(6):743-748
- CountryRepublic of Korea
- Language:English
-
Abstract:
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 ( 0.5 sec). RR-2 had a weak negative association with Vpe. The mean squared correlation coefficient (r2 ) between RR-2 and Vpe was 0.15 +/-0.13 and improved to 0.29 +/-0.21 (p<0.001), when coordinates with RR-1
