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Korean J Anesthesiol > Volume 39(1); 2000 > Article
Korean Journal of Anesthesiology 2000;39(1):67-71.
DOI: https://doi.org/10.4097/kjae.2000.39.1.67   
Preoperative Heart Rate Affects the Degree of Heart Rate Variability during T2 Sympathicotomy.
Cheung Soo Shin, Youn Woo Lee, Jong Seok Lee, Sang Beom Nam, Chae Yil Jeong, Jung Bok Lee
1Department of Anesthesiology, Yonsei University College of Medicine, Seoul, Korea.
2Department of Statistics, Korea University, Seoul, Korea.
Abstract
BACKGROUND
Thoracoscopic sympathicotomy was thought to be a simple and safe method for hyperhidrosis. There is a significant decrease in heart rate during the procedure. Also it has been suggested that the effect of the degree of sympathetic block on cardiac function was affected by the preoperative level of sympathetic activity. Our hypothesis was that the higher heart rate before sympathicotomy the more heart rate change during the procedure because heart rate is one of the indicators of sympathetic activity.
METHODS
Sixty two patients with essential hyperhidrosis undergoing thoracoscopic sympathicotomy were studied. During the procedure, we recorded blood pressure at left arm and heart rate after anesthetic induction as baseline values, immediately after left side sympathicotomy, and after right side sympathicotomy. Patients were divided by median value of preoperative heart rate (83 beats/min) into group I (n = 32), preoperative heart rate below 83 beats/min, and group II (n = 30), above 83 beats/min.
RESULTS
The preoperative mean heart rates of group I and II were 72 +/- 7.9 beats/min and 100 +/- 12.5 beats/min respectively. After sympathicotomy, the decrease of heart rate compared to the preoperative value in Group I was 6.6%, which was significantly lower than that of Group II, 17.6%. After left sympathicotomy, the number of cases of heart rate decreasing more than 10% was higher in Group II (20/30 cases) than Group I (13/32 cases).
CONCLUSIONS
The main result of this study showed that the higher heart rate before sympathicotomy the more heart rate change during procedure.
Key Words: Heart: pulse rate; Sympathetic nerve system: sympathicotomy
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