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Korean J Anesthesiol > Volume 41(3); 2001 > Article
Korean Journal of Anesthesiology 2001;41(3):318-323.
DOI: https://doi.org/10.4097/kjae.2001.41.3.318   
The Effect of the IV-PCA (Intravenous-Patient Controlled Analgesia) on the Recovery Index.
Gwang Tae Cho, Ho Jung Sohn, Sang Bum Kim, Young Deok Shin, Jin Ho Bae, Sang Tae Kim, Seung Woon Lim
1Department of Anesthesiology, College of Medicine, Chungbuk National University, Cheongju, Korea.
2Medical Research Institute, College of Medicine, Chungbuk National University, Cheongju, Korea.
Abstract
BACKGROUND
It is well known that intravenous patient controlled analgesia (IV-PCA) is an effective method to reduce the magnitude of postoperative pain. However, we do not know the appropriate time to start the IV-PCA. To determine the appropriate time to minimalize the sympathetic stimulation and shorten the awakening time after general anesthesia, experiments to indicate whether starting an infusion of the IV-PCA before the end of an operation has a minimal hemodynamic change and similar recovery index compared with the control group were done.
METHODS
Seventy-eight patients scheduled for a total abdominal hysterectomy were randomly allocated to two groups. In the IV-PCA group (n = 37), we started the infusion of the IV-PCA before the end of the operation and in the control group (n = 41) which received no IV-PCA, we did not use the IV-PCA as a postoperative pain control method. We measured heart rate, blood pressure, postanesthesia recovery score every 10 minutes for 60 minutes and awakening time at the post-anesthesia care unit.
RESULTS
The postanesthesia recovery scores on arrival, 10, 20, 30, 40 and 50 minute after arrival at the post-anesthesia care unit were lower in the IV-PCA group than in the control group. In addition the awakening time after vaporizer-off and at the post-anesthesia care unit was longer in the IV-PCA group than in the control group.
CONCLUSIONS
We conclude that starting the infusion of the IV-PCA before the end of the operation is not effective in early recovery and awakening.
Key Words: intravenous patient-controlled analgesia; awakening time; post anesthesia recovery score


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