| The Effect of the IV-PCA (Intravenous-Patient Controlled Analgesia) on the Recovery Index. |
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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. |
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| 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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