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  • Title: The efficacy of epidural analgesia after video-assisted thoracoscopic surgery: a randomized control study.
    Author: Yoshioka M, Mori T, Kobayashi H, Iwatani K, Yoshimoto K, Terasaki H, Nomori H.
    Journal: Ann Thorac Cardiovasc Surg; 2006 Oct; 12(5):313-8. PubMed ID: 17095972.
    Abstract:
    PURPOSE: Video-assisted thoracoscopic surgery (VATS) is known to reduce the severity of pain after surgery. However, it has not yet been established whether epidural anesthesia/analgesia (EA) is necessary after VATS. We therefore conducted a randomized control study to examine whether or not EA is necessary for pain control after VATS. PATIENTS AND METHODS: Forty-six patients undergoing VATS were randomly allocated to one of 2 groups: 24 who were given EA after the procedure (EA group) and 22 who were not (NEA group). Patients in the EA group received a continuous infusion of fentanyl and bupivacaine via an epidural catheter for 2 days after VATS. The degree of postoperative pain was assessed on the total dose of additional analgesics administered, a visual analog scale (VAS), a verbal pain score at rest (VPS-R) and on movement (VPS-M), from the day of surgery to the 2nd postoperative day (2 POD). RESULTS: Additional use of rectal diclofenac sodium and intramuscular pentazocine was more frequent in the NEA group than in the EA group (p<0.05). The VAS, VPS-R, and VPS-M scores were significantly lower in the EA group than in the NEA group at 0 POD, from 0 to 1 POD, and from 0 to 2 POD, respectively (p<0.0001-0.05). Stepwise regression analysis revealed that EA was a significant independent variable of VPS-R and VPS-M from 0 to 1 POD (p<0.05). However, the incidence of nausea/vomiting in the EA group was 29%, which was more frequent than in the NEA group (5%) (p<0.05). CONCLUSION: While EA causes nausea/vomiting in some patients, it is effective for pain control until 1 POD after VATS, especially for pain on movements.
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