Pain control after microlaparoscopy.

STUDY OBJECTIVE

To evaluate the efficacy of intraperitoneal subdiaphragmatic instillation of 0.5% lidocaine and 0.5% bupivacaine infiltration of cannula sites to control pain after diagnostic microlaparoscopy.

DESIGN

Prospective, randomized study. (Canadian Task Force classification I).

SETTING

Day surgery unit of Endogyn Service, Private Endoscopic Associates, Naples, and Department of Gynecologic and Pediatric Sciences, Reggio Calabria University, Catanzaro, Italy.

PATIENTS

Forty women treated for infertility.

INTERVENTIONS

The treated group received 0.5% intraperitoneal subdiaphragmatic lidocaine 40 ml and 0.5% bupivacaine 5 ml infiltration of cannula insertion sites. The control group received no treatment. In all patients the procedure was performed with atropine 0.5 mg, fentanyl 0.1 mg, droperidol 5 mg, and local anesthesia. Postoperatively, depending on the need, ketoprofene 100 mg or ketorolac 30 mg was administered intramuscularly.

MEASUREMENTS AND MAIN RESULTS

Postoperative pain score was evaluated by visual analog scale immediately postoperatively and 1, 3, 6, 12, 24, 36, and 48 hours afterward. The treated group had significantly lower pain scores at the end of surgery and at 1-, 3-, (p <0.01), and 6-hour intervals (p <0.05). No significant differences in scores between groups were observed starting from 6 hours postoperatively.

CONCLUSION

Postoperative intraperitoneal lidocaine and bupivacaine infiltration of cannula sites offered a detectable benefit to women undergoing diagnostic microlaparoscopy. The effect was temporary, but induced a significant decrease in the postoperative pain for approximately 6 hours.