A Randomized Controlled Trial on Efficacy and Safety of Trocar-Site Infiltration with Lidocaine for Postoperative Pain Relief after Diagnostic Laparoscopy.

BACKGROUND/AIMS: To compare the efficacy and safety of trocar-site infiltration with lidocaine and no intervention for postoperative pain relief after diagnostic laparoscopy.

METHODS

A randomized clinical trial of women with infertility scheduled for diagnostic laparoscopy without additional procedures in Life Institute for Endoscopy at Life Specialist Hospital, Nnewi, Nigeria. One hundred and ninety nine women were assigned at random to either trocar-site infiltration with lidocaine (n = 100) or no intervention (n = 99). Pain was assessed using visual analogue scale (VAS) scores at 2 and 4 h post surgery. The primary endpoints were postoperative pain control and time to first request of analgesia, while the secondary endpoints were total analgesic consumption, shoulder pain, and side effects. Evaluations between the groups were done according to the principle of intention-to-treat.

RESULTS

Baseline characteristics were similar. A nonsignificant reduction was observed in the VAS in the intervention group at base line, 2 and 4 hours into the postoperative period in comparison with no intervention (p > 0.05), and the time to first analgesic requirement was not significantly prolonged (p > 0.05). The mean total consumption of rescue analgesia was not significantly reduced (p > 0.05).

CONCLUSIONS

Postoperative injection of lidocaine in laparoscopy port sites did not significantly improve pain scores after diagnostic laparoscopy.

CLINICAL TRIAL REGISTRATION

PACTR201611001263105.