Post Laparoscopy Pain Reduction Project I (POLYPREP I): intraperitoneal normal saline instillation-a randomised...

Area of Science:

• Anesthesiology
• Gynecologic Surgery
• Pain Management

Background:

• Postoperative pain is a common complication following gynecological laparoscopic procedures.
• Shoulder pain, often referred pain from diaphragmatic irritation, is a frequent complaint.
• Managing postoperative pain effectively can improve patient recovery and satisfaction.

Purpose of the Study:

• To evaluate the efficacy of intraperitoneal normal saline instillation (INSI) in reducing postoperative pain after gynecological laparoscopic surgery.
• To assess the impact of INSI on both shoulder and upper abdominal pain.
• To determine the optimal dosage of INSI for pain management.

Main Methods:

• A randomized controlled trial was conducted with 68 patients aged 18-55 undergoing elective gynecological laparoscopic procedures.
• Patients were allocated to receive either 15 mL/kg body weight of INSI or conventional carbon dioxide removal techniques.
• Postoperative pain scores for shoulder and upper abdomen were recorded at 24, 48, and 72 hours.

Main Results:

• No significant difference in shoulder pain scores was observed between the INSI group and the control group at any time point.
• A statistically significant improvement in upper abdominal pain scores was noted at 48 hours (p=0.019) and 72 hours (p=0.007) in the INSI group.
• The study found no reduction in shoulder pain with 15 mL/kg INSI, suggesting a potentially higher dose might be needed.

Conclusions:

• Intraperitoneal normal saline instillation (15 mL/kg) is not effective in reducing postoperative shoulder pain after gynecological laparoscopy.
• A modest improvement in upper abdominal pain was observed at 48 and 72 hours post-surgery.
• Higher INSI doses (up to 30 mL/kg) may be necessary for shoulder pain relief, but potential risks like peritoneal adhesions must be considered.