Deep Neuromuscular Blockade Improves Laparoscopic Surgical Conditions: A Randomized, Controlled Study.

Area of Science:

• Anesthesiology
• Surgical Innovation
• Patient Outcomes

Background:

• Optimal surgical conditions during laparoscopic surgery can be achieved with sustained deep neuromuscular blockade (NMB).
• This study investigated if deep NMB facilitates lower insufflation pressures in laparoscopic cholecystectomy and impacts postoperative pain.

Purpose of the Study:

• To assess if deep NMB improves surgical conditions during laparoscopic cholecystectomy.
• To determine if improved surgical conditions allow for lower insufflation pressures.
• To evaluate the effect of low insufflation pressure on postoperative pain scores.

Main Methods:

• A randomized, controlled, blinded 2x2 factorial study (NCT01728584) compared deep vs. moderate NMB and low (8 mmHg) vs. standard (12 mmHg) insufflation pressure.
• The primary endpoint was surgeon's overall satisfaction with surgical conditions.
• Postoperative pain scores were also evaluated using analysis of covariance.

Main Results:

• Surgeon satisfaction was significantly higher with deep NMB (P=0.026) and standard insufflation pressure (P<0.001).
• Deep NMB did not lead to the use of lower insufflation pressures.
• No significant difference in postoperative pain scores was observed between low and standard insufflation pressures (P=0.494).

Conclusions:

• Deep neuromuscular blockade enhances surgical conditions in laparoscopic cholecystectomy.
• However, deep NMB alone was insufficient to enable lower insufflation pressures.
• Low insufflation pressure did not reduce postoperative pain compared to standard pressure.