Transversus Abdominis Plane Block in Laparoscopic Colorectal Surgery: A Systematic Review

Area of Science:

• Anesthesiology
• Surgical Recovery
• Pain Management

Background:

• Multimodal analgesia is crucial for effective postoperative recovery in laparoscopic colorectal surgery.
• Transversus abdominis plane (TAP) block with local anesthetic infiltration has been explored to reduce pain and opioid consumption post-surgery, yielding varied results.

Purpose of the Study:

• To evaluate the comprehensive impact of transversus abdominis plane block on postoperative pain, opioid requirements, and recovery speed.
• Specifically assess its efficacy in patients undergoing laparoscopic colorectal surgery.

Main Methods:

• Conducted a systematic literature search across major databases (PubMed, EMBASE, Web of Knowledge, Cochrane Library).
• Included only randomized controlled trials comparing TAP block (with local anesthetic) against no intervention, saline, or alternative methods.
• Analyzed primary outcomes of postoperative pain at day 1 and secondary outcomes including pain beyond day 1, opioid consumption, and hospital stay duration.

Main Results:

• Eight trials with 649 patients (2013-2018) were analyzed.
• Significant reductions in resting pain scores were observed at 2, 4, and 6 hours post-surgery (SMD -0.53 to -0.47; p < 0.05).
• Six studies (413 patients) showed decreased cumulative opioid consumption within 24 hours (SMD -0.82; p = 0.01), but five studies (357 patients) found no significant difference in length of hospital stay (SMD -0.04; p = 0.82).

Conclusions:

• Transversus abdominis plane block effectively lowers resting pain scores within the initial 6 hours post-laparoscopic colorectal surgery.
• The block demonstrates a significant benefit in reducing opioid consumption during the first 24 hours after surgery.
• While effective for early pain and opioid reduction, TAP block did not significantly alter the overall length of hospital stay in this meta-analysis.