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Journal Article
Randomized Controlled Trial
Efficacy of a Laparoscopically Delivered Transversus Abdominis Plane Block Technique during Elective Laparoscopic Cholecystectomy: A Prospective, Double-Blind Randomized Trial.
Journal of the American College of Surgeons 2015 August
BACKGROUND: The management of postoperative pain is paramount to facilitate the delivery of day case surgical programs. In recent years, the complexity of procedures carried out has increased to include laparoscopic cholecystectomy. The aim of this study was to evaluate the impact of laparoscopic-assisted 4-quadrant transversus abdominis plane (TAP) block vs periportal local anesthetic wound infiltration in managing postoperative pain.
STUDY DESIGN: A prospective, randomized, double-blinded trial was conducted with patients undergoing elective laparoscopic cholecystectomy. Patients were randomized using computerized "random number table" into a test group that received laparoscopic-assisted TAP block with bupivacaine with periportal saline injection and a control group that received a laparoscopic-assisted TAP block with saline and periportal bupivacaine. All patients received intraperitoneal instillation of bupivacaine in the gallbladder bed. Postoperative pain scores were recorded using numerical rating scores at rest and coughing at dedicated time points. Statistical analysis was carried out using GraphPad Prism software, version 5 (GraphPad Software) and p < 0.05 was considered significant.
RESULTS: Eighty patients (70 female and 10 male) were enrolled; 40 patients were randomized to each group. Age, American Society of Anesthesiologists score, operative time, and BMI were comparable between the groups. No adverse events were encountered with the administration of TAP blocks. Numerical rating scores were significantly reduced in the test group at 1, 3, and 6 hours at rest (p = 0.025, p = 0.03, and p = 0.007, respectively). Numerical rating score was significantly reduced at 1, 3, and 6 hours during coughing (p = 0.026, p = 0.02, and p = 0.03, respectively). Difference in postoperative analgesic requirements between both groups was statistically insignificant (p = 0.17).
CONCLUSIONS: This analysis has confirmed the therapeutic benefit of laparoscopically delivered TAP blocks in elective laparoscopic cholecystectomy.
STUDY DESIGN: A prospective, randomized, double-blinded trial was conducted with patients undergoing elective laparoscopic cholecystectomy. Patients were randomized using computerized "random number table" into a test group that received laparoscopic-assisted TAP block with bupivacaine with periportal saline injection and a control group that received a laparoscopic-assisted TAP block with saline and periportal bupivacaine. All patients received intraperitoneal instillation of bupivacaine in the gallbladder bed. Postoperative pain scores were recorded using numerical rating scores at rest and coughing at dedicated time points. Statistical analysis was carried out using GraphPad Prism software, version 5 (GraphPad Software) and p < 0.05 was considered significant.
RESULTS: Eighty patients (70 female and 10 male) were enrolled; 40 patients were randomized to each group. Age, American Society of Anesthesiologists score, operative time, and BMI were comparable between the groups. No adverse events were encountered with the administration of TAP blocks. Numerical rating scores were significantly reduced in the test group at 1, 3, and 6 hours at rest (p = 0.025, p = 0.03, and p = 0.007, respectively). Numerical rating score was significantly reduced at 1, 3, and 6 hours during coughing (p = 0.026, p = 0.02, and p = 0.03, respectively). Difference in postoperative analgesic requirements between both groups was statistically insignificant (p = 0.17).
CONCLUSIONS: This analysis has confirmed the therapeutic benefit of laparoscopically delivered TAP blocks in elective laparoscopic cholecystectomy.
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