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Intracorporeal versus extracorporeal anastomosis in laparoscopic right colectomy: updated meta-analysis of randomized controlled trials.

ABSTRACT:

Background

Selection of intracorporeal anastomosis (IA) or extracorporeal anastomosis (EA) in laparoscopic right colectomy (LRC) remains controversial. This meta-analysis aimed to evaluate the effectiveness and safety of IA compared with EA in LRC patients.

Methods

Literature was searched systematically for randomized controlled trials (RCTs) that compared IA with EA in LRC patients until May 2021. The eligible studies for risk of bias were assessed using the Cochrane Risk of Bias Tool. Data were extracted and analysed for the following outcomes of interest: operative time, length of incision, nodal harvest, bowel function recovery, postoperative pain, postoperative complications (wound infection, anastomotic leak, ileus, obstruction, reoperation), death at 30 days, duration of hospital stay and 30-day readmission.

Results

Five RCTs, including a total of 559 patients, were eligible for meta-analysis. All of the trials reported adequate random sequence generation and allocation concealment. There were significantly better outcomes in the IA group than in the EA group in time to first flatus (mean difference (MD) -0.71 (95 per cent c.i. -1.12 to -0.31), P = 0.0005), time to first passage of stool (MD -0.53 (95 per cent c.i. -0.69 to -0.37), P < 0.00001), visual analogue scale of pain on postoperative day (POD) 3 (MD -0.76 (95 per cent c.i. -1.23 to -0.28), P = 0.002), POD 4 (MD -0.83 (95 per cent c.i. -1.46 to -0.20), P = 0.01), POD 5 (MD -0.60 (95 per cent c.i. -0.95 to -0.25), P = 0.0007), length of incision (MD -1.52 (95 per cent c.i. -2.30 to -0.74), P = 0.0001) and wound infection (relative risk 0.46 (95 per cent c.i. 0.23 to 0.91), P = 0.02). However, there were no statistically significant differences between the two groups in duration of hospital stay (P = 0.47), operative time (P = 0.07), number of lymph nodes harvested (P = 0.70), anastomotic leak (P = 0.88), postoperative ileus (P = 0.48), bleeding (P = 0.15), bowel obstruction (P = 0.24), reoperation (P = 0.34), readmission within 30 days (P = 0.26), and death (P = 0.70).

Conclusion

Compared with EA, IA shows a faster recovery of bowel function with fewer wound infections.

SUBMITTER: Zhang H

PROVIDER: S-EPMC8715734 | biostudies-literature |

REPOSITORIES: biostudies-literature

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Project description:Background Owing to important differences in surgical technique, laparoscopic right colectomy with intracorporeal (ICA) compared to extracorporeal (ECA) anastomotic technique may result in improved patient outcomes. We aimed to compare both techniques according to incisional hernias and other pertinent perioperative characteristics, post-operative complications, and oncologic quality markers. Methods All adult patients undergoing laparoscopic right colectomies between 2015 and 2020 at a single institution were included. ICA and ECA techniques were compared based on selected outcomes using univariable and multivariable statistical analyses, as appropriate. Subgroup analyses were restricted to patients with neoplastic indications for surgery and non-urgent operations. Results A total of 517 patients met inclusion criteria, of which 139 (26.9%) underwent ICA and 378 (73.1%) underwent ECA. ICA and ECA patients had similar baseline characteristics. At two years of follow-up, a lower proportion of ICA patients developed a hernia at the extraction incision (1.5% vs. 7.1%, p = 0.02) and ICA was associated with an 80% reduction in extraction incision hernias (aHR 0.20, p = 0.03). These results were stable through subgroup and sensitivity analyses. Median operative time was longer in the ICA group (186 min vs. 135 min, p < 0.001), but the gap in operative time narrowed during the study period. Median length of stay was one calendar day shorter in the ICA group (3 days vs. 4 days, p = 0.007) and ICA was associated with a 13% decrease in the length of stay (aRR 0.87, p = 0.02). The incidence of superficial wound infections, anastomotic leaks and re-interventions was lower in ICA patients, but this difference was not statistically significant. 90-day unscheduled visits, readmissions, and mortalities were similar across both groups, as were oncologic outcomes. Conclusion Laparoscopic right colectomies with intracorporeal anastomoses are associated with a reduction in incisional hernias and shorter hospital lengths of stay without compromising on patient safety or oncologic principles. Graphical abstract Supplementary Information The online version contains supplementary material available at 10.1007/s00464-022-09585-0.