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Bayesian network meta-analysis of the effects of single-incision laparoscopic surgery, conventional laparoscopic appendectomy and open appendectomy for the treatment of acute appendicitis

Feng, J.; Cui, N.; Wang, Z.; Duan, J.

Experimental and Therapeutic Medicine 14(6): 5908-5916

2017


ISSN/ISBN: 1792-0981
PMID: 29285140
DOI: 10.3892/etm.2017.5343
Accession: 052185620

The present study aimed to systematically evaluate the effectiveness of single-incision laparoscopic surgery (SILS), conventional laparoscopic appendectomy (CLA) and open appendectomy (OA) for the treatment of acute appendicitis. PubMed and Embase databases were systematically searched to identify relevant studies comparing the effectiveness of different appendectomy methods for treating acute appendicitis published prior to April 2016. ADDIS 1.16.5 software was used for data analysis. Heterogeneity was assessed using I2 statistic. Odds ratios or standardized mean differences and 95% confidence intervals were calculated and pooled accordingly. Consistency was assessed using node-splitting analysis and inconsistency standard deviation. Convergence was assessed with the Brooks-Gelman-Rubin method using Potential Scale Reduction Factor (PSRF). Surgical procedure duration, duration of hospital stay, wound infection and incidence of abscesses were compared. A total of 24 eligible studies were included in this meta-analysis. A consistency model was used to pool data regarding the four outcomes. The PSRFs in each item were all <1.03. Pooled results showed that, compared with OA, SILS and CLA were associated with significantly shorter durations of hospital stay (all P<0.01) and lower risk of wound infection (SILS vs. OA P=0.02 and CLA vs. OA P<0.01, respectively), but no significant differences were identified between SILS and CLA. However, compared with OA, SILS exhibited a significantly longer surgical procedure duration (P=0.01) and lower incidence of abscesses (P=0.04), while no significant difference was observed between OA and CLA. This comprehensive network meta-analysis indicated that laparoscopic appendectomy, including SILS and CLA, may have more advantages for acute appendicitis compared with OA. Furthermore, SILS procedures require improvement and simplification to reduce the surgical procedure duration.

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