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Meta‐analysis of totally extraperitoneal inguinal hernia repair in patients with previous lower abdominal surgery

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Background

Previous lower abdominal surgery is considered a relative contraindication to laparoscopic totally extraperitoneal (TEP) inguinal hernia repair. This was a meta‐analysis of studies comparing the feasibility and safety of TEP repair between patients with (PS), and without (NS) a history of lower abdominal surgery.
Methods

A systematic literature search was undertaken for studies comparing the outcome of TEP inguinal hernia repair in patients with, and without previous lower abdominal surgery. Data on postoperative outcomes were extracted and compared by meta‐analysis. Odds ratios (ORs) and mean differences with 95 per cent confidence intervals were calculated.
Results

Seven comparative cohort studies were identified, involving a total of 1657 procedures (PS 326, NS 1331). There was a statistically significant difference between PS and NS favouring the NS group with regard to both primary outcomes: intraoperative morbidity (OR 2·85, 95 per cent c.i. 1·19 to 6·80; P = 0·02; 7 studies; I 2 = 33 per cent), and postoperative morbidity in the multiport subgroup (OR 2·14, 1·28 to 3·58; P = 0·004; 5 studies; I 2 = 0 per cent). For the secondary endpoints conversion rate, peritoneal tears, major intraoperative bleeding, postoperative haematoseroma and delay in return to normal activities, there was a statistically significant difference favouring the NS group.
Conclusion

This study suggests that patients with previous lower abdominal surgery who need hernia repair get less benefit from TEP repair than those with no history of surgery.
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Document Type: Research Article

Publication date: June 1, 2019

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