Laparoscopic transabdominal vs. totally extraperitoneal inguinal hernia repair: outcomes, healthcare utilization, and cost differences.

Background: Laparoscopic inguinal hernia repair utilizes either a transabdominal preperitoneal (TAPP) or totally extraperitoneal (TEP) approach. The literature remains mixed on outcomes comparing TAPP versus TEP. The objective of our study was to assess outcomes, healthcare utilization, and cost differences between TAPP and TEP inguinal hernia repair.

Methods: Adult patients who underwent elective inguinal hernia repair between 2013 and 2021 were retrospectively identified from our institution's electronic health record. Baseline characteristics and postoperative complications were compared using chi-squared test. Multivariable logistic regression was used to model the odds of experiencing a postoperative emergency department visit, readmission, and/or reoperation within 6 months were surgery. Generalized linear models were used to investigate differences in cost between TAPP and TEP groups.

Results: 1086 patients underwent TAPP repair, while 1277 patients underwent TEP repair. TAPP patients had more than double the rates of readmissions (3.1% vs. 1.3%, p = 0.002) and reoperations (1.5% vs. 0.2%, p = 0.001) within 6 months of surgery. On multivariable analysis, undergoing TAPP inguinal hernia repair was associated with higher odds of reoperations and/or readmissions within 6 months of surgery (OR 2.8, CI [1.5, 5.1], p = 0.001). TAPP repair had a higher index surgery cost and higher costs associated with reoperations and readmissions compared to TEP repair.

Conclusion: Although both approaches are very safe, TAPP inguinal hernia repair had higher rates of postoperative complications, increased healthcare utilization, and higher associated costs. Future studies should be directed toward decreasing postoperative healthcare utilization in order to decrease costs in inguinal hernia repair.