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Observational Study
. 2023 Jan 9;408(1):14.
doi: 10.1007/s00423-023-02766-y.

Inguinal hernia treatment in Switzerland: inpatient vs. outpatient setting - HerStAmb Study (prospective observational two-centre comparative study)

Michal Ziga  1   2   3 , Laurin Burla  4 , Adrienne Imhof  5 , Thomas Gürtler  4 , Markus Weber  4
Affiliations
Observational Study

Inguinal hernia treatment in Switzerland: inpatient vs. outpatient setting - HerStAmb Study (prospective observational two-centre comparative study)

Michal Ziga et al. Langenbecks Arch Surg. .

Erratum in

Abstract

Purpose: Since 01/2018, AVOS (ambulant vor stationär = outpatient to inpatient) regulation has been progressively implemented in hernia surgery in Switzerland. The aim of this prospective, observational, two-centre comparative study was to compare the outcome of outpatient and inpatient post-operative care in terms of AVOS by examining the re-admission rate, complication rate and quality of life in patients with primary unilateral inguinal hernia repair.

Methods: The study ran between 01/2019 and 04/2020 and included 237 patients with a primary unilateral inguinal hernia. Treatment setting was decided according to AVOS guidelines. Primary endpoint was re-admission rate within 6 weeks postoperatively. Secondary endpoints were the complication rate and patient outcome (quality of life) at 6 weeks follow-up postoperatively, as measured by the Short Form 36 Health Survey Questionnaire (SF-36).

Results: Complications occurred in 11 (14%) inpatient patients, but none required re-admitting for revision until follow-up at 6 weeks after discharge. In the outpatient group, there were 27 (17%) complications reported, while 6 (4%) of these patients crossed over to the inpatient group immediately after surgery. None of the other complications required re-admission until follow-up at 6 weeks. No significant relationship between treatment setting and number of complications/re-admission rate (p=0.458, p=0.061) was observed. The mean outcome (SF-36) between the treatment groups was not significantly different (p=0.16-0.856).

Conclusion: In terms of AVOS selection criteria in Switzerland, primary unilateral inguinal hernia can be safely treated in both treatment settings. Re-admission rates, complications and quality of life do not significantly differ. Day surgery in terms of AVOS might be as effective and efficient, both from the patient's perspective and that of the institution.

Trial registration number: NCT05234242.

Keywords: AVOS; Complications; Inguinal hernia treatment; Inpatient; Outcome; Outpatient; Re-admission.

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