Postoperative Complications and Mobilization Following Major Abdominal Surgery With Versus Without Fitness Tracker-based Feedback (EXPELLIARMUS)): A Student-led Multicenter Randomized Controlled Clinical Trial of the CHIR-Net SIGMA Study Group
An erratum to this article was published (Ann Surg, 1 Jun 2025 ↗)
Authors' conclusion
Daily step goals combined with FT-based feedback had no effect on postoperative morbidity.
Study context
- Population
- Patients undergoing major abdominal surgery at 11 University Hospitals in Germanyenrolled
- Participants
- 347 patients
- Comparison
- Experimental vs Control
- Primary endpoint
- Postoperative morbidity (Comprehensive Complication Index, Comprehensive Complication Index (CCI))
- Follow-up
- 30 days
Methodological detailsmulticentre, student-led, All trial visits performed by medical students; 30-day visit by telephone and electronic questionnaires
- Multicentre
- Student-led
- All trial visits performed by medical students; 30-day visit by telephone and electronic questionnaires
Primary result
As reported in the abstract
CCI
Experimental
23
mean · SD 24
Control
22
mean · SD 22
95% CI −6.1 to 3.7; P = 0.628
Secondary outcomes
Quality of recovery, 6-minute walking test, hospital LOS, step count until POD 7
- Comparable between the 2 groups
Original publication
Postoperative Complications and Mobilization Following Major Abdominal Surgery With Versus Without Fitness Tracker-based Feedback (EXPELLIARMUS)): A Student-led Multicenter Randomized Controlled Clinical Trial of the CHIR-Net SIGMA Study Group. Ann Surg. Published 9 February 2024. doi:10.
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