Abstract
Background
Laparoscopic approaches to colorectal surgery are known to accelerate recovery but the effect on postoperative mortality is uncertain. The purpose of this study was to determine whether differences exist in postoperative mortality between patients undergoing laparoscopic and open colorectal surgery in a group of international healthcare institutions.
Methods
Administrative data from 30 worldwide institutions were searched for patients who underwent elective colorectal surgical resection between January 2007 and December 2011. The primary outcome measure was 30-day-in-hospital mortality rate. Secondary outcome measures were 30-day readmission rate, length of stay, and 30-day reoperation rate.
Results
There were 30,369 (20,641 colonic and 9728 rectal) resections recorded over the 5 years. Eight thousand eighty-six were laparoscopic (26.6 %) and 22,283 (73.4 %) were open. Following propensity-score matching of the laparoscopic and open cohorts, mortality was 0.5 % following laparoscopic colectomy and 1.2 % after conventional surgery (P < 0.001). After adjusting for differences in preoperative risk factors including gender, age, comorbidity, type of surgery and diagnosis, by matching on propensity score, laparoscopic surgery was a strong determinant of reduced 30-day mortality (odds ratio 0.44; 95 % confidence interval 0.31–0.62; P < 0.001), reduced hospital stay (odds ratio 0.42, 95 % confidence interval 0.39–0.45; P < 0.001), reduced readmission (odds ratio 0.78, 95 % confidence interval 0.71–0.86; P < 0.001) and reduced re-operation (odds ratio 0.75, 95 % confidence interval 0.65–0.76; P < 0.001).
Conclusions
Minimally invasive colorectal surgery is associated with reduced in-hospital mortality when compared with conventional techniques. This finding is consistent across international healthcare institutions and supports efforts to disseminate laparoscopic skills.
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Acknowledgments
The authors thank The Gastrointestinal Goal Group of Dr Foster Global Comparators: David C. Chang, UC San Diego Medical Center, United States of America; Stephen Dalton, Royal United Hospital, Bath, United Kingdom; Alexander Engel, Royal North Shore Hospital, Sydney, Australia; Omar Faiz, St Marks Hospital and Academic Institute, United Kingdom; Edward Livingston, Southwestern Medical School and University of Texas at Arlington, United States of America; Najjia Mahmoud, University of Pennsylvania, United States of America; Jennifer L. Rabaglia, UT Southwestern Medical Center, United States of America; Sonia Ramamoorthy, Rebecca and John Moores Cancer Center, United States of America; Baljit Singh, University Hospitals Leicester, Leicester, United Kingdom; Rob Tollenaar, Leiden University Medical Center, The Netherlands; Mark I. van Berge Henegouwen, Academic Medical Center, Meibergdreef, Amsterdam, The Netherlands. Aruna Munasinghe is funded by a research fellowship grant from Cancer Research UK and the National Institute for Health Research (NIHR) Biomedical Research Centre based at Imperial College Healthcare NHS Trust and Imperial College London. The views expressed are those of the authors and not necessarily those of the NHS, the NIHR or the Department of Health.
Disclosures
Drs Munasinghe, Singh, Mahmoud, Joy, Chang, Penninckx and Faiz have no conflicts or financial ties to disclose.
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On Behalf of The GI GOAL GROUP Dr Foster Global Comparators (GC) Project, Dr Foster Intelligence in association with the Dr Foster Unit at Imperial College London.
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Munasinghe, A., Singh, B., Mahmoud, N. et al. Reduced perioperative death following laparoscopic colorectal resection: results of an international observational study. Surg Endosc 29, 3628–3639 (2015). https://doi.org/10.1007/s00464-015-4119-8
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DOI: https://doi.org/10.1007/s00464-015-4119-8