Impact of operation duration on short-term and long-term prognosis in patients undergoing radical colorectal surgery.

Purpose: The objective of this study was to evaluate the impact of operation duration on short- and long-term outcomes of colorectal cancer patients following surgical resection. Methods: 6224 consecutive patients who underwent radical colorectal surgery were retrospectively assessed and were divided into short operation duration group (SOD) and long operation duration group (LOD) according to the operation duration cutoff value of 110 minutes. Results: Compared with patients in LOD group, patients in SOD group had significantly lower total costs in hospital, reduced expenses for drugs and antibiotics, shorter length of stay (LOS) in hospital and in the ICU. Moreover, 5-year overall survival (OS) and disease-free survival (DFS) for patients in the SOD group were markedly higher than for patients in the LOD group. Mutivariate regression analysis indicated that longer operation duration was associated with poor prognosis, with a hazard ratio of 1.004 (1.003, 1.005) for OS and 1.005 (1.003, 1.006) for DFS. Finally, surgeons' qualifications had meaningful correlation with operation duration (r= 0.450). Conclusions: Operation duration is an independent risk factor for patients' short-term and long-term outcome after radical colorectal surgery. Improve the surgical skills of the surgeon may shorten the operation duration, and further improve the outcome for patients.