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Decision support system minimizing the risk of post-operation complications after surgeries


If colorectal cancer requires surgical intervention, it is performed in either the laparoscopic or open method. It is desirable to choose the best methodology for each patient. We first consider the POSSUM model to estimate the probability of potential complications. The model was not found accurate enough, so the logistic regression was used to find new parameters of the POSSUM model. This new model was not accurate enough as well. A decision was made to decompose the POSSUM model to its 18 core variables and try to find the ones which are statistically significant. Using the method of logistic regression we isolated the variables providing us with the most information and based a new model on them. The quality of this model is further going to be discussed and a simple formula is provided to decide on the optimal operation technique while minimizing the risk of post operation complications.

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  1. age, cardiac signs, respiratory signs, systolic blood pressure, pulse, Glasgow coma scale, hemoglobin, white blood cell, urea, sodium, potassium, ECG, operative severity, multiple procedures, total blood loss, peritoneal soiling, cancer, mode of surgery

  2. Different models can give different recommendations. The models Os – POSSUM2 (l) and Os – POSSUM2 (o) were created on the basis of data collected in the University hospital Ostrava. The recommendations following from these are valid for patients of this hospital only.


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This paper is based on cooperation between University Hospital Ostrava and VŠB – Technical University of Ostrava. This work was supported partially by the Faculty of Electrical Engineering and Computer Science VŠB – TU Ostrava (project No. SP2016/18) and partially by The Ministry of Education, Youth and Sports from the National Programme of Sustainability (NPU II) project “IT4Innovations excellence in science - LQ1602”.

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Correspondence to Radim Briš.

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Jahoda, P., Briš, R., Běloch, M. et al. Decision support system minimizing the risk of post-operation complications after surgeries. Health Technol. 6, 149–156 (2016).

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  • Colorectal cancer
  • Logistic regression
  • POSSUM model
  • Decision on surgery technique