INTRODUCTION: Diffuse peritonitis is a serious disease. It is often addressed within urgent management of an unstable patient in shock. The therapy consists of treatment of the source of peritonitis, decontamination of the abdominal cavity, stabilization of the patient and comprehensive resuscitation care in an intensive care unit. A number of scoring systems to determine patient prognosis are available, but most of them require complex input data, making their practical application a substantial problem. OBJECTIVE: Our aim was to assess simple scoring systems within a cohort, evaluate the level of mortality, morbidity, and duration of hospital stay, followed by a comparison of the acquired data with the literature and determination of an easily implementable scoring system for use in clinical practice. MATERIAL AND METHODS: We evaluated a group of patients with diffuse peritonitis who underwent surgery in the 2015-2019 period. Medical history, surgical findings, and paraclinical examinations were used as the input for four scoring systems commonly used in practice-MPI, qSOFA, ECOG, and ASA. We compared the results between the systems and with the literature. RESULTS: Our cohort included 274 patients diagnosed with diffuse peritonitis. Mortality was 22.6%, morbidity 73.4%, with a 25.2 day average duration of hospital stay. Mortality and morbidity increased with rising MPI and qSOFA, well-established scoring systems, but also with rising ASA and ECOG, similarly to MPI and qSOFA. CONCLUSIONS: The utilized scoring systems correlated well with the severity of the condition and with predicted mortality and morbidity as reported in the literature. Simple scoring systems primarily used in other indications (i.e., ASA and ECOG) have a similar predictive value in our cohort as commonly used systems (MPI, qSOFA). We recommend them in routine clinical practice due to their simplicity.

1st Department of Surgery University Hospital Olomouc 779 00 Olomouc Czech Republic

Department of Anesthesiology Resuscitation and Intensive Care University Hospital Olomouc 779 00 Olomouc Czech Republic

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