POSSUM and Portsmouth POSSUM for predicting mortality

There is a need for an accurate measure of surgical outcomes so that hospitals and surgeons can be compared properly regardless of case mix. POSSUM (Physiological and Operative Severity Score for the enUmeration of Mortality and morbidity) uses a physiological score and an operative severity score to calculate risks of mortality and morbidity. In a previous small study it was found that Portsmouth POSSUM (P‐POSSUM; a modification of the POSSUM system) provided a more accurate prediction of mortality.

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