Can POSSUM, a Scoring System for Perioperative Surgical Risk, Predict Postoperative Clinical Course?

Naoto Gotohda, Hiromi Iwagaki, Satoshi Itano, Sadayuki Horiki, Toshiya Fujiwara, Shinya Saito, Akio Hizuta, Hiroshi Isozaki, Norihisa Takakura, Norihiko Terada, Noriaki Tanaka

Research output: Contribution to journalArticlepeer-review

13 Citations (Scopus)


POSSUM, a Physiological and Operative Severity Score for the enumeration of Mortality and morbidity, is a scoring system which assesses perioperative surgical risks (Copeland GP et al.: Br J Surg, 1991, Vol 78, 356-360). The POSSUM scoring system consists of two categories of assessment to assess the risk of surgery. A 12-factor (age, cardiac status, pulse rate, systolic blood pressure, respiratory status, Glasgow Coma Score, serum concentration of urea, potassium and sodium, hemoglobin concentration, white cell count and findings on electrocardiography) and 4-grade physiological score (PS) were developed. This was combined with a 6-factor (type of surgical procedure, number of procedures, blood loss, peritoneal soiling, presence of malignancy and mode of surgery) and 4-grade operative severity score (OSS). The present paper attempts to validate it retrospectively. Postoperative hospitalization period and duration of antibiotics administration were both significantly correlated with OSS, but not with PS. These results suggest that the POSSUM scoring system is useful for predicting the postoperative clinical course.

Original languageEnglish
Pages (from-to)325-329
Number of pages5
JournalActa medica Okayama
Issue number6
Publication statusPublished - Dec 1998


  • Physiological and operative severity score for the enumeration of mortality and morbidity
  • Surgical risk

ASJC Scopus subject areas

  • General Biochemistry,Genetics and Molecular Biology


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