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Surgery

P-POSSUM Mortality Equation (Prytherch) calculator

Enter the published formula inputs below to calculate and interpret this score.

Clinical inputs

Result

Complete all required inputs to calculate the score.

Formula inputs

  • POSSUM physiological score (PS)Accepted range: 12 to 88
  • POSSUM operative severity score (OS)Accepted range: 6 to 48

Primary source

Prytherch DR et al. POSSUM and Portsmouth POSSUM for predicting mortality. Br J Surg (1998)

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