PMID: 7335183Nov 1, 1981Paper

Presentation and preliminary results obtained with the Weighted Operative Risk Scale

Minerva anestesiologica
A Canioni

Abstract

Reflections of a biological nature on the general causes of surgical mortality point to the possibility of improving the predictive capacity of the ASA classification by introducing a test that takes account of certain features of the operation, as well as the patient's biological state. Reflections of a statistical nature also enable numerical values to be assigned to the factors involved. The test proposed is thus described as a weighted operative risk scale (WORS). The discriminatory power of the WORS was found to be appreciably more sensitive than that of the ASA classification when applied to a surgical series. It is submitted that its evaluation of both the biological and the operative components of risk makes the WORS a useful objective tool in the rational planning of operations.

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