title: [Presentation and preliminary results obtained with the Weighted Operative Risk Scale].
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.
mesh_terms: D006801:Humans; D008962:Models, Theoretical; D011183:Postoperative Complications; D012306:Risk; D013514:Surgical Procedures, Operative / Q000009:adverse effects*
vernacular_title: Presentazione e primi risultati di una scala ponderata di rischio operatorio.