Prospective Assessment of Surgical Risk Using the POSSUM, P-POSSUM, Clinical Frailty Scale and Charlson's Comorbidity Index in Abdominal Surgery.

Abdominal surgery represents the most frequent activity in the surgical block. Advances in surgical techniques and improvements in postoperative care imply the need for greater control of the surgical outcomes obtained and the comparison of results between services with the same characteristics with the help of assessment scales. A prospective observational study will be carried out during 2021. All patients undergoing abdominal surgery will be included. Demographic variables, personal and surgical history, preoperative and intraoperative data, and variables related to surgery will be collected. At 30 days postoperatively, the clinical history of the patients will be reviewed and postoperative complications will be collected as well as the mortality that occurred. With these data, the POSSUM, the P-POSSUM, the Clinical Frailty Scale and the Charlson comorbidity index will be calculated.