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01.09.2009 | Ausgabe 9/2009

World Journal of Surgery 9/2009

An Evaluation of Morbidity and Mortality in Oncologic Gastric Surgery with the Application of POSSUM, P-POSSUM, and O-POSSUM

Zeitschrift:
World Journal of Surgery > Ausgabe 9/2009
Autoren:
Alexis Luna, Pere Rebasa, Salvador Navarro, Sandra Montmany, David Coroleu, Joan Cabrol, Oscar Colomer

Abstract

Objective

Evaluation of surgical results observed in oncologic gastric surgery with reference to estimation of risks through POSSUM (Physiological and Operative Severity Score for the enUmeration of Mortality and morbidity), P-POSSUM (Portsmouth POSSUM), and O-POSSUM (regression model based on the POSSUM and P-POSSUM, especially designed for gastric and esophagus surgery).

Methods

A prospective follow-up of a cohort of 106 consecutive patients, gastrectomized because of gastric cancer. The variables studied were: age, sex, technical surgery, American Society of Anesthesiologists (ASA) score, the Charlson comorbidity index, morbidity, and mortality.

Results

From January 2004 to April 2008, 131 patients were operated on for gastric neoplasia. Of these, 28 patients were excluded: 5 because of nonstandard gastrectomy, 17 because of staging laparoscopy or unresectable cancer after laparotomy, and 3 because of palliative gastroenteroanastomosis; 106 patients were included. We performed 38 total gastrectomies, 65 distal gastrectomies, 2 esophagogastrectomies, and 1 proximal gastrectomy. The mean age was 68 years (standard deviation (SD) = 12.1; range, 34–85 years). Associated comorbidity (Charlson) was 5.4 (SD = 2.7; range, 2–16); ASA 1 at 1.9%; ASA 2 at 36.8%; ASA 3 at 43.4%; and ASA 4 at 17.9%. Expected morbidity, according to POSSUM was 46.7%; observed morbidity was 50.5%. Morbidity ratio observed/expected was 1.08. Expected mortality, according to POSSUM = 13%, according to P-POSSUM = 4.9%, and according to O-POSSUM = 12.1%. Observed mortality was 7.8%. Mortality ratio observed/expected according to POSSUM, P-POSSUM, O-POSSUM was 0.6, 1.6, and 0.6, respectively. Morbidity results were within the confidence interval of the POSSUM estimation. Our results show lower mortality than the POSSUM and the O-POSSUM estimation (P < 0.001) and higher mortality regarding P-POSSUM estimation (P < 0.001).

Conclusions

The control systems of risk allow us continuous evaluation of our results and objective comparison to other teams. Compared with the POSSUM scoring systems, our series showed quality improvement (morbidity and mortality) over time.

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