Scandinavian journal of gastroenterology · 2007
Comparison of outcome of POSSUM, p-POSSUM, and cr-POSSUM scoring after elective resection of the sigmoid colon for carcinoma or complicated diverticular disease.
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Oomen Joannes L T, Cuesta Miguel A, Engel Alexander F
Аннотация
OBJECTIVE: To compare POSSUM, p-POSSUM, and cr-POSSUM-predicted mortalities with the observed postoperative mortality in patients undergoing elective sigmoid colectomy for diverticular disease (n=121) or carcinoma (n=120).
MATERIAL AND METHODS: The physiologic and operative severity score for the enumeration of mortality and morbidity (POSSUM) was used to identify patient- or disease-related risk factors and to calculate expected mortalities.
RESULTS: Patients with carcinoma had significantly higher POSSUM scores, but the observed mortality (1.7%) was lower than that in the diverticular disease group (3.3%). In the carcinoma group, mortality was over-predicted by all the POSSUM systems. In diverticular disease, POSSUM over-predicted mortality while p-POSSUM and cr-POSSUM under-predicted mortality. In the whole group, POSSUM over-predicted mortality. P-POSSUM and cr-POSSUM predicted mortality accurately: observed:expected (O:E) ratio 0.83. Replacing the score for malignancy with a minimum score of 1 gave overall O:E ratios of 0.37 (POSSUM), 1.04 (p-POSSUM), and 0.93 (cr-POSSUM).
CONCLUSIONS: In a group of patients who underwent elective resection of the sigmoid colon for carcinoma or diverticular disease, postoperative mortality was predicted accurately by p-Possum and cr-POSSUM, especially when used without a score for malignancy. None of the POSSUM scores were predictive of disease-specific mortality.
MATERIAL AND METHODS: The physiologic and operative severity score for the enumeration of mortality and morbidity (POSSUM) was used to identify patient- or disease-related risk factors and to calculate expected mortalities.
RESULTS: Patients with carcinoma had significantly higher POSSUM scores, but the observed mortality (1.7%) was lower than that in the diverticular disease group (3.3%). In the carcinoma group, mortality was over-predicted by all the POSSUM systems. In diverticular disease, POSSUM over-predicted mortality while p-POSSUM and cr-POSSUM under-predicted mortality. In the whole group, POSSUM over-predicted mortality. P-POSSUM and cr-POSSUM predicted mortality accurately: observed:expected (O:E) ratio 0.83. Replacing the score for malignancy with a minimum score of 1 gave overall O:E ratios of 0.37 (POSSUM), 1.04 (p-POSSUM), and 0.93 (cr-POSSUM).
CONCLUSIONS: In a group of patients who underwent elective resection of the sigmoid colon for carcinoma or diverticular disease, postoperative mortality was predicted accurately by p-Possum and cr-POSSUM, especially when used without a score for malignancy. None of the POSSUM scores were predictive of disease-specific mortality.