Why the study?
Does a modified 7-grade ASA physical status classification improve prediction of intra- and postoperative complications compared to the conventional 5-grade classification in surgical patients?
Does a modified 7-grade ASA physical status classification improve prediction of intra- and postoperative complications compared to the conventional 5-grade classification in surgical patients?
A modified 7-grade ASA physical status classification may offer improved preoperative risk stratification for surgical complications compared to the traditional 5-grade system.
Answers are grounded in this paper and cite their sources.
May refine preoperative risk stratification; leaves open prospective validation before practice change.
By dividing up ASA physical status (5-grade) class 2, 1933 patients were classified into 7 grades, which were grade 1a, 1b, 2a, 2b, 3, 4 and 5. Many patients were classified in grade 1a, and the distribution in each grade gradually decreased in elective cases, whereas most of patients were limited in grade 2 of ASA. On the other hand, there were more patients in grade 1b and 2a associated with some risk factors in emergency cases than those in grade 2 for ASA. Complications gradually increased from grade 1a in revised classification or 1 in ASA classification to 3 in elective cases and from grade 1a or 1 to 4 and 5 in emergency cases both in the revised and ASA classifications. Reevaluation of ASA physical status (7-grade) can provide a better grading outcome for predicting the incidence of intraand postoperative complications in surgical patients compared with the conventional ASA's.
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A 2007 study studied this question.
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