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Discriminant Equation Predicting the Perforation Status for Acute Appendicitis Patients

대한대장항문학회지 1996년 12권 1호 p.31 ~ 40
민석기 ( Min Seok-Ki ) - 동국대학교 의과대학 일반외과학교실

이준희 ( Lee Jun-Hee ) - 동국대학교 의과대학 일반외과학교실
정병욱 ( Jung Byung-Wook ) - 동국대학교 의과대학 일반외과학교실
오민구 ( Oh Min-Gu ) - 동국대학교 의과대학 일반외과학교실
배성한 ( Bae Sung-Han ) - 동국대학교 의과대학 외과학교실
박동일 ( Park Dong-Il ) - 동국대학교 의과대학 일반외과학교실
안우섭 ( Ahn Woo-Sub ) - 동국대학교 의과대학 일반외과학교실
서정욱 ( Seo Jung-Wook ) - 동국대학교 의과대학 일반외과학교실


To investigate the risk factors associated with the perforation of appendix in the appendicitis patient, we reviewed the medical records of 227 patients operated and proven histopathologically to be acute appendicitis in Kyung-Ju hospital of Dong-Guk University, from November 1, 1993 to October 31, 1994. Of 227 appendectomy patients, 62(27.3%) were perforated
The factors significant for the perforation of appendix were the age of patient, symptom duration, fever and the severity of abdominal pain, tenderness, rebound tenderness, abdominal wall rigidity(p< 0.05). The operative mortality was nil and the overall rate of postoperative complication was 3.5%. The rate of complication of perforated cases(8.1%) was significantly higher than that(2.4%) of unperforated cases and the mean hospital stay of perforated cases(11.85 dyas) was significantly longer than that(7.38 days) of unperforated cases(p<0.05). We performed discriminant analysis to predict the Perforation status preoperaively for the patients with appendicitis by inputing 4 factors significant for the perforation of appenidix such as the age of patient, symptom duration and severity of abdominal pain, abdominal wall rigidity. By using this elation, we can predict the perforation status of appendix correctly with level of 81.94% accuracy.


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