Risk Factors Affecting Survival Rates in Patients with Ruptured Abdominal Aortic Aneurysm. New Factor, Shock Time Index.

VernacularTitle:破裂性腹部大動脈りゅうの手術成績を左右する因子の検討　　とくに新しい概念であるショック時間指数を中心に
Author: Mitsunori Maeda ; Naoki Konagai ; Hiromi Yano ; Masaharu Misaka ; Tatsuhiko Kudo ; Shin Ishimaru
Publication Type:Journal Article
From:Japanese Journal of Cardiovascular Surgery 2002;31(1):24-28
CountryJapan
Language:Japanese
Abstract: We tried to identify the risk factors affecting the high mortality rates associated with ruptured abdominal aortic aneurysm (AAA). The subjects consisted of 18 patients, operated on for ruptured AAA, who were admitted to our hospital between 1992 and 1999. The preoperative factors, which were hemoglobin levels less than 9.0g/dl, creatinine levels higher than 2.1mg/dl, type 4 on the Fitzgerald classification, shock state lasting longer than 6h and a shock time index (the time from shock state onset to the beginning of operation divided by the time from complaint of abdominal pain to the beginning of operation) higher than 0.3, were associated with increased intraoperative and overall mortality rates. The postoperative factors, which were bleeding and blood transfusion more than 6, 000ml and an operating time of more than 400min, were associated with increased intraoperative and overall mortality rates. It is concluded that these risk factors were predictors of mortality and it is necessary to operate early because of the risk factors.