重症外傷患者における搬入時のD-dimer高値はフィブリノゲン値に関係なく予後不良を示唆する

Introduction : Elevated D-dimer levels in trauma patients are one of indicators of hyperfibrinolysis during the early phase of trauma. We hypothesized that high D-dimer levels would predict a poor outcome in severe trauma patients regardless of fibrinogen levels on arrival. Methods : Patients with m...

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Published inJournal of the Japanese Association for the Surgery of Trauma Vol. 30; no. 3; pp. 331 - 340
Main Authors 早川 峰司, 前川 邦彦, 久志本 成樹, 萩原 章嘉, 齋藤 大蔵, 佐々木 淳一, 小倉 裕司, 松岡 哲也, 植嶋 利文, 森村 尚登, 石倉 宏恭, 武田 宗和, 金子 直之, 加藤 宏, 大友 康裕, 横田 裕行, 坂本 照夫, 田中 裕, 白石 淳, 工藤 大介, 金村 剛宗, 渋沢 崇行, 萩原 靖, 古郡 慎太郎, 仲村 佳彦, 村田 希吉, 真山 剛, 矢口 有乃, 金 史英, 高須 修, 西山 和孝
Format Journal Article
LanguageJapanese
Published 一般社団法人 日本外傷学会 2016
The Japanese Association for the Surgery of Trauma
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Summary:Introduction : Elevated D-dimer levels in trauma patients are one of indicators of hyperfibrinolysis during the early phase of trauma. We hypothesized that high D-dimer levels would predict a poor outcome in severe trauma patients regardless of fibrinogen levels on arrival. Methods : Patients with more than 10 units of red cell concentrate transfusion and/or death during the first 24 hours were classified with a poor outcome. Based on cut-off values for fibrinogen and D-dimer to differentiate the outcomes were compared. Results : In a stepwise logistic regression analysis, fibrinogen and D-dimer levels were statistically significant predictors of a poor outcome. Optimal cut-off values for fibrinogen and D-dimer of 190 mg/dL and 38 mg/L, respectively. Based on these values, patients were divided into four groups : low D-dimer/high fibrinogen, low D-dimer/low fibrinogen, high D-dimer/high fibrinogen, and high D-dimer/low fibrinogen. The survival rate in the high D-dimer/low fibrinogen group was lower than in the other three groups. Moreover, the survival rate in the high D-dimer/high fibrinogen group was statistically lower than that in the low D-dimer/high fibrinogen and low D-dimer/low fibrinogen groups. Conclusions : High D-dimer levels on arrival are a strong predictor of poor outcome in severe trauma patients, regardless of fibrinogen levels.  目的 : 外傷急性期におけるフィブリノゲン (fibrinogen, 以下Fbg) 低値は予後不良を示唆する. D–dimerは線溶亢進の指標であり外傷重症度を反映するが, 予後予測におけるFbgとの関係は明らかにされていない. 今回, 搬入時のD–dimer高値がFbg値に関係なく予後不良を示唆する可能性を検証した. 方法 : Japanese Observational Study for Coagulation and Thrombolysis in Early Trauma (J–OCTET) データベースを用いて, 来院24時間以内における10単位以上の赤血球輸血, もしくは24時間以内の死亡を転帰不良と定義した. ROC曲線を用いて, 搬入時のFbg値とD–dimer値の転帰不良に対する閾値を求め, その閾値に基づいた群分けを行い比較した. 結果 : 転帰不良に対する閾値はFbg=190 mg/dLとD–dimer=38 mg/Lであった. この閾値に基づき, (1)D–dimer低値/Fbg高値, (2)D–dimer低値/Fbg低値, (3)D–dimer高値/Fbg高値, (4)D–dimer高値/Fbg低値の4群に分けた. (4)群の生存率は他の3群よりも有意に低値であった. (3)群の生存率は, (1)群および(2)群の生存率よりも有意に低値であった. 結語 : ISS16以上の成人重症外傷においては, 搬入時のD–dimer高値は, Fbg値に関係なく, 予後不良の予測因子である.
ISSN:1340-6264
2188-0190
DOI:10.11382/jjast.30.331