ＤｅＢａｋｅｙ　Ｉ型急性大動脈解離術後にヘパリン起因性血小板減少症（ＨＩＴ）を合併し治療に難渋した１症例

DOI 参考文献14件
  • 國重 英之
    独立行政法人国立病院機構北海道がんセンター心臓血管外科
  • 明神 一宏
    独立行政法人国立病院機構北海道がんセンター心臓血管外科
  • 石橋 義光
    独立行政法人国立病院機構北海道がんセンター心臓血管外科
  • 石井 浩二
    独立行政法人国立病院機構北海道がんセンター心臓血管外科
  • 岡 潤一
    独立行政法人国立病院機構北海道がんセンター心臓血管外科

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タイトル別名
  • A Case of Heparin-Induced Thrombocytopenia following Surgery for DeBakey Type I Acute Aortic Dissection

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A 73-year-old man underwent ascending aortic replacement and F-F crossover bypass for acute aortic dissection with right leg ischemia. He was treated postoperatively for acute renal failure due to myonephropathic metabolic syndrome (MNMS) with continuous hemodiafiltration. He suffered from acute graft occlusion and brain infarction on postoperative day (POD) 3. Although recovery of organ functions was observed, an unexpected decrease in platelet count occurred rapidly below 1.1×104/μl on POD 6. We suspected heparin-induced thrombocytopenia (HIT) and all heparin administration was halted and argatroban was initiated at a dose of 0.2 μg/kg/min, with titration to achieve an activated partial thromboplastin time (APTT) of 1.5-3.0 times the initial value not to exceed 100 sec. The platelet factor 4-reactive HIT antibody was positive and definite diagnosed of HIT was made. Administration of warfarin started after the platelet count recovered to 10.0× 104/μl on POD 36. Awareness of the clinical features and different presentations of HIT are essential for preventing severe complications associated with this disease.

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