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東海地区31施設において,抗凝固薬である合成Xa阻害薬の市販開始前1年間(①)と開始後1年間(②)の人工膝関節置換術(①515件,②618件),人工股関節置換術/骨盤骨切り術(①592件,②586件),股関節骨折手術(①1,851件,②1,729件),脊椎手術(①1,780件,②1,944件)における深部静脈血栓症(DVT)発生率,肺血栓塞栓症(PTE)発生率,予防法を調査した.股関節骨折の術後DVTは期間②で有意に減少していた(p<0.05).他の手術では術後DVTの有意な減少は認めなかった.全手術において術後症候性PTEに有意な減少はみられなかった.抗凝固薬によるPTE予防効果の検証のためさらなる症例収集と調査が必要と思われた.
The incidence of deep venous thrombosis (DVT) and pulmonary thromboembolism (PTE) and methods of preventing them were surveyed at 31 hospitals in the Tokai area during the year before (①) and during the year after (②) the selective factor Xa inhibitor became available on the market as an anticoagulant in Japan. Total knee arthroplasty (TKA) (①515 cases, ②618 cases), total hip arthroplasty (THA)/pelvic osteotomy (①592 cases, ②586 cases), hip fracture surgery (①1,851 cases, ②1,729, cases), and spinal surgery (①1,780 cases, ②1,944 cases) were included in this survey. There was a statistically significant decrease in postoperative DVT after hip fracture surgery during the latter period (②) (p<0.05). No decreases in postoperative DVT were observed after the other surgical procedures. Nor was there any statistically significant decrease in postoperative symptomatic PTE after any of the surgical procedures. Further study is needed to elucidate the effectiveness of the anticoagulant in preventing PTE.
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