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2022 Fiscal Year Final Research Report

Efficacy and safety of prehospital administration of tranexamic acid (TXA) for trauma patients

Research Project

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Project/Area Number 19K18367
Research Category

Grant-in-Aid for Early-Career Scientists

Allocation TypeMulti-year Fund
Review Section Basic Section 55060:Emergency medicine-related
Research InstitutionNippon Medical School

Principal Investigator

Nakae Ryuta  日本医科大学, 医学部, 講師 (20786975)

Project Period (FY) 2019-04-01 – 2023-03-31
Keywords外傷 / 凝固障害 / トラネキサム酸 / 病院前救急医療
Outline of Final Research Achievements

There were 34 patients in the prehospital tranexamic acid group and 1302 in the historical control group. Each of the 34 patients were matched, and the standardized mean differences in age, sex, GCS score, AIS, and ISS were less than 0.1.
The primary endpoint of death at 28 days was 17.7% in the prehospital tranexamic acid group and 35.3% in the historical control group, with no significant difference (p = 0.10). The secondary endpoint of modified Rankin Scale 0-2 at 3 months was 44.1% in the prehospital tranexamic acid group and 47.1% in the historical control group, with no significant difference (p = 0.81).

Free Research Field

外傷

Academic Significance and Societal Importance of the Research Achievements

凝固線溶マーカーの経時変化では、Fibrinogenは病院前トラネキサム酸投与群の方が受傷1日後から高値で推移しており、急性期を過ぎると凝固が亢進することが示唆され、血栓塞栓性合併症が多くなることの根拠となり得ると考えられた。また、D-dimerは病院前トラネキサム酸投与群の方が受傷1時間後は高値であったにも関わらず、受傷3時間後、6時間後は低値で推移しており、PAI-1は受傷6時間後で低値であり、病院前トラネキサム酸投与により受傷3時間後をピークとする線溶亢進が抑制されると考えられた。
凝固線溶マーカーの推移から、病院前におけるトラネキサム酸投与の影響が明らかとなった。研究の継続が必要である。

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Published: 2024-01-30  

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