Circulation Journal
Online ISSN : 1347-4820
Print ISSN : 1346-9843
ISSN-L : 1346-9843
Risk Factors and Prevalence of Deep Vein Thrombosis After the 2016 Kumamoto Earthquakes
Koji SatoKenji SakamotoYoichiro HashimotoKazuhiko HanzawaDaisuke SuetaSunao KojimaMasaya FukudaHiroki UsukuFumie KiharaHiroshi HosokawaYohei NagaiMakoto NakajimaYoshiharu SaitoKayoko SakaiSumio MasunagaShinji TanakaKazuteru FujimotoKenji MorihisaKatsuo NodaKazuhiro NishigamiKohei NagataKoichiro FujisueNoriaki TabataYukio AndoKenichi TsujitaHisao OgawaSeiji Hokimotoon behalf of the KEEP Project
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Article ID: CJ-18-1369

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Abstract

Background: After previous earthquakes, a high prevalence of deep vein thrombosis (DVT) has been reported. We examined DVT prevalence and risk factors in evacuees of the Kumamoto earthquakes by performing mobile DVT screening at various evacuation centers around the epicenter.

Methods and Results: For 1 month after the Kumamoto earthquake on 14 April 2016, mobile DVT screening using portable ultrasonography (US) was performed at 80 evacuation centers. Questionnaires, physical examination, and US of the lower limb were carried out, and simple D-dimer measurements were undertaken for DVT-positive examinees. The total number of examinees was 1,673, of whom 178 (10.6%) had DVT. The prevalence of DVT seemed to be gradually decreasing in the screening period, but age, use of sleep medication, prevalence of hypertension, dyslipidemia, leg edema, and lower leg varix were significantly higher in the DVT positive group than in the negative group. On multivariable logistic regression analysis, high age (≥70 years old), use of sleep medication, lower leg edema, and lower leg varix were significant predictors of DVT. In examinees with these 4 predictors, the DVT positive rate was 71.4%.

Conclusions: In the first month after the Kumamoto earthquakes, DVT prevalence and severity, evaluated on D-dimer level, decreased with the passage of time. Mobile DVT screening indicated significant factors stratifying DVT risk in the evacuees.

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© 2019 THE JAPANESE CIRCULATION SOCIETY
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