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Updated: Jun 22, 2026

Point-Of-Care Ultrasound Screening for Proximal Lower Extremity Deep Venous Thrombosis
Published on: February 10, 2023
[Deep vein thrombosis in Noto Peninsula earthquake victims]
Takako Terakami1, Noriko Ohba, Eriko Morishita
1Department of Laboratory Sciences, Kanazawa University Hospital, Kanazawa 920-8641, Japan.
Abstract:
The earthquake occurred in the Noto Peninsula in the northern part of Ishikawa prefecture, Japan, at 9:25 a.m. on March 25th 2007. Medical activities for prevention of deep vein thrombosis (DVT), early detection of DVT, and early treatment of DVT were performed immediately after the earthquake on the basis of a previous report regarding earthquake disasters. This report described the conditions involved in the development of DVT. General inhabitants in shelters were examined by questionnaires, venous ultrasonography of lower limb, and blood tests. The DVT-positive rate was 10.6% (21 cases/198 cases), and the soleal vein was the most common location of DVT accounting for 71.4% of cases(20 lower limbs/28 lower limbs). Plasma levels of fibrin/fibrinogen degradation products and D-dimer in the DVT-positive group (20 cases) were significantly higher than those in the DVT-negative group(162 cases) (P<0.03). No deaths or cases of serious illness caused by DVT were reported in the earthquake. The medical activities described here were effective due to the past experience and the cooperation of many people.
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