下肢深部静脈に対する弾性ストッキングの血流増加効果 [in Japanese] Effect of Graduated Compression Stockings on Deep Venous Blood Velocity [in Japanese]
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要約：健康ボランティア15 名を対象に，弾性ストッキング（以下ES）着用前および着用20 分後，40 分後における膝窩静脈の最高血流速度（以下PV）および血管径（以下VD）について測定した．ES は身長，足関節周囲径および脹脛周囲径を基準にサイズを選択した．VD は長軸断面の血管径を，PV はパルスドプラ法でそれぞれ連続3 回測定し，平均値を算出した．PV は着用前と比べES 着用20 分後，および40 分後で有意に増加した（P<0.01）．VD はES 着用20 分後および40 分後で有意な減少を認めた（P=0.03）．ES 着用は安静座位の膝窩静脈でVD を減少させ，かつPV を上昇させることがわかった．
Graduated compression stockings (GCS) are widely used to prevent venous thromboembolism (VTE) caused by prolonged immobility owing to lower limb venous stasis. The effects of GCS on venous blood velocity have not yet been established. We investigated whether deep vein blood flow increased with the use of properly fitted GCS (below-knee type). Fifteen healthy adult participants were examined, and Doppler ultrasound measurements of popliteal venous blood flow were recorded on one leg over a 40-minute period. The primary outcome was time-averaged peak velocity (PV) in the popliteal vein at 20 and 40 min, and the secondary outcome was the change in vein diameter (VD). Results: PV of the popliteal vein increased with the use of GCS at both 20 and 40 min as compared to that before using GCS (6.4 ± 2.8 cm/s to 7.5 ± 3.1 cm/s at 20 min and to 7.5 ± 2.5 cm/s at 40 min) (P<0.001). Moreover, VD decreased significantly, after GCS use (8.8 ± 1.7 mm to 8.3 ± 1.8 mm at 20 min and to 8.3 ± 2.0 mm at 40 min) (P=0.034). GCS use increases lower limb venous blood velocity by decreasing VD during prolonged seated immobility, and it may reduce the risk of VTE in cases of prolonged seated immobility.
- The Japanese Journal of Phlebology
The Japanese Journal of Phlebology 25(3), 326-331, 2014
Japanese Society of Phlebology