The changes of venous blood before and after travel by high speed train

VernacularTitle:正常人乘高铁前后静脉血液变化的研究
Author: Luyuan NIU ¹ ; Fuxian ZHANG ; Huan ZHANG ; Mingyi ZHANG ; Tao QIU
Author Information

1. 首都医科大学附属北京世纪坛医院血管外科
Keywords: Venous thrombus embolism; Travel medicine; Economy class syndrome; Traveller's thrombosis
From: Chinese Journal of General Surgery 2017;32(9):758-762
CountryChina
Language:Chinese
Abstract: Objective To prospectively study the changes of venous blood before and after travel by high speed train.Method From December 2013 to August 2015,following the appropriate inclusion and exclusion criteria,50 volunteers and 20 high speed rail crew member were recruited.Blood samples were collected,and lower extremity venous ultrasound was performed in general information,and recorded activities (including walking distance,number of steps,etc.) and drinking water volume,before and after travel.Results After 5 hours in the train,in all the participants venous blood coagulation indicators were on the rise.Doppler ultrasound examination showed:the lower extremity venous diameter increased,the venous return slowed down,the leg circumference diameter increased (all P ＜ 0.05).High speed rail crew had increased leg circumference (P ＜ 0.05).Conclusion 5 hours high-speed train travelling increases the likelihood of economy class syndrome.High speed rail crew working 10 hrs are with increased circumference of the lower extremity veins.