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Thebodycreatesbloodclotstohelpstopbleedingandhelpwoundsheal（伤口愈合）.Forexample,scabs（痂）arebloodclotsontheskinthatformtostopbleedingfromacutorinjury.
Clotsalsoformwhenwehaveinjuriesinsidethebody.Mostofthetime,thebodywillgetridofthebloodclotoncetheinjuryorwoundheals.However,sometimestheseclotscancauseproblems.
Bloodclotsforminbloodvesselswithinthebody.Bloodclotsinveinsclosetotheskinareusuallynotserious.Howeverwhenbloodclotsformindeepveins（深静脉）ofthelegs,hips,pelvis（骨盆）,orrarelyinthearms,neckorchest,theycanbedangerousandrequireimmediatemedicalattention.
Anotherwordforveinsisvenous（静脉）.Amedicaltermforabloodclotisathrombus（血栓）.Whenthisthrombusorbloodclotbreaksoff（破裂）andtravelsfromoneveintoanotherpartofthebody,itiscalledanembolus.
Therefore,VTEstandsforvenousthromboembolism（静脉血栓栓塞）.AclotwhichformsinadeepveininthebodyiscalledaDVTordeepveinthrombosis（深静脉血栓）.AclotthatbreaksofffromadeepveininthebodyandtravelstothelungsiscalledaPEorapulmonaryembolism（肺栓塞）.
MostDVTsareclotsthatforminveinsinthelegs,hipsorpelvisarea.DVTscansometimesforminthearms,neck,orchestarea.
Thesedeepclotscloguptheveinsandslowdownthebloodflow（血流）,whichcancausemanysymptoms.
WarningsignsofapossibleDVT,orclotinadeepveininclude:
可能的DVT、深静脉血栓的警告信号包括：
深静脉血栓的警告信号paininonelegorarm
一只腿或手臂疼痛
swelling(usuallyinonelegorarm)
肿胀（通常在一条腿或手臂中）
skinthatisredornottheusualcolor
皮肤是红色或非通常颜色
and/orwarmthintheareathathastheswelling
和/或有肿胀部位的发热
IfyouhavehadanyofthesesignsofDVT,youshouldseeadoctorrightaway.Ofnote,somepeoplewithDVThavenosignsorsymptoms.
Whenabloodclotbreaksoffandmovestothelungs,itiscalledapulmonaryembolism（肺栓塞）orPE.Thisisaseriousconditionandrequiresrapidmedicalattention.Youshouldgetemergencyhelp.
肺栓塞表现ifyouhaveanyofthesewarningsignsofabloodclot,orPE,inyourlungs:
肺部出现血块
troublecatchingyourbreathorbreathingfastfornoreason;
无缘无故地呼吸困难或呼吸急促
paininyourchest
胸部疼痛
(whichmaybeworsewhentakingadeepbreath);
（深呼吸时可能会更糟）
afastheartbeatfornoreason;
无缘无故地快速跳动
dizziness,fainting,orpassingout;
头晕，晕厥或昏倒
and/orcoughingupblood.
和/或咳血
Abigclotinthelung,orPE,cankeepbloodfromgettingtothelungs,causehearttrouble,andmaybedeadly.Iftheclotinthelungsisrecognizedandyougettherightcare,youcanrecoverfromaPE.Damagetothelungsbyaclot,orPE,cancausescarringofthelungbloodvesselsorotherpartsofthelung.
Dangerousbloodclotscanhappentoanyone,buttworiskfactorsmakethemmorelikelytohappen:
有两个危险因素使它们更有可能发生：
主要危险因素notmovingforalongtime,suchasonalongtrip
长时间不动,例如长途旅行
orwhenstayinginbedbecauseyouaresickorhurt;andstayinginthehospitalorhavingsurgerysuchashiporkneesurgery.
或因生病或受伤而卧床休息时；进行髋部或膝盖手术等手术
Otherriskfactorsinclude:
其他危险因素包括：
其他危险因素smoking;
抽烟;
beingoverweight;超重;havinganinjuryortrauma;
受伤或创伤；
havingfamilymemberswhohavehadbloodclots;
家庭成员有血栓的;
havingcancer;
患有癌症；
takingbirthcontrolpills;
服用避孕药；
havingababy;
生孩子
and/orbeingolder.
和/或变老
Themoreoftheseriskfactorsyouhave,themorelikelyyouaretodevelopVTEbloodclots.Ifyoususpectadangerousbloodclot,seeyourdoctor,whowillaskaboutyoursymptomsandexamineyou.
总结pain,swelling,rednessorwarmthinoneleg
一只腿有疼痛，肿胀，发红或发热
troublebreathing,
呼吸困难
paininyourchest,
胸口疼痛
fastheartbeat,
快速的心跳
dizzinessorfainting,
头晕或昏厥
orifyoucoughupblood,
咳血
Differenttestsareusedtofindclotsinthebody.
使用不同的测试来发现体内的血块。
检查Anultrasoundusessoundwavestoformapictureoftheclotinsidetheveinsofyourbody.
超声波使用声波，形成体内血管内血块的图像。
AbloodtestforD-dimerindicates
D-二聚体的血液检查
ifyourbloodcontainsachemicalsubstancecalledD-dimer,whichclotsleavebehindwhentheybreakup.
如果您的血液中含有一种称为D-二聚体的化学物质，凝块分解后留下的物质。
