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时间:2020-06-29
《高中英语 VOA常速听力2012年11月合辑(文本)New-Study-Could-Change-Treatment-For-Asthma素材.doc》由会员上传分享,免费在线阅读,更多相关内容在教育资源-天天文库。
1、VOA常速英语听力2012年11月合辑(文本):New-Study-Could-Change-Treatment-For-AsthmaCarolPearsonNovember21,2012Mostdoctorstellasthmapatientstosticktoaregimenwhentakingmedicinethathelpscontrolthisdisease.Asthmaisachronicandsometimeslife-threateninglungdiseasethataffectspeoplearoundtheworld.Thereisnocu
2、re,buttherearetreatments.Andnow,globaltreatmentguidelinesforasthmacouldchangeasaresultofastudyledbyaresearcherattheUniversityofTexasMedicalBranch.Mostadultswhohavemildormoderateasthmaaretoldtousetheirinhalerstwicedaily,eveniftheydon'thavesymptoms.Themedicineinthosecompressed-airinhal
3、ersarecorticosteroids,whichopenaperson'sairwaysanddecreasemucussoit'seasiertobreathe.Inhaledcorticosteroidsarethemostcommonandthemosteffectiveformoftherapyforasthmasufferers.Inanasthmaattack,theairwaysofthelungsbecomeinflamedandswollen.Thatcanbetriggeredbyawiderangeoffactors,somegene
4、tic,someenvironmental.Dust,airpollutionorsmokecansetoffanasthmaattack.Fallingautumnleavesandotherseasonalchangesthatputfinedebrisintheaircanalsotriggeranattack.FrankGrizzaffiknowsthisroutinewell.“TherewasaregimethatIwassupposedtofollow,itwastwopuffsinthemorningandtwopuffsintheevening
5、,”Grizzaffisaid.ThatwasbeforeGrizzaffiparticipatedinastudythatinvolvedtenacademiccentersandmorethan300adultswithmildtomoderateasthma.Doctorsevaluatedthepatientsanddeterminedthelowestpossibledoseofmedicationthatwouldcontroltheirasthma.Dr.WilliamCalhounledthestudy.“Theamountofcorticost
6、eroidthatapatientreceivedduringthetrialwasdependentupontheamountofsymptomstheyhad.Whentheyhadfewersymptomstheygotlesssteroidwhentheyhadmoresymptomstheygotmoresteroid,”Calhounsaid.Afteradjustingmedication,doctorslookedatthreedifferentwaysoftreatingthepatients.Onegroupreceivedtheiradju
7、steddoseofsteroidsandtookthemasusual.Another-2-grouphadtheirsteroidlevelsadjustedaftertakingsophisticatedbreathtestsforasthmaandathirdgroupwastoldtouseinhalersonlywhentheirsymptomsflaredup.Whattheresearchersfoundwasthatthislastgroupdidjustaswellastheothertwo.Themajordifferencewasthel
8、astgroupused
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