What do AHI, RERA, Arousal and RDI mean?

Apnea Hypopnea Index. It's the average number of combined apneas and hypopneas per hour. It is most often used to determine the severity of a person's sleep ... HomeTheSleepBlogWhatdoAHI,RERA,ArousalandRDImean?WhatdoAHI,RERA,ArousalandRDImean?AfterYourSleepStudyForDoctor'sOfficesWhatdothesetermsmeaninasleepstudyreport?WhichoneisusedbyinsurancestodetermineapprovalforCPAPtherapy?Learnaboutthedifferenttypeofrespiratoryevents,howtheyarescoredandwhattheymeanfortreatmentoptionsandinsurancecoverageofCPAPtherapy.WhatisAHI?ApneaHypopneaIndex. It’stheaveragenumberofcombinedapneasandhypopneasperhour.Itismostoftenusedtodeterminetheseverityofaperson’ssleepapnea.Whatisanapnea?Anapneaiswhenyourbreathingstopsforatleasttensecondswhilesleeping.Thefigurebelowshowshowthesensorsusedduringasleepstudymeasureyourbreathing.Thiscriteriaisusedforscoringasleepstudy.Thisisthepartoftheprocesswhereatechnicianreviewsthedatathatisrecordedfromyourovernightsleepstudy.Differenttypesofapneas:Apnea:Thereisadropinthesignalsshownaboveofatleast90%foratleast10seconds.Obstructiveapnea:Meetsthecriteriaofanapnea(above)andcontinuedorincreasedefforttobreatheisnoted(theeffortisduetoanobstructionoftheairway,learnmorehere).Centralapnea:Anapneawithnoefforttobreathemadeduringtheentireperiod(thisisaneurologicalissue,learnaboutcentralsleepapneahere).Mixedapnea:Anapneawithnoefforttobreatheinthebeginningoftheeventfollowedbyefforttobreatheinthesecondpartoftheevent.Whatisahypopnea?Ahypopneaisasignificantreductioninairflowwhilesleeping (notacompletestop)thatcausesadropinbloodoxygensaturationandthenanarousal.Twowaystocalculatehypopneas(basedonMedicare,seelinkinsources):(1) 50%reductioninairflowwith3%bloodoxygendesaturation(2) 30%reductioninairflowwith4% bloodoxygendesaturationWhatisaRERA?RespiratoryEffortRelatedArousal.Aneventthatcausesanarousaloradecreaseinoxygensaturation,withoutqualifyingasanapneaorhypopnea. Anarousaliswhenthesensorsmeasuringyourbrainactivity,calledEEG,showthatyourbrainwaves changeto alphawaveform.Thismeansyou’vewokenupevenifyoudon’trealizeit.Itistherepeatedwakingofyourbrainasaresultofarespiratorydisturbancelastingatleast10secondsthatcausesthedamagefromsleepapnea,regardlessofthetypeofeventthatisoccurring orwhetherthe breathingpauseisafullpauseorapartialpause.Therefore,manysleepcentersandinsurancecompaniesarestartingtorecognizeRERAasanindicatoroftheseverityofdisease.WhatisRDI?RespiratoryDisturbanceIndex.Thisisyourcombinednumberofapneas,hypopneas,andRERAsperhourofsleep.Physicianswhousethisscaletypicallyfollowthesameguidelinesthatareusedfortheapnea/hypopneaindex(AHI).MedicaredefinesRDIastheaveragenumberofapneasandhypopneas(soit’sreallythesameasAHI),theydonotincludeRERAs.Mostcommercial insurancesrefertotheAASMstandardswhichincludesapneas,hypopneasorRERAs. Whatismild,moderateorseveresleepapnea?Asdetailedabove,AHIhasbeenthetraditionalmeasureusedtodeterminetheseverityofsleepapnea;however,manyinstitutionsandinsurancesarelookingatRERAsbecause anyrespiratoryeventthatlastsatleast10secondsandcauses anarousalcancausedamageandshouldbetreated.ThechartbelowlistsAHIcriteria butRERAshouldalsobeconsidered.None/Normal:Almosteveryoneexperiencestheoccaisional apnea,sohavinglessthan5oftheseeventsperhourisconsiderednormalandnotreatmentisrecommended.MildSleepApnea:CPAPisnotusuallyrecommendedasthefirstoptionfortreatingmildsleepapnea.Otherinterventions,suchasweightloss,useofpositionaltricks(ifsleepapneaoccursprimarilywhilesleepingsupine,oronyourback),improvementsinsleephygieneandoralappliances aretypicallyrecommended(learnmoreaboutCPAPalternativeshere).ModerateandSevereSleepApnea:CPAPtherapyisusuallyrecommended.MostinsurancecompanieswillauthorizepaymentforCPAPifyourAHIismoderatetosevere(learnabouthowCPAPtherapyworkstotreatsleepapneahere). Foramorein-depthlookatthetermsandmeasurementsfoundinsleepstudies,downloadourGuidetoUnderstandingSleepStudyResults.DownloadtheGuideSources:http://healthysleep.med.harvard.edu/sleep-apnea/diagnosing-osa/understanding-results https://www.cms.gov/medicare-coverage-database/details/nca-decision-memo.aspx?NCAId=19&fromdb=truehttp://www.aasmnet.org/scoringmanual/Otherpostsyoumayfindinteresting:WhichDoctorShouldITalktoAboutmySleepProblems?HowMuchwillaSleepStudyCostMe?TheLinkBetweenSleepApneaandDiabetesHowDoesSleepApneaAffecttheHeart?JuliaRodriguezJuliajoinedAdvancedSleepMedicineServices,Inc.in2011withabackgroundinsales,marketingandcustomerservice.Sheiscurrentlythevicepresidentofmarketingandoperationsandenjoystheopportunitytoeducateandinteractwiththoselookingtoimprovetheirhealththroughbettersleep.CommentsJeanKruckReplyPostedonMarch10,2018IhaverecentlycommencedonCPAP–(5weeks)IhavebeenreadingthemeaningoftermsandabbreviationsusedIaminterestedingettingacopyof-GuidetoUnderstandingSleepstudyResults–2pagesbutcannotdownloadit.IwouldbegratefulifyoucouldemailmeacopyRegardsJeanMartinaChiefReplyPostedonApril03,2018Ihavecheckedyourwebsiteandi’vefoundsomeduplicatecontent,that’swhyyoudon’trankhighingoogle’ssearchresults,butthereisatoolthatcanhelpyoutocreate100%uniquecontent,searchfor;boorfe’stipsunlimitedcontentMolly-MinMaoReplyPostedonMarch19,2020CouldyouprovideacurrentlinkofMedicarerule“50%reductioninairflowwith3%bloodoxygendesaturation”?BecauseIonlyknewtheruleof30%reductioninairflowwith4%desats.thanksverymuchHiemstraReplyPostedonJune05,2020ThanksforsavingmylifeLynneJaffeReplyPostedonAugust15,2020Ifoundthisinformationveryhelpful;however,thereisnohyperlinktodownloadtheguide,soitisnotavailable.CarolJacksonReplyPostedonSeptember11,2020Ididanin-homesleepstudyandwasdiagnosedwithMildSleepApnea.(AHIof13.4).ThestudyrecommendsTherapeuticCPAPtritation.DoesMedicarerequirethissecondstudy?Ithoughtitwasseparatefromthediagnosisandonlyneededtodeterminepressuresettingsonmymachine.Thankyou.FitnessArticlesReplyPostedonAugust07,2021Coolblog.Thanksaton!!!JewelsJadeReplyPostedonAugust10,2021Fabulousblogpost.Pleasekeepsharing.SEOBlogsReplyPostedonAugust14,2021Greatjob.thankyou..PersimmonFruitReplyPostedonSeptember03,2021Wow.coolblog.pleasekeepitup.MohamedBenelachhabReplyPostedonNovember11,2021estoyinteresadoenobtenerinformaciondelaApneaDMZABOReplyPostedonJanuary16,2022Firstoffaveryinformativeblog/post.Thankyouforthat.I’vebeenonaBi-Papmachinefor3+yrsandit’sgoingwell.ButifyouwanttotakeyoursleepapneaknowledgeagiantstepfurtherthanIsuggestyougotoSLEEPFILES.COMThisiswhereyoudownloadyournightlysleepinformationoffofyourSDcardthat’sinyoursleepmachine/deviceanditwillshowyouchartsofyourlastnightssleepthatwillhelpyoubeabletotalkwithyourdoctorabout.It’sknownasOSCARandit’sabsolutelySAFETODOWNLOADONYOURCOMPUTER.ANDITSALSOFREEOFCHARGETODOWNLOAD.ThisissuchhelpfulinformationthatyoucanusetoloweryourAHInumberspossiblyandtohelpyoustayincompliancewiththeinsurancecompaniestoo.It’sbeenhelpfultomeandI’vebeenusingthisforabout2weeksandIreallyenjoygainingknowledgeonhowtogetbettersleepwithsleepapnea.Mostofthetimewegothroughthesleeptestsandyoufindoutwhetheryouracandidateforsleepapneatherapyandthedoctoronlyseesyouonceayearifthat.That’safterthepersonwhogivesyouyourmachineshowsyouhowtohitonandthat’sbasicallyit.Wellusingthisappgivesyouthetoolstohelpyougettherightsettingandtherightequipment(leaksarearealproblem).Inotherwordsyou’llhaveagoodchanceatreallyknowinghowtofightApneasandit’ssideeffects.AsterPerezReplyPostedonMarch02,2022It’stheaveragenumberofcombinedapneasandhypopneasperhour.Itismostoftenusedtodeterminetheseverityofaperson’ssleepapnea.LeaveaCommentCancelreplyComment*Name*Email*WebsiteFilterPostsUncategorizedSleepStudiesBeforeYourSleepStudyTypesofSleepStudiesAfterYourSleepStudyLearnAboutSleepInsuranceCoverageCPAPCPAPAlternativesCPAPTherapyCPAPSuppliesTravelingwithCPAPSleepDisordersWorkRelatedSleepDisordersWomenandSleepDisordersChildrenandSleepDisordersInsomniaSleepApneaParasomniasRestlessLegSyndromeNarcolepsySleepDeprivationSnoringHypersomniaFeaturedIn-DepthEducationalPostsForDoctor'sOfficesSleepandSexualHealthStressEpworthSleepinessScaleCOPDWinterDreamsSleepMenandSleepDisordersWarning!Youareusinganoutdatedbrowser.Thingsmaynotappearasintended.Werecommendupdatingyourbrowsertothelatestversion.Close