treatment of insomnia

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Official reprint from UpToDate www.uptodate.com ©2015 UpToDate Authors Michael H Bonnet, PhD Donna L Arand, PhD Section Editor Ruth Benca, MD, PhD Deputy Editor April F Eichler, MD, MPH The content on the UpToDate website is not intended nor recommended as a substitute for medical advice, diagnosis, or treatment. Always seek the advice of your own physician or other qualified health care professional regarding any medical questions or conditions. The use of this website is governed by the UpToDate Terms of Use ©2015 UpToDate, Inc. Treatment of insomnia All topics are updated as new evidence becomes available and our peer review process is complete. Literature review current through: May 2015. | This topic last updated: Apr 17, 2015. INTRODUCTION — Insomnia was previously viewed as a sleep disturbance that was secondary to a medical condition, psychiatric illness, sleep disorder, or medication, and would improve with treatment of the underlying disorder [1 ]. However, evidence over the past 20 years indicates that this view is incorrect. It is now recognized that insomnia is often an independent disorder [2,3 ]. Insomnia may occur in the absence of coexisting conditions and, when coexisting conditions exist, may persist despite successful treatment of the coexisting condition. Treatment directed at the insomnia and the comorbidity may be necessary. Since insomnia can precipitate, exacerbate, or prolong comorbid conditions, treatment of insomnia may improve comorbidities [47 ]. Treatment of insomnia is described in this topic review. The definition, types, epidemiology, clinical features, consequences, and diagnostic evaluation of insomnia are reviewed elsewhere. (See "Overview of insomnia" and "Clinical features and diagnosis of insomnia" .) GENERAL APPROACH — All patients with insomnia should receive therapy for any medical condition, psychiatric illness, substance abuse, or sleep disorder that may be precipitating or exacerbating the insomnia ( table 1 ). They should also receive basic behavioral counseling about sleep hygiene ( table 2 ) and stimulus control ( table 3 ). For patients who continue to have insomnia that is sufficiently burdensome to warrant other interventions, reasonable approaches include behavioral therapy, medication, or both: The approach should be individualized according to the patient's values and preferences, the availability of advanced behavioral therapies, the severity and impact of the insomnia, and the potential benefits versus the risks, costs, and inconveniences. Given the potential side effects associated with pharmacologic therapy and to a lesser extent with behavioral therapy, the decision to treat chronic insomnia must also factor in the potential health risks of not providing treatment, which include decreased quality of life, increased risk for psychiatric comorbidities and substance abuse, decreased performance, and the association between chronic insomnia and risk of cardiovascular morbidity and allcause mortality. (See "Overview of insomnia", section on 'Consequences' .) ® ® Behavioral therapies beyond sleep hygiene and stimulus control include relaxation, sleep restriction therapy, cognitive therapy, and cognitive behavioral therapy. These therapies are not available in all medical centers. (See 'Behavioral therapy' below.) Approved medications used to treat insomnia include benzodiazepines, nonbenzodiazepine sedatives, melatonin agonists, and antidepressants. (See 'Medications' below.) Combination therapy involves initially prescribing both cognitive behavioral therapy and a medication (usually for six to eight weeks), then tapering the medication off or to an asneeded schedule while continuing cognitive behavioral therapy. (See 'Combination therapy' below.) The use of medication prior to the initiation of behavioral therapy appears to be less effective [8 ].

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  • 2/6/2015 Treatmentofinsomnia

    http://www.uptodate.com/contents/treatmentofinsomnia?topicKey=SLEEP%2F7691&elapsedTimeMs=0&view=print&displayedView=full 1/19

    OfficialreprintfromUpToDate www.uptodate.com2015UpToDate

    AuthorsMichaelHBonnet,PhDDonnaLArand,PhD

    SectionEditorRuthBenca,MD,PhD

    DeputyEditorAprilFEichler,MD,MPH

    ThecontentontheUpToDatewebsiteisnotintendednorrecommendedasasubstituteformedicaladvice,diagnosis,ortreatment.Alwaysseektheadviceofyourownphysicianorotherqualifiedhealthcareprofessionalregardinganymedicalquestionsorconditions.TheuseofthiswebsiteisgovernedbytheUpToDateTermsofUse2015UpToDate,Inc.

    Treatmentofinsomnia

    Alltopicsareupdatedasnewevidencebecomesavailableandourpeerreviewprocessiscomplete.Literaturereviewcurrentthrough:May2015.|Thistopiclastupdated:Apr17,2015.

    INTRODUCTIONInsomniawaspreviouslyviewedasasleepdisturbancethatwassecondarytoamedicalcondition,psychiatricillness,sleepdisorder,ormedication,andwouldimprovewithtreatmentoftheunderlyingdisorder[1].However,evidenceoverthepast20yearsindicatesthatthisviewisincorrect.

    Itisnowrecognizedthatinsomniaisoftenanindependentdisorder[2,3].Insomniamayoccurintheabsenceofcoexistingconditionsand,whencoexistingconditionsexist,maypersistdespitesuccessfultreatmentofthecoexistingcondition.Treatmentdirectedattheinsomniaandthecomorbiditymaybenecessary.Sinceinsomniacanprecipitate,exacerbate,orprolongcomorbidconditions,treatmentofinsomniamayimprovecomorbidities[47].

    Treatmentofinsomniaisdescribedinthistopicreview.Thedefinition,types,epidemiology,clinicalfeatures,consequences,anddiagnosticevaluationofinsomniaarereviewedelsewhere.(See"Overviewofinsomnia"and"Clinicalfeaturesanddiagnosisofinsomnia".)

    GENERALAPPROACHAllpatientswithinsomniashouldreceivetherapyforanymedicalcondition,psychiatricillness,substanceabuse,orsleepdisorderthatmaybeprecipitatingorexacerbatingtheinsomnia(table1).Theyshouldalsoreceivebasicbehavioralcounselingaboutsleephygiene(table2)andstimuluscontrol(table3).

    Forpatientswhocontinuetohaveinsomniathatissufficientlyburdensometowarrantotherinterventions,reasonableapproachesincludebehavioraltherapy,medication,orboth:

    Theapproachshouldbeindividualizedaccordingtothepatient'svaluesandpreferences,theavailabilityofadvancedbehavioraltherapies,theseverityandimpactoftheinsomnia,andthepotentialbenefitsversustherisks,costs,andinconveniences.Giventhepotentialsideeffectsassociatedwithpharmacologictherapyandtoalesserextentwithbehavioraltherapy,thedecisiontotreatchronicinsomniamustalsofactorinthepotentialhealthrisksofnotprovidingtreatment,whichincludedecreasedqualityoflife,increasedriskforpsychiatriccomorbiditiesandsubstanceabuse,decreasedperformance,andtheassociationbetweenchronicinsomniaandriskofcardiovascularmorbidityandallcausemortality.(See"Overviewofinsomnia",sectionon'Consequences'.)

    Behavioraltherapiesbeyondsleephygieneandstimuluscontrolincluderelaxation,sleeprestrictiontherapy,cognitivetherapy,andcognitivebehavioraltherapy.Thesetherapiesarenotavailableinallmedicalcenters.(See'Behavioraltherapy'below.)

    Approvedmedicationsusedtotreatinsomniaincludebenzodiazepines,nonbenzodiazepinesedatives,melatoninagonists,andantidepressants.(See'Medications'below.)

    Combinationtherapyinvolvesinitiallyprescribingbothcognitivebehavioraltherapyandamedication(usuallyforsixtoeightweeks),thentaperingthemedicationoffortoanasneededschedulewhilecontinuingcognitivebehavioraltherapy.(See'Combinationtherapy'below.)Theuseofmedicationpriortotheinitiationofbehavioraltherapyappearstobelesseffective[8].

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    Inclinicalpractice,initialtreatmenttypicallyinvolvessleephygieneinstructionandstimuluscontrolprocedures.Iffollowupindicatesthatfurthertreatmentisneeded,thenmoreformalcognitivebehavioraltherapyaloneorincombinationwithamedicationmaybeusedforsixweeks.Forpatientswhorespondtotherapy(ie,reportbothimprovedsleepatnightandimprovementofdaytimedeficits),themedicationcanbetaperedorusedasneededwhilecontinuingthecognitivebehavioraltherapy.Patientswhosesymptomsrecurafterdiscontinuationoftherapymayrequirereevaluationforreferralforpolysomnographyoradditionalcognitivebehavioraltherapy,withorwithoutpharmacologictherapy.Anexceptiontothisapproachispatientswhohaveshortterminsomniaduetoaselflimitedstressorsuchpatientsmaybenefitfromshorttermmedicationalone.

    BEHAVIORALTHERAPYBehavioraltherapiesforinsomniaincludesleephygieneeducation,stimuluscontrol,relaxation,sleeprestrictiontherapy,cognitivetherapy,andcognitivebehavioraltherapy.Patientswhoseinsomniahasbeensuccessfullytreatedbybehavioraltherapyarelikelytoreportdecreaseddaytimesymptomsandimprovementofdaytimefunction,qualityoflife,andcomorbidities.Behavioraltherapyiswelltoleratedandhasalowriskofadverseeffects,butitisnotreadilyavailableinmanyplaces.

    Behavioraltherapybeyondanintroductiontosleephygieneandstimuluscontrolistypicallyimplementedoveraseriesofapproximately6to10sessions.Theevidencesuggeststhatthesuccessofthetherapyisrelatedtotheexperienceoftheindividualimplementingit[9].

    SleephygieneSleephygienereferstoactionsthattendtoimproveandmaintaingoodsleep(table2)[10]:

    Sleephygienecounselingalonehasnotbeendirectlycomparedwithnointerventionorashamintervention.However,numerousclinicaltrialshaveusedsleephygienecounselingaloneasthecontrolinterventionandshowedsomeimprovementinsleepbutlessthanthatseenwithpharmacotherapyorcognitivebehavioraltherapy[1214].

    StimuluscontrolPatientswithinsomniamayassociatetheirbedandbedroomwiththefearofnotsleepingorotherarousingevents,ratherthanthemorepleasurableanticipationofsleep.Thelongeronestaysinbedtryingtosleep,thestrongertheassociationbecomes.Thisperpetuatesthedifficultyfallingasleep.

    Stimuluscontroltherapyisastrategywhosepurposeistodisruptthisassociationbyenhancingthelikelihoodofsleep(table3)[15].Patientsshouldnotgotobeduntiltheyaresleepyandshouldusethebedprimarilyforsleep(andnotforreading,watchingtelevision,eating,orworrying).Theyshouldnotspendmorethan20minutesinbedawake.Iftheyareawakeafter20minutes,theyshouldleavethebedroomandengageinarelaxingactivity,suchasreadingorlisteningtosoothingmusic.Patientsshouldnotengageinactivitiesthatstimulatethemorrewardthemforbeingawakeinthemiddleofthenight,suchaseatingorwatchingtelevision.Inaddition,theyshouldnotreturntobeduntiltheyaretiredandfeelreadytosleep.Iftheyreturntobedandstillcannotsleepwithin20minutes,theprocessshouldberepeated.Analarmshouldbesettowakethepatientatthesametimeeverymorning,includingweekends.Daytimenapsarenotallowed.

    Patientsmaynotimproveimmediately.However,accumulatingsleepinesswillfacilitatesleepduringsuccessivenights.

    Sleepaslongasnecessarytofeelrested(usuallyseventoeighthoursforadults)andthengetoutofbedMaintainaregularsleepschedule,particularlyaregularwakeuptimeinthemorningTrynottoforcesleepAvoidcaffeinatedbeveragesafterlunchAvoidalcoholnearbedtime(eg,lateafternoonandevening)Avoidsmokingorothernicotineintake,particularlyduringtheeveningAdjustthebedroomenvironmentasneededtodecreasestimuli(eg,reduceambientlight,turnoffthetelevisionorradio)

    Avoidprolongeduseoflightemittingscreens(laptops,tablets,smartphones,ebooks)beforebedtime[11]ResolveconcernsorworriesbeforebedtimeExerciseregularlyforatleast20minutes,preferablymorethanfourtofivehourspriortobedtimeAvoiddaytimenaps,especiallyiftheyarelongerthan20to30minutesoroccurlateintheday

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    Stimuluscontroltherapyhasimprovedsleepinrandomizedtrialsanditseffectsmaybelonglasting[1618].Onestudysuggestedthatstimuluscontroltherapyismoreeffectiveamongpatientswhoarenotalreadytakingmedicationsforinsomnia[19].

    RelaxationRelaxationtherapymaybeimplementedbeforeeachsleepperiod.Therearetwocommontechniquesforrelaxationtherapy:progressivemusclerelaxationandtherelaxationresponse.

    Onetrialrandomlyassigned57patientswithinsomniatoreceiveprogressiverelaxationtherapyornotherapy[20].Progressiverelaxationtherapyimprovedmeasuresofsleep,butnotdaytimefunction.Anotherrandomizedtrialsimilarlyfoundimprovementinsleepmeasuresamongpatientswhoreceivedrelaxationtherapycomparedwithashamtherapy,buttheimprovementwasmodestandsmallerthanthatachievedwithcognitivebehavioraltherapy[21].Relaxationtherapyissometimescombinedwithbiofeedbacktoreducesomaticarousal.

    SleeprestrictiontherapySomepatientswithinsomniastayinbedlongertotrytomakeupforlostsleep.Thiscausesacircadianshiftandareductioninthehomeostaticdrivethatmakessleeponsetthefollowingnightmoredifficultandresultsintheneedtostayinbedevenlonger.Sleeprestrictiontherapycounteractsthistendencybylimitingthetotaltimeallowedinbed,includingnapsandothersleepperiodsoutsideofbed,inordertoincreasethedrivetosleep[22].Thisconsolidatessleepandimprovessleepefficiency(thepercentageoftimeinbedthatthepatientisasleep).

    Sleeprestrictiontherapybeginsbydecreasingthetimespentinbedtothesameamountoftimethatthepatientreportssleeping(usuallydeterminedfromsleepdiariesorlogscompletedbythepatient),butnotlessthanfivehourspernight(table4).Onadailybasis,thepatientreportstheamountofsleepobtainedthepreviousnightandtheamountoftimespentinbed.Theclinicianthencomputesthesleepefficiency,whichisthereportedtimeasleepdividedbythereportedtimeinbed.Thetimeinbedisincreasedby15to30minutesoncethesleepefficiencyexceeds85percent.Thisprocessisrepeateduntilthepatientreportsimprovedsleepwithoutresidualdaytimesleepiness.However,totaltimeinbedforsomepatientscanremainatsixhoursorlessforlongperiodsoftime.Napsarenotpermitted.

    Toimprovecompliance,therationaleforthetherapyneedstobecarefullyexplainedtopatientsandsomecareneedstobeusedtodetermineandschedulethetimeinbedinamannerthatmaximizestheabilitytosleepandisacceptabletothepatient.Olderpatientstendtohavemoredifficultymaintainingsleepevenwhenrestrictedtherefore,theyaregivenmorelenientcriteria.

    A2014systematicreviewidentifiedfourrandomizedtrialsofsleeprestrictiontherapyasastandalonetherapyversusanotherinterventionorcontrolforchronicinsomnia[23].Theweightedeffectsizesforimprovementinsubjectivesleepvariablesweremediumtolargeandcomparabletothoseachievedwithcognitivebehavioralinterventionsinothermetaanalyses[24,25].Inthelargestindividualstudy,179olderadultswithprimaryinsomniawererandomlyassignedtosixweeksofsleeprestrictiontherapy,stimuluscontroltherapy,amulticomponentbehavioralintervention,orwaitlistcontrol[26].Alltreatmentsresultedinsignificantimprovementsindiaryreportedsleepoutcomescomparedwithcontrol,andtherewasnoadvantagetoamulticomponentinterventionoverasinglecomponentintervention.Effectsizesweregenerallymoderatetolargeandmaintainedat3and12monthsposttreatment.

    Potentialadverseeffectsofsleeprestrictiontherapyincludeincreaseddaytimesleepinessanddecreased

    Progressiverelaxationisbaseduponthetheorythatanindividualcanlearntorelaxonemuscleatatimeuntiltheentirebodyisrelaxed.Beginningwiththemusclesintheface,themusclesarecontractedgentlyforonetotwosecondsandthenrelaxed.Thisisrepeatedseveraltimes.Thesametechniqueisusedforothermusclegroups,usuallyinthefollowingsequence:jawandneck,upperarms,lowerarms,fingers,chest,abdomen,buttocks,thighs,calves,andfeet.Thiscycleisrepeatedforapproximately45minutes,ifnecessary.

    Therelaxationresponsebeginsbylyingorsittingcomfortably.Theeyesareclosedandrelaxationisallowedtospreadthroughoutthebody.Arelaxed,abdominalbreathingpatternisestablished.Thoughtsareredirectedawayfromeverydaythoughtsandtowardaneutralmentalfocusingdevice,suchasapeacefulwordorimage.

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    reactiontimes,aswellaspossibleexacerbationofbipolardisorder.(See'Adverseeffects'below.)

    CognitivetherapyPatientswhoareawakeatnightcommonlybecomeconcernedthattheywillperformpoorlythenextdayiftheydonotobtainadequatesleep.Thisworrycanexacerbatetheirdifficultyfallingasleep,creatingaviciouscycleofwakefulnessandconcern.Apersonmaybegintoblameallnegativeeventsintheirlifeonpoorsleep.Duringcognitivetherapy,apersonworkswithatherapisttodealwithanxietyandcatastrophicthinking,whileestablishingrealisticexpectationsrelatedtoinsomniaandtheneedforsleep.

    CognitivebehavioraltherapyCognitivebehavioraltherapy(CBT)isastrategythatcombinesseveralofthepreviouslydescribedapproachesoverseveralweeks[27].AsampleeightsessionCBTprogrammayincludeanintroductorysleepeducationsession,followedbytwosessionsthatfocusonstimuluscontrolandsleeprestriction.Thesemaybefollowedbytwosessionsthatfocusoncognitivetherapyandthenasessiononsleephygiene.Finally,theremaybeasessionthatreviewsandintegratestheprevioussessionandasessionthataddressesfutureproblems,suchasstressandrelapse[28].Patientsareencouragedtocompletesleeplogsastheylearnandapplythevariousstrategies.Thisallowsimprovementtobemeasured.

    TheadvantageoftheeducationalnatureofCBTisthatitprovidespatientswithtoolstoapplyinthefuture.DisadvantagesofCBTincludethedurationoftherapyandtherelativelyfewclinicianswhoareskilledatallofitscomponents.ThebenefitofCBTmaybereducedwhenitisadministeredbylessexperiencedclinicians[9].

    CBThasprovenefficaciousinmoderatetohighqualityrandomizedtrials[1].AmetaanalysisofbehavioraltherapiesforinsomniathatfoundthatCBTimprovedsubjectivesleepqualityanddecreasedsubjectivewaketimeduringthenight[29].ThebenefitsofCBTappeartopersistwellbeyondtheterminationofactivetreatment[1].SmallrandomizedstudieshavealsosuggestedthatalternativedeliverymethodssuchastelephonebasedCBT[30,31]andinternetbasedCBT[3235]maybeeffectivetreatmentoptionsthatcouldovercomesomeoftheaccessandeconomicbarriersthatexistfortraditionalCBT.However,largerstudiesdirectlycomparingthesemethodswithtraditionalCBTareneeded[36].

    CBTisparticularlyrecommendedforuseinsituationswheremedicationsarecontraindicatedormaybemorelikelytoproducesideeffects,suchasolderadults,pregnantwomen,andpatientswithrenal,hepatic,orpulmonarydisease.

    OtherapproachesOtherbehavioraltherapiesthatmayemergeasusefulinthetreatmentofinsomniaincludemindfulnessmeditation[3740]andexercisetraining[41].However,asmallrandomizedtrialcomparingtaichiwithCBTinolderadultsfoundthatCBTwasassociatedwithgreaterandmoresustainedimprovementinsleepquality,fatigue,anddepressivesymptomsthantaichi[42].

    AdverseeffectsAdverseeffectsofbehavioraltherapyhavenotbeenwelldescribed,butoneareaofcautionrelatestosleeprestriction.Sleeprestrictiondecreasessleeplatencyandincreasessleepefficiencybycausingsleepdeprivation(ie,totalsleeptimeisdecreased,notincreased).Inonestudy,subjectsreportedincreasedsleepinessandhadslowerreactiontimesduringafourweektreatmentperiodthatthenreturnedtobaselinethreemonthslater,whentimeinbedhadincreasedtoaboutsevenhours[43].Theseeffectsaresimilartothoseseenduringchronicpartialsleepdeprivationandsuggestthatpatientsusingthistherapyshouldbecarefullymonitoredandinstructedtoavoidhazardousactivityanddrivingwhentimeinbedhasbeensignificantlyreduced.Sleeprestrictionshouldbeusedwithcautioninpatientswithunderlyingbipolardisorder,sincesleepdeprivationcantriggermanicepisodes[44].

    MEDICATIONSMedicationsthatarecommonlyusedtotreatinsomniaincludebenzodiazepines,nonbenzodiazepinesedatives,andmelatoninagonists.Patientswhoseinsomniahasbeensuccessfullytreatedwithpharmacologictherapyarelikelytoreportimprovementofdaytimefunction,betterqualityoflife,andfewercomorbidities(eg,depressedmood).Risksofpharmacologictherapyincludesideeffects,aswellasphysicalandpsychologicaladdictionwithlongtermuse.Theserisksmaybeincreasedincertainclinicalsettings:

    PregnancySedativehypnoticsmayincreasetheriskoffetalmalformationsifusedduringthefirsttrimester.

    AlcoholconsumptionSedativehypnoticsshouldnotbecombinedwithalcoholbecausethereisariskofexcessivesedationandrespiratorysuppressionwhenevercentralnervoussystemsuppressantsare

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    ChoiceofanagentRandomizedtrialsdirectlycomparingtheeffectofdifferentmedicationsoninsomniaarerare.Indirectcomparisonsofbenzodiazepinesandnonbenzodiazepinessuggestthattheseclassesofmedicationhaveasimilarimpactonsleeponsetlatency(ie,theydecreaseobjectivesleeponsetlatencybyapproximately10minutesandsubjectivesleeponsetlatencyby15to20minutes)[45].However,thebenzodiazepinesaremorelikelytoprolongtotalsleeptime,perhapsbecausetheytendtohavelongerhalflives[45,46].

    Inoneofthefewtrialsthatdirectlycompareddifferentmedications,382patientswithprimaryinsomniareceivedeachofsixinterventionsinrandomorderfortwonightseach,withathreetosevendaywashoutperiodinbetween[47].Theagentsincludedplacebo,eszopiclone(1,2,2.5,and3mg),andzolpidem(10mg).Comparedwithplacebo,eszopicloneatdosesof2.5and3mgdecreasedthemedianwaketimeaftersleeponset,butzolpidemandeszopicloneatdosesof1and2mgdidnot.Thewaketimeaftersleeponsetreferstotheamountoftimethatthepatientisawakebetweensleeponsetandthefinalmorningarisingtime.Therewerenodifferencesinanyoftheobjectivesleepoutcomeswheneszopiclone(2and3mg)andzolpidemwerecompareddirectly.

    Mostcliniciansselectasedativehypnoticonthebasisofthetypeofinsomnia(ie,sleeponsetorsleepmaintenance)andthedurationofeffect:

    Otherissuestobeconsideredwhenprescribingamedicationforinsomniaincludecostandadverseeffects.Thebenzodiazepinesandoffpatentnonbenzodiazepines(specifically,zaleplonandzolpidem)tendtobelessexpensivethantheothernonbenzodiazepinesandramelteon.Theadverseeffectsarediscussedbelow.(See'Risksandsideeffects'below.)

    BenzodiazepinesBenzodiazepinesareaclassofsleeppromotingmedicationsthatbindtoseveralgammaaminobutyricacid(GABA)typeAreceptorsubtypes[48].Theyreducethetimetotheonsetofsleep,prolongstage2sleep,prolongtotalsleeptime,andmayslightlyreducetherelativeamountofrapideyemovement(REM)sleep[49].Inaddition,theydecreaseanxiety,impairmemory,andhaveanticonvulsiveproperties.

    combined.

    RenalorhepaticdiseaseMostsedativehypnoticmedicationsundergohepaticandrenalclearance.Metabolicclearancemaybedelayedinpatientswhohaverenalorhepaticdisease,leadingtoaccumulationandexcessivesedation.

    PulmonarydiseaseorsleepapneaManysedativehypnoticsarerespiratorysuppressantsthatcanworsenobstructivesleepapneaorhypoventilation.

    NighttimedecisionmakersSedativehypnoticsshouldnotbetakenbyindividualswhomaybecalledupontomakeimportantdecisionsduringthenight(eg,cliniciansoncallorsingleparentsresponsibleforthecareofyoungchildren)becausetheycancauseexcesssedationandimpairdecisionmaking.

    OlderadultsTheriskofadverseeffectsisincreasedinolderadults,especiallythosewhoareolderthan75years.Thisisaconsequenceofmultiplecomorbiditiesandcentralnervoussystemchangesassociatedwithaging.(See'Olderadults'below.)

    Forpatientswithsleeponsetinsomnia,ashortactingmedicationisareasonablechoiceforaninitialtrialofpharmacologictherapy.Thismayimprovetheinsomniawithlessresidualsomnolencethefollowingmorning.Examplesofshortactingmedications(durationofeffect8hours)includezaleplon,zolpidem,triazolam,lorazepam,andramelteon.

    Forpatientswithsleepmaintenanceinsomnia,alongeractingmedicationispreferableforaninitialtrialofpharmacologictherapy.Examplesoflongeractingmedicationsincludezolpidemextendedrelease,eszopiclone,temazepam,estazolam,andlowdosedoxepin.However,thesemedicationsmayincreasetheriskforhangoversedationandpatientsmustbewarnedaboutthispossibility.

    Forpatientswithawakeninginthemiddleofthenight,bothzaleplonandaspecificsublingualtabletformofzolpidemhavebeendevelopedforuseduringthenight,withtheconstraintthattherewillbeatleastfourhoursoftimeinbedremainingafteradministration.

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    Benzodiazepinescommonlyusedforthetreatmentofinsomniaincludetriazolam,estazolam,lorazepam,temazepam,flurazepam,andquazepam.Aprimarydifferenceamongthesemedicationsistheirdurationofaction.Triazolamisshortactingestazolam,lorazepam,andtemazepamareintermediateactingflurazepamandquazepamarelongacting(table5)[49].Diazepamisalsolongacting,butisgenerallynotusedtotreatinsomniabecauseithasalongdurationofeffectandcanleadtotheaccumulationofactivemetabolites.Thelongactingbenzodiazepinesshouldbeavoidedinolderadultsbecausethereisincreasedriskforadverseeffectsinthispatientpopulation[50].

    Metaanalysesofrandomized,placebocontrolledtrialsindicatethatbenzodiazepinesdecreasesleeplatencyandthenumberofawakenings,whileimprovingsleepdurationandsleepquality[45,46,51,52].Typicalchangesassociatedwiththesemedicationsincludedecreasesinthedurationtosleeponsetbyapproximately10minutesandincreasesinthetotalsleeptimeof30to60minutes[45,46].

    Thesideeffectsofbenzodiazepinesaredescribedbelow.(See'Risksandsideeffects'below.)

    NonbenzodiazepinesNonbenzodiazepinereceptoragonistshaveastructurethatisdifferentfromthebenzodiazepinesandincludesmoretargetedactionatoneGABAtypeAreceptor.Aconsequenceoftheirgreaterspecificityislessanxiolyticandanticonvulsantactivity.

    Nonbenzodiazepinesappeartoimprovebothsubjectiveandobjectivesleepoutcomes.Specifically,metaanalysesofrandomized,placebocontrolledtrialsindicatethatnonbenzodiazepinesdecreasesleeplatencyandthenumberofawakenings,whileimprovingsleepdurationandsleepquality[45,46,5153].Nonbenzodiazepineshaveincreasedadverseeventscomparedwithplacebo.

    Nonbenzodiazepinescommonlyusedtotreatinsomniaincludezaleplon,zolpidem,eszopiclone,andzolpidemextendedrelease(table6):

    Zaleplonhasaveryshorthalflifeofaboutonehour.Asaresult,itiseffectiveforpatientswhohavedifficultyfallingasleep(ie,sleeponsetinsomnia),butmaynotbeeffectiveforpatientswhohavedifficultymaintainingsleep(ie,sleepmaintenanceinsomnia)[54].Duetotheveryshorthalflife,thepotentialforhangoversleepinessisminimalafternormalsleepperiods.Occasionalsideeffectsincludeheadache,dizziness,nausea,abdominalpain,andsomnolence[48].Zaleplonisnotindicatedforlongtermuse.

    Zolpidemhasahalflifeofapproximately1.5to2.4hours.Itisindicatedfortheshorttermtreatmentofinsomniacharacterizedbydifficultywithsleepinitiation[55].Themostcommonsideeffectsareheadache,dizziness,andsomnolence,whichcaninturnleadtofalls.Zolpidemisnotapprovedforlongtermuse.

    Zolpidemisalsoavailableinadissolvabletabletandasanoralsprayforpatientswhohavedifficultyswallowingapill.Adissolvabletablet(1.75to3.5mg)canbetakeninthemiddleofthenightforsleepmaintenanceinsomnia,withtherequirementthatatleastfourhoursbeavailabletosleepafteradministrationandatleastfivehoursbeavailablepriortodriving.InJanuaryof2013,theUSFoodandDrugAdministration(FDA)issuedasafetyannouncementrecommendinguseofalowerdoseinwomenthanhadbeenpreviouslyrecommended[56].Thisshouldalsobeconsideredinmen.(See'Dosingprecautions'below.)

    Zolpidemextendedreleasealsohasahalflifeofabout1.5to2.4hours,butisreleasedoveralongerduration.Itwasdevelopedtoimprovebothsleeponsetinsomniaandsleepmaintenanceinsomniawhileavoidinghangovereffects,althoughithasneverbeendirectlycomparedwithregularzolpidem[57].Sideeffectsofzolpidemextendedreleasearerelativelyfew,withthemostcommonbeingheadache,somnolence,anddizziness,whichcaninturnleadtofalls[48].InJanuaryof2013,theFDArecommendeduseofalowerdoseinwomenthanhadbeenpreviouslyrecommended[56].Thislowerdoseshouldalsobeconsideredformen.Inafollowupsafetyannouncement,theFDAaddedawarningthatpatientsshouldnotdriveorengageinotheractivitiesthatrequirecompletementalalertnessthedayaftertakingzolpidemextendedreleasebecausezolpidemlevelscanremainhighenoughthenextdaytoimpairtheseactivities[58].

    Sleepmaybeworseduringthefirstnightfollowingdiscontinuationofthismedicine.Zolpidemextended

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    Mostclinicaltrialsevaluatedshorttermtherapy(eg,sevendays),althoughafewlongerclinicaltrialshavebeenperformed.Inonerandomizedtrial,patientstreatedwitheszopicloneforsixmonthshadimprovedqualityoflife,decreasedworklimitation,andimprovedsleepcomparedwithplacebo[61].Thispersistedthroughoutthetrialandthesubsequentsixmonthopenlabelextension.Inanotherrandomizedtrialof1018patientswithinsomnia,zolpidemextendedreleasetakenforuptosixmonthsimprovedsleeponset,sleepmaintenance,morningsleepiness,nextdayconcentration,andworkperformancecomparedwithplacebo[62,63].

    Adverseeffectsassociatedwiththenonbenzodiazepinesaresimilartothoseassociatedwithbenzodiazepines.Thisisdiscussedbelow.(See'Risksandsideeffects'below.)

    MelatoninagonistsRamelteonisamelatoninagonist.Inrandomizedtrials,shorttermuseoframelteonisassociatedwithimprovementinsomesleepparametersinpatientswithinsomnia,buttheeffectsizeisrelativelysmall.

    A2014metaanalysisthatincluded11trialsandover5700patientsfoundthatramelteonwasassociatedwithsignificantimprovementinsubjectivesleeplatency(4.6minutes)andtotalsleeptime(7.3minutes)comparedwithplacebobutnosignificantdifferenceinotherparameters,includingsubjectivetotalsleeptime,numberofawakenings,andwakefulnessaftersleeponset[64].Althoughmoststudiesexaminedshorttermtreatmentandoutcomeinmiddleagedadults[64],asmallnumberofindividualtrialshavedemonstratedpersistenceofsubjectivebenefitforatleastsixmonths,andimprovementinolderadults[6569].Subjectiveefficacyextendedtooneyearinanopenlabeltrial[70].

    AlthoughramelteonisapprovedintheUnitedStatesandJapan,theEuropeanMedicinesAgency(EMA)concludedin2008thattherewasinadequateevidencethatthedrugwaseffectiveforinsomnia[71].Itdidnotapproveramelteonforuse.TasimelteonisasecondmelatoninagonistthathasbeenapprovedintheUnitedStatesfortreatmentofnon24hoursleepwakedisorder,acircadiansleepwakerhythmdisorderthatoccursprimarilyinblindindividuals[72].

    Ramelteonbindstomelatoninreceptorsexpressedinthesuprachiasmaticnucleuswithmuchhigheraffinitythanmelatoninitselfandhasahalflifeof1.5to5hours[73,74].Ramelteonismetabolizedbytheliverandshouldbeusedwithcautioninpatientswithhepaticinsufficiency.Itiscontraindicatedinpatientstakingfluvoxamine,sincefluvoxaminemaydecreasethemetabolismoframelteon[75].Ramelteonismoreeffectiveintreatingsleeponsetinsomniacomparedwithsleepmaintenanceinsomnia.

    Adverseeffectsassociatedwithmelatoninagonistsaregenerallymilderthanthoseassociatedwithbenzodiazepinesandnonbenzodiazepines.Themostcommonadverseeffectissomnolence.(See'Adverseeffectsofmelatoninagonists'below.)

    OrexinreceptorantagonistsOrexinreceptorantagonistsareanovelclassofdrugsindevelopmentforthetreatmentofinsomnia.OrexinAandorexinBarehypothalamicneuropeptidesthatplayakeyroleinpromotingwakefulnessandregulatingthesleepwakecycle[76].Suvorexant,anoraldualorexinreceptorantagonistwitha12hourhalflife,wasapprovedbytheFDAinAugust2014[77].

    Theefficacyofsuvorexantwasdemonstratedinamulticenterinternationaltrialof781patientswithprimary

    releaseisnotlimitedtoshorttermuseandthereislittleevidenceforabuseordependenceinmostpatients.Intheory,however,suchmedicationscouldbehabitformingwithlongtermuse.(See'Adverseeffectsofnonbenzodiazepines'below.)

    Eszopiclonehasthelongesthalflifeoftheapprovednonbenzodiazepines,approximatelyfivetosevenhours.Thismayextendtoninehoursinolderadultpatients.Eszopicloneiseffectiveforbothsleeponsetinsomniaandsleepmaintenanceinsomnia[59].Patientstakingeszopiclonemayreportanunpleasantmetallictaste.Otherreportedsideeffectsaresharedwithnonbenzodiazepinesasaclass(headache,dizziness,parasomnias,nextdayimpairmentinsomepatients)[48,60].(See'Adverseeffectsofnonbenzodiazepines'below.)

    Sleepmaybeworseonthefirstnightafterdiscontinuationofthismedication.Eszopicloneisnotlimitedtoshorttermuseandthereislittleevidenceforabuseordependenceinmostpatients.Intheory,however,suchmedicationscouldbehabitformingwithlongtermuse.

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    insomniawhowererandomlyassignedtoreceivenightlysuvorexantorplaceboina2:1ratioforoneyear,followedbyatwomonthrandomizeddiscontinuationphase[78].Thedoseofsuvorexantusedwas40mgforpatients

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    constipation,andincreasedintraocularpressure[1].Routineuseofdiphenhydraminetotreatinsomniaisnotrecommended.

    AntipsychoticsAntipsychoticshavebeenusedtotreatinsomnia.However,therearefewtrialsthatdemonstrateeffectivenessofthesemedicationsandallhavepotentiallysignificantadverseeffects.Theroutineuseofantipsychoticstotreatinsomniainpatientswithoutpsychosisisnotrecommended[1].

    BarbituratesBarbiturateshavesimilarlybeenusedtotreatinsomnia.However,thereislittleevidencethatthesemedicationsimproveinsomniaandallhavepotentiallysignificantadverseeffects.Routineuseofbarbituratestotreatinsomniaisnotrecommended[1].

    OverthecounterHerbalproducts,hormones,andalcoholicbeverageshavebeenusedassleepaidsbypatientswithinsomniabuttherearesparsedatauponwhichtoevaluatetheirefficacy.TheseagentsarenotregulatedbytheFDA.

    Risksandsideeffects

    CommontoallhypnoticsThemostcommonadverseeffectsassociatedwiththebenzodiazepinesandnonbenzodiazepinesareresidualdaytimesedation,drowsiness,dizziness,lightheadedness,cognitiveimpairment,motorincoordination,anddependence[1,45,46,51].Inaddition,mosthypnoticsarerespiratorysuppressantsthatcanworsenobstructivesleepapneaorhypoventilation.

    Longtermusemaybehabitformingandreboundinsomniamayoccurwhensomeshortactingmedicationsarediscontinued.Lesscommonadverseeffectsincludecomplexsleeprelatedbehaviors(eg,sleepwalking,driving,makingtelephonecalls,eating,orhavingsexwhilenotfullyawake),anterogradeamnesia(particularlywithtriazolamorwhenusedwithalcohol),aggressivebehavior,andsevereallergicreaction[49,92].Lethaloverdoseisrare[93],unlessthereisconcurrentuseofalcoholoranothercentralnervoussystemdepressant.

    AdverseeffectsofnonbenzodiazepinesGenerallyspeaking,theadverseeffectsassociatedwiththenonbenzodiazepinesaresimilartothoseassociatedwiththebenzodiazepines,buttheirfrequencyandseveritymaybeless[45,46].Thisisprobablyrelatedtotheirshorterhalflives,althoughasdiscussedbelow,nextmorningimpairmenthasbeenincreasinglyrecognizedwithhigherdosesandincertainpatientpopulations.(See'Dosingprecautions'below.)

    Mostofthecomplexsleeprelatedbehaviorsthathavebeenreportedinpatientstakingnonbenzodiazepineswererelatedtozolpidem,butitisunknownwhetherthisreflectsthewidespreaduseofzolpidemoranassociationbetweentheagentandthesideeffect[49].Inonestudy,zolpidemaccountedfor12percentofall

    HerbalproductsAvarietyofherbalproductsarepurportedtobeusefulforinsomnia.Thereislittleevidencefromrandomizedcontrolledtrialsabouttheefficacyofmanyherbals,however,andforthosethathavebeenwellstudied(eg,valerian),thereislittleevidenceofbenefit.Ametaanalysisthatincluded14randomizedtrialsinover1600patientsfoundnosignificantdifferencebetweenanyherbalmedicineandplaceboonanyof13clinicalefficacymeasuresofinsomnia[84].Themajorityofthetrials(11outof14)studiedvalerianchamomile,kava,andwulingwerestudiedinonetrialeach.Unliketheotherherbalsstudied,valerianwasassociatedwithagreaternumberofadverseeventsperpersoncomparedwithplacebo.Valerianmayalsoproducehepatotoxiceffects[1].Contaminationwithundesirablesubstancesposesaproblemformanysuchnaturalremedies.

    MelatoninMelatoninisahormonethatisnormallysecretedbythepinealgland.Itdoesnotappeartobebeneficialasatreatmentforinsomniainmostpatientswithtwoexceptions:itmaybeusefulinpatientswhohavedelayedsleepphasesyndromeandinasubgroupofpatientswithlowmelatoninlevels[1,8590].Itappearstobesafewhenusedshortterm(threemonthsorless)[87].(See"Classificationofsleepdisorders",sectionon'Circadianrhythmsleepwakedisorders'.)

    AlcoholAlcoholiscommonlyselfprescribedasasleepaidbecauseitdecreasesthetimerequiredtofallasleep,atleastintheshortterm.However,alcoholcanpromotesleepdisturbanceslaterinthenightandpromotesupperairwayinstabilityandsleepapnea.Thesenegativeeffects,coupledwiththesignificantriskofdependenceandinteractionwithothermedications,precludetheuseofalcoholtotreatinsomnia[91].

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    emergencydepartmentvisitsforadversedrugeventsrelatedtopsychiatricmedicationintheUnitedStatesovertheperiodof2009to2011,and21percentofallsuchvisitsinvolvingadults65yearsofage[94].Othersideeffectsthathavebeenreportedinpatientstakingnonbenzodiazepinesincludeanunpleasanttaste(eszopiclone)andhallucinations(zolpidem).

    Theincidenceofinfection(eg,upperrespiratory,otitismedia,urinarytract,conjunctivitis,others)mayalsobeincreasedamongpatientstakinganonbenzodiazepine,accordingtoonemetaanalysis[95].Twosubsequentstudies,oneinhumansandoneinmice,havealsoreportedanincreasedriskofpneumoniaassociatedwithbenzodiazepinesandthenonbenzodiazepinezopiclone,possiblyrelatedtomodificationofGABAtypeAactivityduringinfection[96,97].Astudyinmicesuggestedthatthisriskcouldextendtoallhypnoticsthatactatthissite[97].

    DosingprecautionsDosingrecommendationsforhypnoticmedicationshavetraditionallybeenbasedongroupstatisticaleffectsratherthanindividualresponses.However,therehasbeenincreasingrecognitionthatvariabilityinnonbenzodiazepinemetabolismmayaffectnextmorningdruglevelsandsideeffects.Thesafetyannouncementsreviewedbelowsuggestthatcliniciansshouldhaveincreasedsensitivitytonextdayresidualeffectswhenprescribinganyofthedrugsinthisclassandshouldeducatepatientsaccordingly.

    AdverseeffectsofmelatoninagonistsRamelteonhasfewersideeffectsthanthenonbenzodiazepinesorbenzodiazepines[99].Itisnotassociatedwithhypnoticsideeffects(eg,nextdayresidualperformancedeficits),withdrawal,orreboundinsomnia,anditdoesnotappeartobehabitforming[69,99].RamelteonhaslittleabusepotentialandisnotascheduledsubstancewiththeUnitedStatesDrugEnforcementAdministration(DEA),unlikemostotherdrugsusedtotreatinsomnia.Themostcommonsideeffectsaresomnolence,dizziness,nausea,fatigue,andheadache[1,49].Elevatedprolactinlevelsanddecreasedtestosteronelevelsmayoccur,butroutinemonitoringofeitherisnotindicatedintheabsenceofotherclinicalindications.

    OlderadultsOlderadultshaveaparticularlyhighriskofadverseeffects,includingexcessivesedation,cognitiveimpairment,delirium,nightwandering,agitation,postoperativeconfusion,balanceproblems,fallandfractures,andimpairedperformanceofdailyactivities[100102].Inametaanalysisof24randomizedtrials(2417patients)thatevaluatedtheimpactofpharmacotherapyinadultsolderthan60yearswithinsomnia,therewasanimprovementofsleepquality,totalsleeptime,andfrequencyofnighttimeawakening[103].However,themagnitudeofthesebenefitswasrelativelysmallcomparedwiththetwotofivefoldincreaseinadversecognitiveorpsychomotorevents.Thissuggeststhatadditionalcautionisnecessarywhendecidingwhetherpharmacotherapyisindicatedforanolderpatientwithinsomnia.

    MortalitySeveralobservationalstudieshavefoundanassociationbetweenuseorprescriptionofhypnoticdrugsandallcausemortality,withadjustedhazardratiosrangingfrom1.1to4.5[104109].Theassociationhasbeenobservedinthegeneraladultpopulation[104106,108,109],postmenopausalwomen

    In2013,theFDApublishedasafetycommunicationthattherecommendeddoseforzolpidembesetatthelowestdose(5mgforallexceptzolpidemextendedrelease,whichisnow6.25mg)forwomenandalsobeconsideredformen[56].Inaddition,anewwarningwasissuedforzolpidemextendedrelease,advisingthatindividualsrefrainfromdrivingorotheractivitiesthatrequirementalalertnessthedayaftertakingthedrug[58].Theserecommendationswerebasedonstudiesshowingthatbloodlevelsofzolpidemaboveabout50ng/mLappearedcapableofimpairingdrivingsufficientlytoincreasetheriskofanaccident.Thisbloodlevelwasfoundinabout15percentofwomenand3percentofmeneighthoursafteradministrationof10mgofzolpidem.Eighthoursafteruseoftheextendedreleaseformulationofzolpidem,33percentofwomenand25percentofmenstillhadthiselevatedbloodlevel.

    Additionalrecommendationswerenotmadeforolderadults,whohavepreviouslybeenadvisedtousethelowestdosesofthesemedications,butadditionalcareiswarrantedforthesepatients.(See'Olderadults'below.)

    In2014,asimilarsafetycommunicationwasissuedforeszopiclone,basedondatathatthe2and3mgdosesmaybeassociatedwithimpairmentofdrivingskills,memory,andcoordinationlastingmorethan11hourswithoutsubjectiveawarenessinsomepatients[98].Astartingdoseof1mgisnowrecommendedinallpatients.

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    [107],andinpatientswithschizophrenia[110].Otherstudiesinolderadultshavefailedtofindasignificantassociationbetweenhypnoticuseandmortalityafteradjustingforpotentialconfounders[111,112].

    Oneofthelargerstudiessuggestedthathypnoticdrugs(includingfrequentlyprescribedagentssuchaszolpidemandtemazepam)wereassociatedwithanincreasedriskofbothcanceranddeath,evenatprescriptionlevelsoflessthan18dosesperyearovera2.5yearduration[104].Anotherlargeretrospectivecasecontrolstudyincludedover34,000patientsage16yearsandolderfirstprescribedananxiolyticorhypnoticdrugorbothbetween1998and2001,matchedbyage,gender,andprimarycarepracticewithnearly70,000controls[109].Overanaveragefollowupperiodof7.6years,prescriptionofanxiolyticandhypnoticdrugswasassociatedwithatwofoldincreasedhazardofdeathafteradjustingforawiderangeofpotentialconfounders,includingmedicalandpsychiatriccomorbidities,sleepdisorders,andotherdrugs.Afterexcludingdeathsduringthefirstyearoffollowup,thiseffecttranslatedtofourexcessdeathsper100peoplefollowedoverasevenyearperiod.

    Itisimportanttoemphasize,however,thatthisevidenceisobservationaland,therefore,doesnotindicatecausality.Chronicinsomniahasbeenassociatedwithavarietyofmedicalandpsychiatriccomorbidities,manyofwhichareassociatedwithprematuremortality,anditisdifficulttoexcluderesidualconfoundingbyindicationorotherunmeasuredfactors.Aprospectiveinvestigationoflongtermhypnoticusecomparedwithplaceboandbehavioraltreatmentisneeded.

    DruginteractionsConcurrentuseofanysleepingmedicationandalcohol(oranothercentralnervoussystemdepressant)increasestheriskofcentralnervoussystemdepressionand,therefore,iscontraindicated.

    Mostbenzodiazepines(exceptlorazepam,oxazepam,andtemazepam)andnonbenzodiazepinesaremetabolizedbytheCYP3A4system[49].InhibitorsoftheCYP3A4system(eg,clarithromycin)increasetheriskoftoxicityrelatedtobenzodiazepinesandnonbenzodiazepines,whileinducersoftheCYP3A4system(eg,rifampin)maydecreasetheeffectivenessofbenzodiazepinesandnonbenzodiazepines.

    RamelteonismetabolizedbytheCYP1A2systemand,toalesserextent,theCYP2C9andCYP3A4systems[49].FluvoxamineisapotentinhibitoroftheCYP1A2systemandshouldnotbeusedwithramelteonbecauseitmarkedlyincreasesserumconcentrationsoframelteon.OtherinhibitorsoftheCYP1A2(eg,ciprofloxacin),CYP2C9,orCYP3A4systemsmayalsoincreasetheriskoframelteontoxicity,whileinducersoftheCYPsystems(eg,rifampin)maydecreasetheeffectivenessoframelteon.

    COMBINATIONTHERAPYCombinationtherapyinvolvesprescribingbothcognitivebehavioraltherapy(CBT)andamedication,usuallyforsixtoeightweeks.Themedicationisthentaperedoffortoanasneededschedule,whilecontinuingtheCBT.

    Twotrialsfromthesameinvestigatorsillustratetheeffectsofcombinationtherapy:

    Thefirsttrialrandomlyassigned78patientswithpersistentinsomniatoreceiveCBTalone,temazepamalone,CBTplustemazepam,orplaceboforeightweeks[113].Attheendofthetreatmentphase,allofthetherapieshadsignificantlydecreasedthewaketimeaftersleeponsetcomparedwithplacebo,althoughtherewerenosignificantdifferenceswhenthetreatmentgroupswerecomparedwitheachother.Twoyearsfollowingthecompletionoftreatment,onlytheCBTalonegrouphadmaintaineditsreductioninthewaketimeafterinitialsleeponset.

    Thesecondtrialrandomlyassigned160patientswithpersistentinsomniatoreceiveCBTpluszolpidemorCBTaloneforsixweeks[114].Bothgroupshaddecreasedsleeponsetlatency,decreasedwaketimeaftersleeponset,andincreasedsleepefficiencywhencomparedwithbaselineaftersixweeks.However,therewasnosignificantdifferenceintheremissionratewhenthegroupswerecomparedwitheachother(44versus39percent).Thepatientsthenunderwentsecondaryrandomization.PatientsintheCBTalonegroupwererandomlyassignedtonotreatmentormaintenanceCBT,whilepatientsintheCBTpluszolpidemgroupwererandomlyassignedtoeithermaintenanceCBTormaintenanceCBTplusasneededzolpidem.Theimprovementofsleeplatency,waketimeaftersleeponset,andsleepefficiencywasmaintainedinallgroupsatsixmonths,whencomparedwithbaseline.TheremissionratewashigheratsixmonthsamongthegroupsthathadreceivedCBTpluszolpidemduringtheinitialsixweeksofthetrial,thanamongthegroupsthathadinitiallyreceivedCBTalone(56versus43percent).

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    Takentogether,theevidenceindicatesthatCBTalone,drugtherapyalone,andcombinationtherapyallimprovemeasuresofinsomnia(eg,waketimeaftersleeponset)withinweeksofinitiatingthetherapy.ContinuingCBTaloneafterthecompletionofinitialtherapyappearstobethebestoptionformaintainingimprovementlongterm.CBTalsoincreasesthelikelihoodthatthemedicationcaneventuallybetapered[115].

    Ifsleeprestrictiontherapyiscombinedwithhypnoticmedication,cliniciansshouldbeawarethatthecombinationofchronicpartialsleepdeprivationandmedicationhangovercouldsignificantlyincreasedaytimesleepinessandbehavioralrisk.(See'Adverseeffects'above.)

    Theevidenceisinsufficienttojustifycombinationtherapyasroutineinitialmanagementforinsomniapatients.ManypatientswillimprovewithCBTalone,withoutpharmacologictherapy.

    FOLLOWUPIfthetreatmentissuccessful,patientswillreportbothimprovedsleepatnightandimprovementofdaytimedeficits.Discontinuationofthemedicationshouldbeconsideredinanypatientwhoisreceivingpharmacologictherapyaloneorcombinationtherapy.

    Patientswhohavelittleimprovementduringtheinitialtrialofcognitivebehavioraltherapy,pharmacologictherapy,orcombinationtherapymayhaveothercausesofpoorsleep.Adherencewiththeprescribedtherapyshouldbeconfirmedandthenadditionaldiagnosticevaluationperformed.Suchpatientsoftenrequirereferraltoasleepdisorderscentertobeevaluatedforsleepapneaorotherunderlyingcauses.Suchanevaluationisindicatedearlier(ie,priortothefailureofroutinetherapy)ifthereisclinicalsuspicionthatsleepapneaoranotheretiologyexists.(See"Clinicalfeaturesanddiagnosisofinsomnia",sectionon'Othersleepdisorders'.)

    Otherpatientsmayrespondinitiallytopharmacologictherapybutlaterrelapsewhilestilltakingthesamedrug.Insuchcases,clinicalreevaluationiswarrantedtodeterminewhethertherearelifestylechangesorothernewfactorsthatmaybeexacerbatingtheinsomnia.Therearelimiteddataontoleranceandcrosstoleranceamongvariousmedicationsusedtotreatinsomnia,butsomeamountoftolerancelikelyexistsforthebenzodiazepinesandnonbenzodiazepinereceptoragonists[116118].Treatmentdecisionsinpatientswithpossibletolerancemustbeindividualized,takingintoaccountfactorssuchassideeffects,durationoftherapy,priortherapies,andavailabilityofalternativeoptions,suchasbehavioraltherapy.Iflifestylechangesandotherexacerbatingfactorshavebeenruledout,weconsiderthefollowingapproaches:

    INSOMNIARELATEDTOCIRCADIANRHYTHMDISORDERSPatientswhohaveinsomniaassociatedwithacircadianrhythmdisordermaybenefitfromphototherapyorchronotherapy.

    PhototherapyExposuretobrightlightwhenawakeningisaneffectivetherapyforpatientswhosesleeponsetinsomniaisduetodelayedsleepphasesyndrome,aconditioninwhichtheonsetofsleepisdelayedbecausetheindividual'ssleepwakerhythmislongerthan24hours[83].(See"Classificationofsleepdisorders",sectionon'Circadianrhythmsleepwakedisorders'.)

    Patientsundergoingphototherapysitinfrontof5000to10,000luxlightbox(oroutdoorsorinfrontofawindowwithsunlight)for30to40minutesuponawakening(averageindoorlightingis300to500lux,averagesunnysummerdayis100,000lux).Inaddition,theymarkedlyreducetheirexposuretobrightlightintheevening(eg,theymaykeeptheirshadesdownandindoorlightsdim).Aresponsetotherapyisgenerallyevidentaftertwotothreeweeks[119].Indefinitetreatmentisfrequentlynecessarytomaintainthebenefits.Inlessseverecases,consistentawakeningatagiventimeinthemorning,followedbyphysicalactivitywithexposuretooutdoorlight(eg,awalkoutside,sittingnexttoawindowwiththeshadesandcurtainsopen),maybesufficientevenonacloudyday.

    Inapatientwhocomplainsoflossofefficacyfromashortactingnonbenzodiazepine,suchaszolpidem,wesuggestatrialofalongeractingdrug,suchaseszopiclone,orswitchtomedicationfromadifferentclass,suchaslowdosedoxepin.

    Somepatientsmaybenefitfromadrugholiday,afterwhichtimetheymayagainrespondtotheinitialdrugtherapy.

    Institutionofbehavioraltherapycanhelptransitionsomepatientsawayfromlongtermuseofabenzodiazepineornonbenzodiazepinereceptoragonist.(See'Behavioraltherapy'above.)

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    Phototherapymayalsobebeneficialtopatientswhoseinsomniaisduetoadvancedsleepphasesyndrome,aconditioninwhichtheindividualdesiressleepearlyandawakensearlybecausetheirsleepwakerhythmhasshiftedearlier.Inthissituation,exposuretobrightlightintheeveningcanhelpdelaysleeponset.

    ChronotherapyChronotherapyisabehavioralstrategythatcanbeusedinpatientswithdelayedsleepphasesyndrome.Itreferstotheintentionaldelayofsleeponsetbytwotothreehoursonsuccessivedaysuntilthedesiredbedtimeisreached.Afterthis,thepatientstrictlyenforcesthissleepwakeschedule.Onestudyreportedahighsuccessrateamongpatientswithdelayedsleepphasesyndrome,evenwhenthedisorderhadbeenpresentformanyyears[120].

    Chronotherapyrequiresclosemonitoringofschedules.Patientsmustcontinuetodelaytheirsleeptimesuntilthedesiredbedtimehasbeenreached,whichmeansadheringtoseveralafternoonandeveningbedtimes.Thisisanarduousscheduleandpatientsgenerallydonotadheretotheirscheduleafteradjustmentandlapseintotheiroriginalsleephabits.Insomeindividuals,chronotherapycanresultinafreerunningcircadianrhythmandshouldthereforebeusedwithcaution.

    JETLAGJetlagisacommoncauseofinsomniathatisdiscussedseparately.(See"Jetlag".)

    INFORMATIONFORPATIENTSUpToDateofferstwotypesofpatienteducationmaterials,"TheBasics"and"BeyondtheBasics."TheBasicspatienteducationpiecesarewritteninplainlanguage,atthe5 to6gradereadinglevel,andtheyanswerthefourorfivekeyquestionsapatientmighthaveaboutagivencondition.Thesearticlesarebestforpatientswhowantageneraloverviewandwhoprefershort,easytoreadmaterials.BeyondtheBasicspatienteducationpiecesarelonger,moresophisticated,andmoredetailed.Thesearticlesarewrittenatthe10 to12 gradereadinglevelandarebestforpatientswhowantindepthinformationandarecomfortablewithsomemedicaljargon.

    Herearethepatienteducationarticlesthatarerelevanttothistopic.Weencourageyoutoprintoremailthesetopicstoyourpatients.(Youcanalsolocatepatienteducationarticlesonavarietyofsubjectsbysearchingon"patientinfo"andthekeyword(s)ofinterest.)

    SUMMARYANDRECOMMENDATIONS

    th th

    th th

    Basicstopic(see"Patientinformation:Insomnia(TheBasics)")

    BeyondtheBasicstopics(see"Patientinformation:Insomnia(BeyondtheBasics)"and"Patientinformation:Insomniatreatments(BeyondtheBasics)")

    Allpatientswithinsomniashouldreceivetherapyforanymedicalcondition,psychiatricillness,substanceabuse,orsleepdisorderthatmaybeprecipitatingorexacerbatingtheinsomnia.Theyshouldalsoreceivegeneralbehavioralsuggestions,particularlyadviceregardingsleephygiene(table2)andstimuluscontrol(table3).(See'Generalapproach'above.)

    Forpatientswhocontinuetohaveinsomniathatissevereenoughtorequireanintervention,wesuggestcognitivebehavioraltherapy(CBT)astheinitialtherapy(Grade2B).AnalternativetypeofbehavioraltherapyisreasonableifCBTisnotavailable.(See'Generalapproach'aboveand'Behavioraltherapy'above.)

    ForpatientswhoseinsomniacontinuestobesevereenoughtorequireaninterventiondespiteCBT,wesuggesttheadditionofamedicationtoCBTratherthanchangingtoastrategyofmedicationalone(Grade2B).(See'Generalapproach'aboveand'Medications'above.)

    Forpatientswhorequiremedicationforsleeponsetinsomnia,wesuggestashortactingmedicationratherthanalongeractingagent(Grade2C).(See'Choiceofanagent'above.)

    Forpatientswhorequiremedicationforsleepmaintenanceinsomnia,wesuggestalongeractingmedicationratherthanashortactingagent(Grade2C).Alternatively,anewformulationofzolpidemhasbeenapprovedforuseinthemiddleofthenight.Patientsshouldbewarnedabouttheriskfordaytimedrowsiness,impaireddriving,dizziness,andlightheadedness.(See'Choiceofanagent'above.)

    Patientsgivenbehavioralpluspharmacologictherapyshouldcontinuebehavioraltherapyforsixtoeight

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    UseofUpToDateissubjecttotheSubscriptionandLicenseAgreement.

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    (galantamine),Epilepsy(topiramate)].Contributordisclosuresarereviewedforconflictsofinterestbytheeditorialgroup.Whenfound,theseareaddressedbyvettingthroughamultilevelreviewprocess,andthroughrequirementsforreferencestobeprovidedtosupportthecontent.AppropriatelyreferencedcontentisrequiredofallauthorsandmustconformtoUpToDatestandardsofevidence.Conflictofinterestpolicy