Download - IECA Y ARA II

Transcript
  • 14/7/2015 Reninangiotensinsysteminhibitioninthetreatmentofhypertension

    http://www.uptodate.com/contents/reninangiotensinsysteminhibitioninthetreatmentofhypertension?topicKey=NEPH%2F3815&elapsedTimeMs=4&sour 1/13

    OfficialreprintfromUpToDate www.uptodate.com2015UpToDate

    AuthorsJohannesFEMann,MDKarlFHilgers,MD

    SectionEditorsGeorgeLBakris,MDNormanMKaplan,MD

    DeputyEditorJohnPForman,MD,MSc

    Reninangiotensinsysteminhibitioninthetreatmentofhypertension

    Alltopicsareupdatedasnewevidencebecomesavailableandourpeerreviewprocessiscomplete.Literaturereviewcurrentthrough:Jun2015.|Thistopiclastupdated:Oct08,2014.

    INTRODUCTIONInhibitorsofthereninangiotensinsystem(RAS),includingangiotensinconvertingenzyme(ACE)inhibitors,angiotensinIIreceptorblockers(ARBs),anddirectrenininhibitorsarecommonlyusedinthetreatmentofhypertension.TheroleoftheRASinhypertensionandtheuseofspecificinhibitorsofthissystemtotreathypertensionwillbereviewedhere.

    TheuseofRASinhibitorsinpatientswithkidneydiseaseanddiabetesarediscussedseparately.(See"Choiceofdrugtherapyinprimary(essential)hypertension:Recommendations"and"Antihypertensivetherapyandprogressionofnondiabeticchronickidneydiseaseinadults"and"Treatmentofhypertensioninpatientswithdiabetesmellitus"and"Treatmentofdiabeticnephropathy".)

    Theimportanceoflocal(ie,tissue)RASactivityinlowreninhypertensionandtheeffectsofangiotensinIIontheheartarepresentedelsewhere.(See"Lowreninprimary(essential)hypertension"and"ActionsofangiotensinIIontheheart".)

    ANGIOTENSINCONVERTINGENZYMEINHIBITORSSincetheintroductionofcaptoprilin1977[1],angiotensinconvertingenzyme(ACE)inhibitorshavebecomewidelyusedforthetreatmentofhypertensionandthreeofitsmajorcomplications:acutemyocardialinfarction[2],congestiveheartfailure[3],andchronickidneydisease.Fiftyto60percentofCaucasianpatientshaveagoodresponsetomonotherapywithACEinhibitors,aresponseratesimilartootherfirstlineantihypertensivedrugs[4].ACEinhibitorshavetheadditionaladvantagesofhavingamorefavorablesideeffectprofilethansympatheticblockers,betablockers,anddiuretics[5],andofproducingmoreregressionofleftventricularhypertrophythanbetablockers[6].(See"Clinicalimplicationsandtreatmentofleftventricularhypertrophyinhypertension",sectionon'Choiceofdrugs'.)

    Guidelinesissuedin2009bytheEuropeanSocietyofHypertension[7],andin2011byNICE(NationalInstituteforHealthandClinicalExcellenceofGreatBritain)[8],recommendtheuseofanACEinhibitororangiotensinIIreceptorblocker(ARB)inyoungerandnonblackpatients[9].However,thisrecommendationisbaseduponrelativelysmallcrossovertrials[10].

    SpecificindicationsforuseThereareanumberofsettingsinwhichACEinhibitorsaretheantihypertensivedrugsofchoicebecauseofpossiblebenefitsinadditiontoloweringthebloodpressure.(See"Choiceofdrugtherapyinprimary(essential)hypertension:Recommendations",sectionon'Indicationsforspecificdrugs'.)

    Theseinclude:

    Heartfailurewithreducedejectionfraction(HFrEF)[3].(See"ACEinhibitorsinheartfailureduetosystolicdysfunction:Therapeuticuse"and"Useofbetablockersandivabradineinheartfailurewithreducedejectionfraction"and"Useofdiureticsinpatientswithheartfailure"and"Useofmineralocorticoidreceptorantagonistsinsystolicheartfailure".)

    Proteinuricchronickidneydisease,bothdiabeticandnondiabetic[11].(See"Antihypertensivetherapyandprogressionofnondiabeticchronickidneydiseaseinadults"and"Moderatelyincreasedalbuminuria(microalbuminuria)intype1diabetesmellitus"and"Moderatelyincreasedalbuminuria(microalbuminuria)intype2diabetesmellitus"and"Treatmentofhypertensioninpatientswithdiabetesmellitus".)

  • 14/7/2015 Reninangiotensinsysteminhibitioninthetreatmentofhypertension

    http://www.uptodate.com/contents/reninangiotensinsysteminhibitioninthetreatmentofhypertension?topicKey=NEPH%2F3815&elapsedTimeMs=4&sour 2/13

    AntihypertensiveresponseThedeclineinbloodpressureseenwithACEinhibitorsappearstobeprimarilyduetodecreasedformationofangiotensinII,butdecreaseddegradationofkininscouldcontributebybothdirectvasodilationandincreasingtheproductionofvasodilatorprostaglandins[12].

    BlackpatientsmaybelesssensitivethanwhitepatientstoACEinhibitorsasmonotherapyforhypertension(figure1)[13].AlthoughACEinhibitorsarerelativelyineffectiveasmonotherapyinblacks,theadditionofevenalowdoseofathiazidediuretictoanACEinhibitorleadstoafallinbloodpressurethatiscomparabletothatseeninwhitepatients[14].(See"Treatmentofhypertensioninblacks".)

    TheutilityofACEinhibitorswithdiureticsisnotlimitedtoblackpatientssincethesedrugshaveasynergisticeffect,attaininggoalbloodpressureinupto85percentofpatientswithmildhypertension[14].TheantihypertensiveresponsetodiureticsisoftenlimitedbythehypovolemiainducedincreaseinreninreleaseandsubsequentangiotensinIIproduction[15]thiseffectispreventedbyconvertingenzymeinhibition,leadingtoamoreprominentreductioninbloodpressure.(See"Useofthiazidediureticsinpatientswithprimary(essential)hypertension".)Forsimilarreasons,dietarysodiumrestrictioncanalsoenhancetheresponsetoanACEinhibitor[16].(See"Saltintake,saltrestriction,andprimary(essential)hypertension",sectionon'Responsetoantihypertensivedrugs'.)

    ACEinhibitorsminimizesomeofthemetabolicchangesinducedbydiuretictherapy.Hypokalemia,forexample,islessprominentbecausethereductioninangiotensinIIformationinducedbytheACEinhibitorleadstodecreasedsecretionofaldosterone.ACEinhibitorsalsodonotinduceglucoseintolerance,hyperlipidemia,orhyperuricemia,mayincreaseinsulinsensitivity,andmayminimizeorpreventdiureticinducedelevationsinserumglucose,cholesterolanduricacidlevels[17].

    Apartfromdiuretics,calciumchannelblockerscanbeusedeffectivelywithACEinhibitors,and,asshownintheACCOMPLISHtrial,mayhaveclinicaladvantagesoverdiureticswhenachievedbloodpressureissimilar.CombinationofanACEinhibitorwithabetablockermaybelessusefulbecauseofinferiorantihypertensiveactivitycomparedwithotherACEinhibitorcombinations[18].Thisrelativelackofefficacymaybedueinparttosimilarmechanismsofaction,asangiotensinIIformationandreninsecretionarerespectivelyreduced.(See"Choiceofdrugtherapyinprimary(essential)hypertension:Recommendations",sectionon'ACCOMPLISHtrial'.)

    DoseAswithotherantihypertensiveagents,properdosecanminimizetheincidenceofsideeffects(table1).TominimizetheriskoffirstdosehypotensionduetoanabruptdeclineinangiotensinIIlevels,thepatientshouldnotbevolumedepleted.Theinitialdosecanbereducedbyonehalfinelderlypatientsorthosewithheartfailurewhoareathigherriskforhypotension.SideeffectsotherthanthoserelatedtohypotensioncanoccurwithACEinhibitors,themostcommonbeingcough[19],lesscommonlyhyperkalemia,andrarelyangioedema[20].ACEinhibitorsarecontraindicatedduringpregnancy[21].(See"MajorsideeffectsofangiotensinconvertingenzymeinhibitorsandangiotensinIIreceptorblockers".)

    ThedurationofactionvarieswithdifferentACEinhibitors.SomeACEinhibitorscanbegivenoncedaily(eg,trandolapril,lisinopril,andbenazepril).Theuseoflongeractingagentsoncedailyshouldimprovepatientcompliance,reducecosts,maintainsmoothercontrol,andensurethattheabruptriseinpressureuponawakeningintheearlymorningisblunted,hopefullytherebyreducingtheincidenceofseriouscardiovasculareventsatthistime.

    Aftertheinitiationoftherapy,thepatientshouldbereexaminedinafewweekstoallowthefullantihypertensiveeffecttooccur.Ifthereisnoorlittlefallinbloodpressurewithanadequatedose,thedrugcanbestoppedanddifferentclassofdrugstarted,aconceptcalled"sequentialmonotherapy."Alternatively,anotherdrugmaybeadded,suchasacalciumchannelblocker.(See"Choiceofdrugtherapyinprimary(essential)hypertension:Recommendations",sectionon'Sequentialmonotherapy'.)

    Afteramyocardialinfarctioninmostpatients,particularlythosewithheartfailureorreducedsystolicfunction[2].(See"Angiotensinconvertingenzymeinhibitorsandreceptorblockersinacutemyocardialinfarction:Recommendationsforuse".)

  • 14/7/2015 Reninangiotensinsysteminhibitioninthetreatmentofhypertension

    http://www.uptodate.com/contents/reninangiotensinsysteminhibitioninthetreatmentofhypertension?topicKey=NEPH%2F3815&elapsedTimeMs=4&sour 3/13

    Ifthepatient'sbloodpressureisreducedbytheACEinhibitorbutthegoalpressureisnotachieved,thedosecanbegraduallyincreasedtothemaximumlevelsnotedinthetable(table1).However,theadditionofaseconddrugfromadifferentclasswillprovidemuchgreaterantihypertensiveeffect[22].

    Inpatientswithextensiveatherosclerosisorrenalinsufficiencywhoaremorelikelytohaverenovascularstenoses,arepeatplasmacreatinineconcentrationshouldbeobtainedwithinonetotwoweekstoensurethatrenalperfusionhasbeenmaintained.However,amodestandnonprogressiveincreaseintheplasmacreatinineinsuchpatientsshouldnotpromptdiscontinuationoftherapy.(See"RenaleffectsofACEinhibitorsinhypertension",sectionon'Renovascularhypertension'.)

    ANGIOTENSINIIRECEPTORBLOCKERSAngiotensinIIreceptorblockers(ARBs)interferewiththereninangiotensinsystembyimpairingthebindingofangiotensinIItotheAT1receptoronthecellmembrane,therebyinhibitingtheactionofangiotensinII[23].BlockadeoftheactionofangiotensinIIleadstoelevationsinplasmalevelsofrenin,angiotensinI,andangiotensinII.However,thisbuildupofprecursorsdoesnotoverwhelmthereceptorblockade,asevidencedbyapersistentfallinbothbloodpressureandplasmaaldosteronelevels[24].

    DifferencesbetweenACEinhibitorsandARBsTherearesubstantialpharmacologicaldifferencesintheactionsofangiotensinconvertingenzyme(ACE)inhibitorsandARBs,butfewclinicaldifferenceshavebeendocumented.Atleastthreefactorsmaycontributetothepharmacologicaldifferences(figure2):

    EfficacyanddoseTheARBshaveaneffectsimilartothatseenwithmonotherapywithotherantihypertensivedrugs(table1)[26].However,severalstudieshaveshownthatlosartan,whengivenoncedaily,doesnotcontrolbloodpressuretothesamemagnitudeasotherARBs(irbesartan,telmisartan,candesartan,andvalsartan)[2730].Ontheotherhand,losartanproducesaslightfallinplasmauricacidthatdoesnotoccurwiththeotherARBs,aneffectthatisduetoenhanceduricacidexcretion[31].Thisappearstobemediatedatleastinpartbydirectinhibitionoftheproximalurateanionexchangerthatisresponsibleforuratereabsorption[32].

    TheantihypertensiveefficacyofARBsappearstoberoughlyequivalenttothatoftheACEinhibitors.Ametaanalysisof61studiesthatdirectlycomparedangiotensinIIreceptorblockersandACEinhibitorsreportednodifferenceintheantihypertensiveeffectsoftheseagents[26].

    Inaddition,theeffectsofARBsandACEinhibitorsoncardiovasculareventsappearsimilar.TheONTARGETtrialcomparedtelmisartan(80mg/day),ramipril(10mg/day),andcombinationtherapy(80+10mg/day)withbothagentsin25,620patientswithvasculardiseaseordiabetes[33].Theprimaryoutcomewasdeathfromcardiovascularcauses,myocardialinfarction,stroke,orhospitalizationforheartfailure.Achievedmeanbloodpressurewaslowerinpatientswhoreceivedtelmisartancomparedwithramipril(by0.9/0.6mmHg)andinpatientswhoreceivedbothagentscomparedwithramipril(2.4/1.4mmHg).Thecardiovascularoutcomesweresimilarinallthreegroups,whilecoughwasmorecommonwithramiprilandbothhyperkalemiaandacutekidneyinjuryweremorecommonwithcombinedtherapy.(See"MajorsideeffectsofangiotensinconvertingenzymeinhibitorsandangiotensinIIreceptorblockers".)

    Inaddition,ametaanalysisofninetrialsand11,007patientsthatdirectlycomparedACEinhibitorswithARBsin

    Angiotensinconvertingenzymeisakininase.Thus,inhibitingthisenzyme,whichnormallydegradesbradykinin,withanACEinhibitorleadstoincreasedkininlevels,aneffectnotseenwithanARB.ThisislikelyresponsibleforthecoughthatmaybeseenwithACEinhibitors(butnotwithARBs),althoughhighbradykininlevelsmayalsoprovideadditionalvasodilationandotherbenefitsnotobservedwithARBs.

    BydecreasingangiotensinIIproduction,ACEinhibitorsreducetheeffectofbothAT1andAT2receptorsonlytheformerareinhibitedbytheARBs.

    Intheheart,kidney,andperhapsthebloodvessels,theproductionofangiotensinIImaybecatalyzedbyenzymesotherthanangiotensinconvertingenzyme,suchaschymase[25].TheeffectoftheangiotensinIIproducedbythisreactioncanbeinhibitedbytheARBsbutnotbyACEinhibitors.However,theroleofthesenonACEenzymesforthegenerationofangiotensinIIinvivo,ifany,isuncertain.

  • 14/7/2015 Reninangiotensinsysteminhibitioninthetreatmentofhypertension

    http://www.uptodate.com/contents/reninangiotensinsysteminhibitioninthetreatmentofhypertension?topicKey=NEPH%2F3815&elapsedTimeMs=4&sour 4/13

    hypertensivepatientsfoundsimilarratesofallcausemortalityandcardiovascularmortality[34].Incontrast,drugwithdrawalduetoadverseeventswassignificantlymorefrequentwithACEinhibitors(oneadditionalwithdrawalfromtherapyforevery55patientstreatedwithACEinhibitorsoverfouryears),mostlyduetodrycough.Thus,ARBsareareasonablealternativetoACEinhibitortherapyinhypertensivepatients.

    Aswithotheragentsthatinhibitthereninangiotensinsystem,theefficacyofARBsisenhancedbyconcomitantadministrationoflowdosesofadiuretic[35],andbyareductionindietarysodiumintake.AswithACEinhibitors,ARBsappeartominimizethehypokalemiaandhyperuricemiainducedbydiuretictherapy[35].(See"Saltintake,saltrestriction,andprimary(essential)hypertension",sectionon'Responsetoantihypertensivedrugs'.)

    SIDEEFFECTSBothangiotensinconvertingenzyme(ACE)inhibitorsandangiotensinIIreceptorblockers(ARBs)aregenerallywelltolerated.CoughandangioedemaarelesscommonwithARBs[33].BothACEinhibitorsandARBsarecontraindicatedinpregnancy.Theseissuesarediscussedindetailseparately.(See"MajorsideeffectsofangiotensinconvertingenzymeinhibitorsandangiotensinIIreceptorblockers"and"Angiotensinconvertingenzymeinhibitorsandreceptorblockersinpregnancy".)

    ACEinhibitorsplusARBsAseparateissueisthesideeffectsassociatedwithcombinedACEinhibitor/ARBtherapycomparedwitheitherdrugalone.TheONTARGETtrialcitedaboveofhighriskpatients[33,36]foundasignificantincreaseinadverseeffects(includingapossibleincreaseinmortality)withcombinedtherapycomparedwithanACEinhibitoralone.Asaresult,combinedtherapyisnotrecommendedforthetreatmentofhypertension.

    Thedatasupportingadverseeffectsandthepossibleroleofcombinedtherapytoslowprogressioninpatientswithproteinuricchronickidneydiseasearediscussedelsewhere.(See"MajorsideeffectsofangiotensinconvertingenzymeinhibitorsandangiotensinIIreceptorblockers",sectionon'CombinationofACEinhibitorsandARBs'and"Antihypertensivetherapyandprogressionofnondiabeticchronickidneydiseaseinadults",sectionon'CombinationofACEinhibitorsandARBs'.)

    DIRECTRENININHIBITORSThefirsteffectiveoraldirectrenininhibitor,aliskiren,becameavailableintheUnitedStatesinMarch2007.Aliskirenlowersbloodpressuretoadegreecomparabletomostotheragents[37].Anumberofstudieshaveevaluatedthebloodpressureloweringeffectofaliskirenincombinationwithotherantihypertensivedrugs[3740].Inonereport,thecombinationofmaximumdosesofaliskirenandvalsartandecreasedbloodpressuremorethanmaximumdosesofeitheragentalonebutnotmorethanwouldbeexpectedwithdualtherapyusingdrugsfromdifferentclasses[41].Aliskiren,aswithotherinhibitorsofthereninangiotensinsystem,shouldnotbeusedinpregnancy.

    IntheAVOIDtrial,aliskirenpluslosartanwasassociatedwithasignificant20percentgreaterreductioninproteinuriacomparedwithlosartanaloneinpatientswithtype2diabetesandnephropathy,intheabsenceofasignificantlygreatereffectonbloodpressure[42].However,thiseffectonproteinuriadidnottranslateintoaclinicalbenefit.IntheALTITUDEtrial,8600patientswithtype2diabetesandkidneydiseasealreadytakingeitheranangiotensinconvertingenzyme(ACE)inhibitororangiotensinIIreceptorblocker(ARB)wererandomlyassignedtoadditionaltherapywithaliskirenorplacebo[43].TheALTITUDEtrialwasstoppedearlybecauseoffutility(nobenefitontheprimarycardiovascularandrenaloutcomes)andbecausealiskirentherapyproducedanonsignificantlyhigherrateofadverseevents(ie,nonfatalstroke,hypotension).TheALTITUDEtrialisdiscussedindetailelsewhere.(See"Treatmentofdiabeticnephropathy",sectionon'Aliskirenplusangiotensininhibition'.)

    TheeffectofaliskirenonprogressionofatheroscleroticcoronaryarterydiseaseinpatientswithcontrolledhypertensionwasexaminedintheAliskirenQuantitativeAtherosclerosisRegressionIntravascularUltrasoundStudy(AQUARIUS)[44].Inthistrial,613patientswithasystolicbloodpressurebetween125and139mmHg(mostofwhomweretreatedwithantihypertensivemedications)andtwoothercardiovascularriskfactorswererandomlyassignedtoaliskiren(300mg/day)orplacebo.After18months,theatheroscleroticburdenandprogressionofatherosclerosis(measuredbycoronaryintravascularultrasound)wassimilarbetweenthegroups.Inasecondaryanalysisbaseduponasmallnumberofevents,aliskirenappearedtoreducetherateofcardiovascularevents.However,thisanalysisexcludeddiabeticpatientswhoweretreatedwithangiotensininhibitors(approximately15percentofthestudypopulation),assuchpatientswereremovedfromthestudyafter

  • 14/7/2015 Reninangiotensinsysteminhibitioninthetreatmentofhypertension

    http://www.uptodate.com/contents/reninangiotensinsysteminhibitioninthetreatmentofhypertension?topicKey=NEPH%2F3815&elapsedTimeMs=4&sour 5/13

    publicationoftheALTITUDEtrial[45].Inaddition,adverseeventsweremorecommonwithaliskiren.

    AnincreasedriskofhyperkalemiawhenaliskireniscombinedwithACEinhibitorsorARBshasbeendescribedintheALTITUDEtrialandinotherstudies[43,46].Thus,aliskirenshouldnotbecombinedwithACEinhibitorsorARBs[47].

    SUMMARYANDRECOMMENDATIONS

    Inhibitorsofthereninangiotensinsystem,includingangiotensinconvertingenzyme(ACE)inhibitors,angiotensinIIreceptorblockers(ARBs),anddirectrenininhibitorsarecommonlyusedinthetreatmentofhypertension.(See'Introduction'above.)

    ThereareanumberofsettingsinwhichACEinhibitorsaretheantihypertensivedrugsofchoicebecauseofpossiblebenefitsinadditiontoloweringthebloodpressure(see'Specificindicationsforuse'above):

    Heartfailurewithreducedejectionfraction(HFrEF)

    Proteinuricchronickidneydisease,bothdiabeticandnondiabetic

    Afteramyocardialinfarctioninmostpatients,particularlythosewithheartfailureorreducedsystolicfunction

    ProperdoseofACEinhibitorscanminimizetheincidenceofsideeffects(table1).ThedurationofactionvarieswithdifferentACEinhibitors.SomeACEinhibitorscanbegivenoncedaily(eg,trandolapril,lisinopril,andbenazepril).(See'Dose'above.)

    TherearepharmacologicaldifferencesintheactionsofACEinhibitorsandARBs.ExceptforthecoughassociatedwithACEinhibitors,thesepharmacologicaldifferencesarenotassociatedwithclinicallymeaningfuldifferencesintherapeuticeffects.Atleastthreefactorsmaycontributetothepharmacologicaldifferences(figure2)(see'DifferencesbetweenACEinhibitorsandARBs'above):

    Angiotensinconvertingenzymeisakininase.Thus,inhibitingthisenzyme,whichnormallydegradesbradykinin,withanACEinhibitorleadstoincreasedkininlevels,aneffectnotseenwithanARB.ThisislikelyresponsibleforthecoughthatmaybeseenwithACEinhibitors(butnotwithARBs),althoughhighbradykininlevelsmayalsoprovideadditionalvasodilationandotherbenefitsnotobservedwithARBs.

    BydecreasingangiotensinIIproduction,ACEinhibitorsreducetheeffectofbothAT1andAT2receptorsonlytheformerareinhibitedbytheARBs.

    Intheheart,kidney,andperhapsthebloodvessels,theproductionofangiotensinIImaybecatalyzedbyenzymesotherthanangiotensinconvertingenzyme,suchaschymase.TheeffectoftheangiotensinIIproducedbythisreactioncanbeinhibitedbytheARBsbutnotbyACEinhibitors.

    TheARBshaveaneffectsimilartothatseenwithmonotherapywithotherantihypertensivedrugs,includingACEinhibitors(table1).

    TheantihypertensiveeffectofbothACEinhibitorsandARBsisenhancedbyconcomitantadministrationoflowdosesofadiuretic,andbyareductionindietarysodiumintake.Bothdrugsalsoappeartominimizethehypokalemiaandhyperuricemiainducedbydiuretictherapy.(See'Dose'aboveand'Efficacyanddose'aboveand"Saltintake,saltrestriction,andprimary(essential)hypertension",sectionon'Responsetoantihypertensivedrugs'.)

    BothACEinhibitorsandARBsaregenerallywelltolerated.Sideeffectsotherthanthoserelatedtohypotensioncanoccurwithbothdrugs,includinghyperkalemiaandrarelyangioedema,aswellasacutekidneyinjuryinpatientswithloweffectivearterialbloodvolume(eg,diarrhea,vomiting,andheartfailure).CoughisacommonsideeffectofACEinhibitors.ACEinhibitorsandARBsarecontraindicatedduring

  • 14/7/2015 Reninangiotensinsysteminhibitioninthetreatmentofhypertension

    http://www.uptodate.com/contents/reninangiotensinsysteminhibitioninthetreatmentofhypertension?topicKey=NEPH%2F3815&elapsedTimeMs=4&sour 6/13

    UseofUpToDateissubjecttotheSubscriptionandLicenseAgreement.

    REFERENCES

    1. OndettiMA,RubinB,CushmanDW.Designofspecificinhibitorsofangiotensinconvertingenzyme:newclassoforallyactiveantihypertensiveagents.Science1977196:441.

    2. PfefferMA,BraunwaldE,MoyLA,etal.Effectofcaptoprilonmortalityandmorbidityinpatientswithleftventriculardysfunctionaftermyocardialinfarction.Resultsofthesurvivalandventricularenlargementtrial.TheSAVEInvestigators.NEnglJMed1992327:669.

    3. Effectofenalaprilonsurvivalinpatientswithreducedleftventricularejectionfractionsandcongestiveheartfailure.TheSOLVDInvestigators.NEnglJMed1991325:293.

    4. NeatonJD,GrimmRHJr,PrineasRJ,etal.TreatmentofMildHypertensionStudy.Finalresults.TreatmentofMildHypertensionStudyResearchGroup.JAMA1993270:713.

    5. CroogSH,LevineS,TestaMA,etal.Theeffectsofantihypertensivetherapyonthequalityoflife.NEnglJMed1986314:1657.

    6. KlingbeilAU,SchneiderM,MartusP,etal.Ametaanalysisoftheeffectsoftreatmentonleftventricularmassinessentialhypertension.AmJMed2003115:41.

    7. ManciaG,LaurentS,AgabitiRoseiE,etal.ReappraisalofEuropeanguidelinesonhypertensionmanagement:aEuropeanSocietyofHypertensionTaskForcedocument.JHypertens200927:2121.

    8. KrauseT,LovibondK,CaulfieldM,etal.Managementofhypertension:summaryofNICEguidance.BMJ2011343:d4891.

    9. ManciaG,DeBackerG,DominiczakA,etal.2007ESHESCPracticeGuidelinesfortheManagementofArterialHypertension:ESHESCTaskForceontheManagementofArterialHypertension.JHypertens200725:1751.

    10. DickersonJE,HingoraniAD,AshbyMJ,etal.Optimisationofantihypertensivetreatmentbycrossoverrotationoffourmajorclasses.Lancet1999353:2008.

    11. KidneyDiseaseOutcomesQualityInitiative(K/DOQI).K/DOQIclinicalpracticeguidelinesonhypertensionandantihypertensiveagentsinchronickidneydisease.AmJKidneyDis200443:S1.

    12. LinzW,WiemerG,GohlkeP,etal.Contributionofkininstothecardiovascularactionsofangiotensinconvertingenzymeinhibitors.PharmacolRev199547:25.

    13. MatersonBJ,RedaDJ,CushmanWC,etal.Singledrugtherapyforhypertensioninmen.Acomparisonofsixantihypertensiveagentswithplacebo.TheDepartmentofVeteransAffairsCooperativeStudyGrouponAntihypertensiveAgents.NEnglJMed1993328:914.

    14. TownsendRR,HollandOB.Combinationofconvertingenzymeinhibitorwithdiureticforthetreatmentofhypertension.ArchInternMed1990150:1175.

    15. VaughanEDJr,CareyRM,PeachMJ,etal.ThereninresponsetodiuretictherapylAlimitationofantihypertensivepotential.CircRes197842:376.

    16. SlagmanMC,WaandersF,HemmelderMH,etal.Moderatedietarysodiumrestrictionaddedtoangiotensinconvertingenzymeinhibitioncomparedwithdualblockadeinloweringproteinuriaandbloodpressure:randomisedcontrolledtrial.BMJ2011343:d4366.

    17. PollareT,LithellH,BerneC.Acomparisonoftheeffectsofhydrochlorothiazideandcaptoprilonglucose

    pregnancy.(See'Sideeffects'aboveand"MajorsideeffectsofangiotensinconvertingenzymeinhibitorsandangiotensinIIreceptorblockers".)

    CombinedtherapywithbothanACEinhibitorandARBisnotrecommendedforthetreatmentofhypertension.(See'ACEinhibitorsplusARBs'above.)

    Thefirsteffectiveoraldirectrenininhibitor,aliskiren,lowersbloodpressuretoadegreecomparabletomostotheragents.IncombinationwithanACEinhibitororARB,aliskirenincreasestheriskofadverseeffectsanddoesnotlowertheriskofcardiovascularevent.Thus,aliskirenshouldnotbecombinedwithACEinhibitorsorARBs.(See'Directrenininhibitors'above.)

  • 14/7/2015 Reninangiotensinsysteminhibitioninthetreatmentofhypertension

    http://www.uptodate.com/contents/reninangiotensinsysteminhibitioninthetreatmentofhypertension?topicKey=NEPH%2F3815&elapsedTimeMs=4&sour 7/13

    andlipidmetabolisminpatientswithhypertension.NEnglJMed1989321:868.18. PickeringTG.Theuseofangiotensinconvertingenzymeinhibitorsincombinationwithother

    antihypertensiveagents.AmJHypertens19914:73S.19. BangaloreS,KumarS,MesserliFH.Angiotensinconvertingenzymeinhibitorassociatedcough:deceptive

    informationfromthePhysicians'DeskReference.AmJMed2010123:1016.20. BeltramiL,ZanichelliA,ZingaleL,etal.Longtermfollowupof111patientswithangiotensinconverting

    enzymeinhibitorrelatedangioedema.JHypertens201129:2273.21. LiDK,YangC,AndradeS,etal.Maternalexposuretoangiotensinconvertingenzymeinhibitorsinthefirst

    trimesterandriskofmalformationsinoffspring:aretrospectivecohortstudy.BMJ2011343:d5931.22. WaldDS,LawM,MorrisJK,etal.Combinationtherapyversusmonotherapyinreducingbloodpressure:

    metaanalysison11,000participantsfrom42trials.AmJMed2009122:290.23. BurnierM,BrunnerHR.AngiotensinIIreceptorantagonists.Lancet2000355:637.24. GrossmanE,PelegE,CarrollJ,etal.HemodynamicandhumoraleffectsoftheangiotensinIIantagonist

    losartaninessentialhypertension.AmJHypertens19947:1041.25. HuangXR,ChenWY,TruongLD,LanHY.Chymaseisupregulatedindiabeticnephropathy:implicationsfor

    analternativepathwayofangiotensinIImediateddiabeticrenalandvasculardisease.JAmSocNephrol200314:1738.

    26. MatcharDB,McCroryDC,OrlandoLA,etal.Systematicreview:comparativeeffectivenessofangiotensinconvertingenzymeinhibitorsandangiotensinIIreceptorblockersfortreatingessentialhypertension.AnnInternMed2008148:16.

    27. KasslerTaubK,LittlejohnT,ElliottW,etal.ComparativeefficacyoftwoangiotensinIIreceptorantagonists,irbesartanandlosartaninmildtomoderatehypertension.Irbesartan/LosartanStudyInvestigators.AmJHypertens199811:445.

    28. MallionJ,SicheJ,LacourcireY.ABPMcomparisonoftheantihypertensiveprofilesoftheselectiveangiotensinIIreceptorantagoniststelmisartanandlosartaninpatientswithmildtomoderatehypertension.JHumHypertens199913:657.

    29. AnderssonOK,NeldamS.Theantihypertensiveeffectandtolerabilityofcandesartancilexetil,anewgenerationangiotensinIIantagonist,incomparisonwithlosartan.BloodPress19987:53.

    30. HednerT,OparilS,RasmussenK,etal.AcomparisonoftheangiotensinIIantagonistsvalsartanandlosartaninthetreatmentofessentialhypertension.AmJHypertens199912:414.

    31. TikkanenI,OmvikP,JensenHA.ComparisonoftheangiotensinIIantagonistlosartanwiththeangiotensinconvertingenzymeinhibitorenalaprilinpatientswithessentialhypertension.JHypertens199513:1343.

    32. EnomotoA,KimuraH,ChairoungduaA,etal.Molecularidentificationofarenalurateanionexchangerthatregulatesblooduratelevels.Nature2002417:447.

    33. ONTARGETInvestigators,YusufS,TeoKK,etal.Telmisartan,ramipril,orbothinpatientsathighriskforvascularevents.NEnglJMed2008358:1547.

    34. LiEC,HeranBS,WrightJM.Angiotensinconvertingenzyme(ACE)inhibitorsversusangiotensinreceptorblockersforprimaryhypertension.CochraneDatabaseSystRev20148:CD009096.

    35. SofferBA,WrightJTJr,PrattJH,etal.Effectsoflosartanonabackgroundofhydrochlorothiazideinpatientswithhypertension.Hypertension199526:112.

    36. MannJF,SchmiederRE,McQueenM,etal.Renaloutcomeswithtelmisartan,ramipril,orboth,inpeopleathighvascularrisk(theONTARGETstudy):amulticentre,randomised,doubleblind,controlledtrial.Lancet2008372:547.

    37. OhBH,MitchellJ,HerronJR,etal.Aliskiren,anoralrenininhibitor,providesdosedependentefficacyandsustained24hourbloodpressurecontrolinpatientswithhypertension.JAmCollCardiol200749:1157.

    38. PoolJL,SchmiederRE,AziziM,etal.Aliskiren,anorallyeffectiverenininhibitor,providesantihypertensiveefficacyaloneandincombinationwithvalsartan.AmJHypertens200720:11.

    39. VillamilA,ChrysantSG,CalhounD,etal.Renininhibitionwithaliskirenprovidesadditiveantihypertensiveefficacywhenusedincombinationwithhydrochlorothiazide.JHypertens200725:217.

    40. ShafiqMM,MenonDV,VictorRG.Oraldirectrenininhibition:premise,promise,andpotentiallimitationsofanewantihypertensivedrug.AmJMed2008121:265.

  • 14/7/2015 Reninangiotensinsysteminhibitioninthetreatmentofhypertension

    http://www.uptodate.com/contents/reninangiotensinsysteminhibitioninthetreatmentofhypertension?topicKey=NEPH%2F3815&elapsedTimeMs=4&sour 8/13

    41. OparilS,YarowsSA,PatelS,etal.Efficacyandsafetyofcombineduseofaliskirenandvalsartaninpatientswithhypertension:arandomised,doubleblindtrial.Lancet2007370:221.

    42. ParvingHH,PerssonF,LewisJB,etal.Aliskirencombinedwithlosartanintype2diabetesandnephropathy.NEnglJMed2008358:2433.

    43. ParvingHH,BrennerBM,McMurrayJJ,etal.Cardiorenalendpointsinatrialofaliskirenfortype2diabetes.NEnglJMed2012367:2204.

    44. NichollsSJ,BakrisGL,KasteleinJJ,etal.Effectofaliskirenonprogressionofcoronarydiseaseinpatientswithprehypertension:theAQUARIUSrandomizedclinicaltrial.JAMA2013310:1135.

    45. TardifJC,GrgoireJ.Reninangiotensinsysteminhibitionandsecondarycardiovascularprevention.JAMA2013310:1130.

    46. HarelZ,GilbertC,WaldR,etal.Theeffectofcombinationtreatmentwithaliskirenandblockersofthereninangiotensinsystemonhyperkalaemiaandacutekidneyinjury:systematicreviewandmetaanalysis.BMJ2012344:e42.

    47. RajagopalanS,BakrisGL,AbrahamWT,etal.Completereninangiotensinaldosteronesystem(RAAS)blockadeinhighriskpatients:recentinsightsfromreninblockadestudies.Hypertension201362:444.

    Topic3815Version11.0

  • 14/7/2015 Reninangiotensinsysteminhibitioninthetreatmentofhypertension

    http://www.uptodate.com/contents/reninangiotensinsysteminhibitioninthetreatmentofhypertension?topicKey=NEPH%2F3815&elapsedTimeMs=4&sour 9/13

    GRAPHICS

    Antihypertensiveresponsetodifferentdrugsinblacks

    Responseratestosingledrugtherapyforhypertensioninblacksovertheageof60years.Thehighestresponsewasseenwithdiltiazemandhydrochlorothiazide(HCTZ)andthelowestwithcaptopril.Aresponsewasdefinedasadiastolicpressurebelow90mmHgattheendofthetitrationphaseandbelow95mmHgatoneyear.Thepatternofresponsewassimilarbutthesuccessrateforeachdrugwasreducedby5to15percentifgoaldiastolicpressurewerelessthan90mmHgatoneyear.Therewerebetween42and53patientsineachgroup.

    Datafrom:MatersonBJ,RedaDJ,CushmanWC.DepartmentofveteransAffairssingledrugtherapyofhypertensionstudy.Revisedfiguresandnewdata.DepartmentofVeteransAffairsCooperativeStudyGrouponAntihypertensiveAgents.AmJHypertens19958:189.

    Graphic65117Version5.0

  • 14/7/2015 Reninangiotensinsysteminhibitioninthetreatmentofhypertension

    http://www.uptodate.com/contents/reninangiotensinsysteminhibitioninthetreatmentofhypertension?topicKey=NEPH%2F3815&elapsedTimeMs=4&sou 10/13

    Angiotensinconvertingenzyme(ACE)inhibitorsandreceptorantagonistsfortreatmentofadultswithhypertension

    Drug UStradenameGeneric

    preparationavailableinUS

    Usualoraldailydoserange(adult)mg*

    ACEinhibitors

    Benazepril Lotensin Yes 20to80

    Captopril Capoten(onlyavailableinUSasgenericpreparation)

    Yes 25to150intwoorthreedivideddoses

    Cilazapril Inhibace(Canadiantradename)

    No 2.5to5

    Enalapril Vasotec Yes 10to40

    Fosinopril Monopril(onlyavailableinUSasgenericpreparation)

    Yes 20to80

    Lisinopril Prinivil ,Zestril Yes 10to40

    Moexipril Univasc Yes 7.5to30

    Perindopril Aceon Yes 4to8

    Quinapril Accupril Yes 10to40

    Ramipril Altace Yes 2.5to20

    Trandolapril Mavik Yes 2to4

    AngiotensinIIreceptorantagonists

    Azilsartan Edarbi No 80

    Candesartan Atacand No 16to32

    Eprosartan Teveten Yes 600to800

    Ibresartan Avapro Yes 150to300

    Losartan Cozaar Yes 50to100

    Olmesartan Benicar No 20to40

    Telmisartan Micardis No 40to80

    Valsartan Diovan No 80to320

    *Thedoserangereferstothetreatmentofpatientswithhypertension.Dosesaslowasonehalforonequarterthelowerdoseshownmaybeusedinitiallyinhighriskpatientssuchasthosewithheartfailure,significantrenalinsufficiency,hyponatremia,intravascularvolumedepletion,orreceivingconcurrenttreatmentwithadiuretic.Thedrugmaybegivenindivideddosesatthehigherdoselevels.Adjustaccordingtobloodpressureresponseatpeakandtroughbloodlevels.

  • 14/7/2015 Reninangiotensinsysteminhibitioninthetreatmentofhypertension

    http://www.uptodate.com/contents/reninangiotensinsysteminhibitioninthetreatmentofhypertension?topicKey=NEPH%2F3815&elapsedTimeMs=4&sou 11/13

    NotavailableinUS.

    Datafrom:LexicompOnline.Copyright19782015Lexicomp,Inc.AllRightsReserved.

    Graphic64770Version8.0

  • 14/7/2015 Reninangiotensinsysteminhibitioninthetreatmentofhypertension

    http://www.uptodate.com/contents/reninangiotensinsysteminhibitioninthetreatmentofhypertension?topicKey=NEPH%2F3815&elapsedTimeMs=4&sou 12/13

    ComparisonoftheactionsofangiotensinconvertingenzymeinhibitorsandangiotensinIIreceptorblockers

    ACE:angiotensinconvertingenzymeACEI:angiotensinconvertingenzymeinhibitorARB:angiotensinIIreceptorblocker.

    Graphic55726Version3.0

  • 14/7/2015 Reninangiotensinsysteminhibitioninthetreatmentofhypertension

    http://www.uptodate.com/contents/reninangiotensinsysteminhibitioninthetreatmentofhypertension?topicKey=NEPH%2F3815&elapsedTimeMs=4&sou 13/13

    Disclosures:JohannesFEMann,MDGrant/Research/ClinicalTrialSupport:NovoNordisk[Diabetes(Liraglutide)]Vifor[Dialysis(Ironhydroxide)]Clegene[Dialysis(Sotatercept)].Speaker'sBureau:Amgen[Anemia(Darbepoetin)Roche[Anemia(Methoxypolyethyleneglycolepoetinbeta)Novartis[Hypertension(Valsartan)]Bruan[Dialysis(dialysisdevices)]Fresenius[Dialysis(dialysisdevices)].Consultant/AdvisoryBoards:NovoNordisk[Diabetes(Liraglutide)]Relypsa[Kbinder(Patiromer)]Abbvie[CKD(Paricalcitol)]Bayer[Hypertension(Diuretics)].KarlFHilgers,MDGrant/Research/ClinicalTrialSupport:AstellasNovartis[Kidneytransplantation(Tacrolimus,cyclosporine,everolimus)].GeorgeLBakris,MDGrant/Research/ClinicalTrialSupport:MedtronicRelypsa[Hypertension,hyperkalemia].Consultant/AdvisoryBoards:MedtronicRelypsaBayerNovartisDSIBoehringerIngelheimLexiconJanssenAstraZenecaKona[Diabetes,hyperkalemia,resistanthypertension(Canagliflozin,dapagliflozin,empagliflozin)].NormanMKaplan,MDNothingtodisclose.JohnPForman,MD,MScNothingtodisclose.Contributordisclosuresarereviewedforconflictsofinterestbytheeditorialgroup.Whenfound,theseareaddressedbyvettingthroughamultilevelreviewprocess,andthroughrequirementsforreferencestobeprovidedtosupportthecontent.AppropriatelyreferencedcontentisrequiredofallauthorsandmustconformtoUpToDatestandardsofevidence.Conflictofinterestpolicy

    Disclosures