cardiogenic shock: pharmacological and mechanical therapy · impress trial of impellacompared to...

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12/17/16 1 Cardiogenic Shock: Pharmacological and Mechanical Therapy Christopher Barnett MD, MPH Director, Medical Cardiovascular Intensive Care Unit Director, Pulmonary Hypertension Program Medstar Heart and Vascular Institute Medstar Washington Hospital Center Washington, DC Case A 55 year old with no known medical problems presents with an anterior STEMI 5 days after the start of symptoms. Despite prompt revascularization and vasopressor support hypotension persists and An IABP is inserted with temporary improvement in hemodynamics. An echocardiogram demonstrates a ventricular septal defect and he is taken urgently to the operating room for repair. Post operatively hemodynamics deteriorate and he is placed on ECMO. Seven days later he is weaned off ECMO and decanulated. He is subsequently discharged home from the hospital. Shock is Inadequate End Organ Perfusion Despite Adequate Fluid Resuscitation Criteria for the diagnosis of cardiogenic shock SBP <90 for >30 minutes or vasopressor needed to maintain SBP >90 Pulmonary congestion/elevated LV filling pressures Signs of impaired perfusion Mental status Cool extremities Oliguria Elevated lactate Differential Diagnosis of Cardiogenic Shock in Patients in the CVICU Complications of acute myocardial infarction Left ventricular dysfunction (80% of cardiogenic shock) VSD Ventricular wall rupture Acute valvular heart disease Decompensated chronic HFrEF HFpEF Viral cardiomyopathy Post cardiotomy Arrhythmia Valvular heart disease Right ventricular failure Post operative right ventricular failure Decompensated chronic pulmonary hypertension

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Page 1: Cardiogenic Shock: Pharmacological and Mechanical Therapy · IMPRESS trial of ImpellaCompared to IABP In Cardiogenic Shock: No Difference In Mortality Ouweneel. JACC. 2016. Meta Analysis

12/17/16

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CardiogenicShock:PharmacologicalandMechanicalTherapy

ChristopherBarnettMD,MPH

Director,MedicalCardiovascularIntensiveCareUnitDirector,PulmonaryHypertensionProgram

Medstar HeartandVascularInstituteMedstar WashingtonHospitalCenter

Washington,DC

Case

• A55yearoldwithnoknownmedicalproblemspresentswithananteriorSTEMI5daysafterthestartofsymptoms.• Despitepromptrevascularizationandvasopressorsupporthypotensionpersistsand• AnIABPisinsertedwithtemporaryimprovementinhemodynamics.• Anechocardiogramdemonstratesaventricularseptaldefectandheistakenurgentlytotheoperatingroomforrepair.• PostoperativelyhemodynamicsdeteriorateandheisplacedonECMO.• SevendayslaterheisweanedoffECMOanddecanulated.• Heissubsequentlydischargedhomefromthehospital.

ShockisInadequateEndOrganPerfusionDespiteAdequateFluidResuscitation

• Criteriaforthediagnosisofcardiogenicshock• SBP<90for>30minutesorvasopressorneededtomaintainSBP>90• Pulmonarycongestion/elevatedLVfillingpressures• Signsofimpairedperfusion

• Mentalstatus• Coolextremities• Oliguria• Elevatedlactate

DifferentialDiagnosisofCardiogenicShockinPatientsintheCVICU

• Complicationsofacutemyocardialinfarction• Leftventriculardysfunction(80%ofcardiogenicshock)• VSD• Ventricularwallrupture• Acutevalvular heartdisease

• DecompensatedchronicHFrEF• HFpEF• Viralcardiomyopathy• Postcardiotomy• Arrhythmia• Valvular heartdisease• Rightventricularfailure

• Postoperativerightventricularfailure• Decompensatedchronicpulmonaryhypertension

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Don’tForgetAboutNon-CardiogenicCausesofShock!• Distributive• Sepsis

• Obstructive• Pulmonaryembolism

• Neurogenic• Spinalchordinjury

• Hypovolemic• Acutebloodloss• Intravascularvolumedepletion

MortalityinCardiogenicShockIsHigh

• SecondarytoacuteMI22-88%• Ventricularseptalrupture87%

• RightventricularfailurefromPAH30-48%

FactorsassociatedwithincreasedmortalityafteracuteMI:• Advancedage• Shockonadmission• Clinicalendorganhypoperfusion• Anoxicbraininjury• DecreasingSBP• PriorCABG• Non-inferiorAMI• Creatinine>1.9

Machuca.Circulation,2015.Reyentovich.NatReviewsCardiology,2016.

InitialCardiacDysfunctionLeadsToACascadeofDownstreamAbnormalities

Reyentovich.NatCVReviews,2016.

ApproachtoPatientsWithSuspectedCardiogenicShock• Optimizevolumestatus• Usevasopressorstomaintainadequatebloodpressuretopreventendorganischemiaanddysfunction• UseInotropes(inodilators)tooptimizecardiacoutput• Continuallyreevaluateresponsetotherapy• Considersurgicalrepairofstructuralheartdiseaseearly• Considerimplementationofmechanicalsupportearly

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SurvivalIsImprovedWithEarlyRevascularizationinSHOCKFromACS

Hochman.JAMA,2006.Hochman.NEJM,1999.

ItIsUnknownIfCulpritPCIIsSuperiortoMultivessel PCIInShock

http://www.culprit-shock.eu/the-project/

ThePulmonaryArteryCatheterIsUsefulCarefullySelectedPatientsWithCardiogenicShock• Escapetrial• FoundnotdifferenceinoutcomesbetweentherapyguidedwithPACorwithout• ExcludedDobutamineordopamine>3mcg/kg/min,anymilrinone,Cr>3.5

Binanay.JAMA,2005.Chaterjee.Circulation,2009.

AlphaAgonists:MechanismofAction

Overgaard.Circulation,2008.

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MechanismofAction:BetaAgonists

Overgaard.Circulation,2008.

VascularsmoothmuscleCardiacmyocyte

MechanismofPDE- Inhibitor:Milrinone

Overgaard.Circulation,2008.

Catecholaminergic ReceptorActivityDrug α β1 β2 DDopamine +++(3+) ++++(4+) ++(2+) +++++(5+)

Dobutamine +(1+) +++++(5+) +++(3+) NA

Norepinepherine +++++(5+) +++(3+) ++(2+) NA

Epinepherine +++++(5+) ++++(4+) +++(3+) NA

Isoproterenol 0 +++++(5+) +++++(5+) NA

Phenylepherine +++++(5+) 0 0 NA

Overgaard.Circulation,2008.

VasopressorsInCardiogenicShock:WhatChoiceIsBest?• Shocktrial:Increaseddeathwithdopamineincardiogenicshock• Posthocsubsetanalysisof280patients• Pressorchoicerequirescarefulconsiderationofindividualpatienthemodynamicstochoosetheoptimalvasopressor

DeBacker.NEJM,2010..

Deathat28days

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MechanismsandHemodynamicEffectsofIABP• Increaseddiastolicbloodflowtotheproximalaorta• Reducedafterloadduetovacuumeffectofballoondeflation

• ↓SBP• ↑DBP• ↑MAP• ↓HR• ↓PCWP• ↑CO• ↑Coronaryperfusion

HemodynamicBenefitsFromIABPVariesByPopulationStudied

Prodzinsky.Shock,2012.

HemodynamicBenefitsFromIABPVariesByPopulationStudied

Stone.JACC,2003.

RoutineUseOfAnIABPAfterAMIDoesNotImproveOutcomes

• 598patientswithhypotensionpulmonaryedemaandimpairedendorganperfusion• Nodifferenceinmortality• TrendtowardsbenefitinyoungerpatientswithoutpriorMIandanteriorMI

Theile.NEJM,2012.

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O’Gara.JACC,2013.

CurrentPercutaneousMechanicalSupportOptions

Theile.Eur HeartJ,2015.

CharacteristicsofTemporaryMechanicalSupportDevices

Reyentovich.NatReviewsCardiology,2016.

PatientFactorsToBeConsideredInMechanicalSupport• Irreversibleneurologicaldamage• Intracranialbleedingorotherconditionthatprecludesanticoagulation• Inaccessiblevesselsforcannulation• Irreversiblecardiopulmonaryfailureinpatientswhoarenocandidatesfortransplantation• Multiorgan dysfunction• Malignantdiseasewith<5yearlifeexpectancy• Potentialforrehabilitationandqualityoflifeafterrecovery

Machuca.Circulation,2015.

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Impella Device

Impella Registry:EarlyImplantationofImpella MayImproveOutcomes

O’Neill.JInt Cardiology,2014.

Impella Registry:EarlyImplantationofImpella MayImproveOutcomes

O’Neill.JInt Cardiology,2014.

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IMPRESStrialofImpella ComparedtoIABPInCardiogenicShock:NoDifferenceInMortality

Ouweneel.JACC.2016.

MetaAnalysisDemonstratesBetterHemodynamics,IncreasedComplications,SimilarOutcomes

Cheng.Eur HeartJ,2009.

MetaAnalysisDemonstratesBetterHemodynamics,IncreasedComplications,SimilarOutcomes

Cheng.Eur HeartJ,2009.

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FewDataToEvaluateECMO

Machuca.Circulation,2015.

TheUseOfMCSDevicesHasIncreasedDramatically

Stretch.JACC,2014.

MortalityHasDecreasedForRecipientsofShortTermMechanicalSupport

Stretch.JACC,2014.

ShiftToEarlierUseofPercutaneousDevicesforMCS

Stretch.JACC,2014.

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ATeamApproachToEvaluationOfTheCandidatesForAdvancedMechanicalSupportIsRecommended• Heartfailure/hearttransplantspecialist• Intensivist• Cardiacsurgeon

PathwaytoDecisionforUseofMCS

Peura Circulation,2012.

ConsiderationsInChoosingMechanicalSupport

Thiele.Eur HeartJ.,2015.