community acquired pneumonia - university of pittsburgh
TRANSCRIPT
CommunityAcquiredPneumonia
AnnaZemke,MD.PhD.February2017
CaptainoftheMenofDeath
Historical and Regulatory Perspectives on the Treatment Effect of Antibacterial Drugs for Community-Acquired Pneumonia M. Singer, S. Nambiar, T. Valappil, K. Higgins, and S. Gitterman
ObjecCves
ReviewofATS/IDSAguidelinesonCAP(2007)
Interimdevelopments:H1N1fluoutbreak
developmentofRVPswabsdiscoveryofhumanmetapneumoviruschangesinanCmicrobialsuscepCblityremovalofXigrisfromthemarket
AnnaZemkegotaniphone
Case1
65y/omanwithCOPDon3lpmhomeoxygen.Lastadmi[ed14monthsago.NorecentanCbioCcs.Notonhomesteroids.SCllsmoking.
Presentswithcough,increasedoxygenrequirementandleukocytosis(WBC18).
WherewouldyouadmitthispaCent?
RR28,nowon6lpmoxygen,mentalstatusnormal,BUN36,WBC18,Plts150,Temp38.5,normotensive.
ICUadmissiondecision
Majorcriteria:pressors,venClator(strongrec,levelIIevidence)
ORThreeminorcriteria:RR>30,P/FraCo<250,mulClobarinfiltrate,confusion,BUN>20,WBC<4K,Plt<100K,hypothermia,hypotensionrequiringaggressivefluidsresuscitaCon(ATSdefiniConof“SevereCAP”).
WhatdiagnosCctesCngisindicated?
Bloodculturesandsputumsamplesshouldbeobtained.ICUadmissionisanindicaConforLegionellaandPneumoccalUATPleuraleffusionisanindicaConforLegionellaandPneumococcalUATIfintubated,obtainanendotrachealaspirateThoracentesisifpleuraleffusion>5cm
Top5guessforeCology?rhinovirus(8.5%) S.pneumoniae(5%)influenzaAorB(6%) S.aureus(2%)metapneumovirus(4%) M.pneumoniae(2.5%)RSV(3%) L.pneumophila(2%)parainfluenza(3%) Enterobacteriaceae(2%)Coronavirus(2%)
CAPeCology
• EPICstudy(CDC).ChicagoandNashville2010-2012.
• EnrolledpaCentsadmi[edwithpneumonia.21%paCentsrequiredICUadmissionand2%died(olderpeople,peopleonventandwhodiedquicklywerelesslikelytobeenrolled).
ECology–part2
Studyintheelderly(>75y/o)from1996-1999admi[edtoICUinBuffaloNY.53%withpathogensdetected.DaviesAJRCCM2001.S.pneumo(19%)Legionella(9%)S.aureus(7%)H.influenza(7%)
TreatmentRecommendaCons
Empirictreatment:potentanCpneumonoccalb-lactamandmacrolide(coverS.pneumoniaeandLegionellasp.)Doesnotnecessarilyapplytopost-influenzapneumonia(increasedriskforS.aureus),peoplewithseverestructurallungdiseaseortheimmunosuppressed.
Wouldyoutreatwithsteroids?
Manysmall-mediumsizedstudies.Metanalysis(Siemieniuk,2015).--noeffectonall-causemortality,possiblemortalitybenefitinthosewithsevereCAP.--reducestheneedformechanicalvenClaCon(RR,0.45)--reducedriskofARDS(RR,0.24.ARR5%,NNT20)--Cmetoclinicalstability(1daysless).--4%ofsubjectswithhyperglycemiarequiringtreatment.
ObjecCve2
IDSA/ATSHAP/VAPGuidelines(2016)
0/44havestrongqualityevidence7/44havemoderatequalityevidence
keepsubtracCng….
Case2:
75y/ofemaleSNFresidentwithischemiccardiomyopathy,pacerplacement,DM,gout,cogniCveimpairment.Admi[edtohospitalarerafall,atrialfibrillaCon.Developsfever,coughandinfiltrateonday3.Getsworse.CondiConC.Intubated.Nowyours.
Bronchoscope?
ShouldpaCentswithsuspectedVAPbetreatedbasedonresultsofinvasivesamplingwithquanCtaCveculture
ORnoninvasivesamplingwithsemiquanCtaCveculture?
Recommendnoninvasivesamplingoverbronchoscopy.
Weakrec,lowqualevidence
Shouldprocalcitonin,CRPorCPISbeusedtodecidewhetherornottostartanCbioCcs?
No!OneofonlytwostrongrecommendaConswithmoderateevidenceintheenCreguideline.NoneofthesetestshaveadequatesensiCvityorspecificitytoimprovedecisionmakingregardingaddiConofanCbioCcs.
ECology?Onedaysurveyofhospitalsin2010:16%S.aureus13%P.aeruginosa12%Klebsiellasp.6.4%Strepsp.5.5%S.maltophilia3.6%A.baumanniiNEJM2014,Magilletal
ShouldyouuseyourlocalanCbiogram?
Really!!!Howcananyonesaynotothis?
AnCbioCcSelecConIYoustartpip-tazo.DoessheneedMRSAcoverageaswell?
1. PaCentwithriskfactorsforanCmicrobialresistance:--PriorIVanCbioCcsinthelast90days--sepCcshockonpresentaCon--ARDSonpresentaCon--5ormoredaysinpaCent--recentiniCaConofdialysis
OR
2.>10-20%isolatesonyourunitareMRSA
AnCbioCcSelecCon–Part2
Day2:HersputumhasheavyGNRs.She’sonlevophed.Nowwhat?
GuidelinesrecommenddoublecoverageforPseudomonasaeruginosaweakrecommendaCon,verylowqualityevidence.They’ve“limited”theatriskpopulaConto:--sputumwithheavyGNRs--bronchiectasis--sepCcshock--requiringmechanicalvenClaCon
AnCbioCcCoverageIII
SputumculturegrowsPseudomonasaeruginosasuscepCbleonlytocolisCmethate.
VAPduetoGNRsuscepCbleonlytoaminoglycosidesorpolymyxins,theysuggestaddinginhaledagentinaddiContosystemicdelivery.WeakrecommendaCon,verylowqualityevidence.TheyalsosuggestrouCnetesCngforpolymyxinsensiCvityinseungswithahighprevalenceofextensivelyresistantorganisms.
GuidelineRec’sforMDRbugsMRSA vancoorlinezolid(strongrec)
P.aeruginosa,Sonlytoaminoglycoside/polymyxin
IVandinhaleddrug
P.aeruginosa notaminoglycosidemonotherapy(poorlungpenetraCon,nostudiessupporCnguse)
ESBLGNRs getsuscepCbilitytesCng
Acinetobactersp. getsuscepCbilitytesCngcarbapenemoramp/sulbactampolymyxinsdonotaddCgayclineorrifampacinaddinhaledcolsiCmethate
Carbapenem-RGNRs IVandinhaledcolisCmethate
Howlongtotreat?Shehasbeentreatedfor6dayswithpip-tazoforapan-SP.aeruginosa.Afebrilearer2daysoftherapy,hemodynamicsimproved,nowextubated.
• Guidelinesrecommend7daysoftherapyforallorganisms,includingP.aeruginosa.
• Strongrec,verylowqualityevidence.• AdmitsconCnuedtherapyforslowrespondersisreasonable.
DuraConoftherapyGuidelinesarguethatthelongercoursesofabxforPsAtreatmentwastodecreaserecurrencerate.Nochangeinmortality,LOS,duraConofvenClaCon.Subsequentstudieshaven’tconfirmedthebenefit.AlsothedefiniConofrecurrencewasunclearandsubjectsmayhavebeencolonized.Theythenconductedtheirownmetaanalysiswithintheguidelinedocument.TheyDONOTrecommendlongertherapyfornon-fermenCngGNRs(mostlyP.aeruginosa).
VenClatorAssociatedEvents
CDCstatementreleasedJan17,2017VenClator-AssociatedEvent:areraperiodofstabilityyourPEEPorFiO2requirementincreases.
VAEsubtypes
InfecCon-RelatedVAC:worseningoxygenaCon+(feverorleukocytosis)+addiConofanCbioCc.PossibleVenClator-AssociatedPneumonia:VAC+posiCvecultureorlabcerCfiedpurulentsecreConNotethatradiographicfindingsarenotdiscussed.
VAPPrevenCon
Alotofheat,notmuchlight.
Adding“HOB30%”and“CHX”toalotofnotes…
VAPPathogenesisvsProposedPrevenCveStrategies
BacterialcolonizaConoftheoropharynxand/orstomachMicroaspiraConPneumonia
DecreaseMicroaspiraConReduceoralsecreCon
InhibiCngbacterialgrowthinthemouthorstomach
StudiedMethods:
acidifiedenteralfeeds,phytotherapy(ginger),selecCvedigesCvedecontaminaCon,earlyenteralfeeds,postpyloricenteralfeeds,decreasedgastriccontents,probioCcs,ulcerprophylaxis,aerosolizedanCbioCcs,closedsucConingsystems,earlytracheotomy,humdifiers,physiotherapy,PEEP,coatedendotrachealtubes,salinetrachealinstallaCon,selecCveoraldecontaminaCon,paCentposiConing,sinusiCsprophylaxsis,subgloCcaspiraCon,trachealcuffmonitoring.
HospitalMortalityRates
CID2015:60Roquillyetal
WhatisselecCvedigesCvedecontaminaCon?
SOD:selecCveoraldecontaminaConSDD:selecCvedigesCvedecontaminaConCombinaConofPOnonabsorbableanCbioCcsandashortcourseofIVanCbioCcs.Forexample:4daysofIVcefotaximewithoral/topicalapplicaConoftobramycin,colisCnandamphotericinB.
OngoingStudies
25,000subject,clusterrandomizedstudyinCanada,UK,NZ,AUSongoing(SuDDICU).9-naConEuropeanstudy,clusterrandomizaConwithcrossovercomparingSDD,SODandoralchlorhexidine(RGNOSIS).