Zinc and vitamin C supplementation in the treatment of ...€¦ · Background: pressure ulcers...
Transcript of Zinc and vitamin C supplementation in the treatment of ...€¦ · Background: pressure ulcers...
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ZincandvitaminCsupplementationinthetreatmentofpressureulcers
EVIDENCED-BASEDRESEARCHPRESENTATION
P R E S E N T E D B Y S A R I B O R N S T E I N
A U G U S T 2 0 1 5
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OverviewIS S UPP LEMENTAL Z I N C AND V I TAM IN C E S S ENT I A L TO
THE TREATMENT O F P RE S SURE U L CER S ?
• Preliminarycasestudy• BackgroundinformaIononPUs• Researchfromthreerecentstudies• Comparisonofresults• Currentguidelines• Discussion• Conclusion
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objectiveso ReviewtheroleofzincandvitaminCinwoundhealing
o Examinecurrentresearch(last5years)onsupplementalzincandascorbicacidandtheireffectsonwoundhealingIme
o IntegratecurrentresearchandguidelinestomakeappropriateintervenIonsforpopulaIonswithwoundsorpressureulcersatSSRRH
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IcebreakerCASESTUDY
71YOMthatpresentswithStageIIIPUPoapproximately40-50%last3daysNocurrentsupplementsareorderedWL3lbssinceadmission7daysagoCurrentBMI22.4kg/m2
² WhatareyourgeneralintervenIonsasadieIIan?
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Background:vitaminCo RDA:75-90mg/dayo UL:2,000mg/dayo Roleinwoundhealing
o Cofactorinthecross-linkage,synthesis,andstructuralstabilizaIono Lysineandproline
o Dietarysources:citrus,tomatoes,potatoes,bellpeppers,berries
o InU.S.deficiencyisrare
o Dietaryintake30-180mgà70-90%absorbedo Doses>1000mgà<50%absorbed
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Background:zinco RDA:8-11mg/dayo UL:40mg/dayo Roleinwoundhealing
o CofactorinsynthesisofDNA,RNA,proteino FormaIonofgranulatedandepithelialIssueo AnI-inflammatoryandanImicrobialeffects
o Dietarysources:redmeat,seafood,wholegrains,forIfiedcereals
o Deficiencyisrareo Plasmazincboundtoalbumino Assaysofzincunreliableinstateofsepsis,infecIon,trauma,stress
o Smallerdosesmorereadilyabsorbedo HighdosesupplementalzincàimmunesuppressionandreducedcopperabsorpIon
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Background:pressureulcers(PUs)
• Whenpressureonabonysiteobstructscapillarybloodflow,causingIssuenecrosis
• Keyriskfactors• PoornutriIonalstatus
• MalnutriIon:Presenceof2ofthe6characterisIcs• UWL:5%WLin1monthor10%WLin6months• Inadequatedietaryintake
• InfecIon,sepsis,trauma• IncreasesREE• Wounds/PUsputsgreaterdemandonbody
• LinkbetweennutriIonalstatusandtheincidence,progression,andhealingofPUs
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Background:pressureulcers(PUs)
• Incidencewithage• 27.2%ofpeopleoverage70• 33.8%ofpeopleoverage80
• Incidenceamongestablishments• 0.4to38%inhospitals• 2.2to24%inSNFs• 0to17%inhomehealthagencies
² TotalcosttotreatPUsintheU.S.=$11billionannually,$37,800onaveragetotreatONEPU
² PosesahighcostburdenforhospitalstotreatPUs
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InterventionsatSutter• OutdatedPracCce
• 500mgvitaminCBID• 220mgzincsulfate(50mgelementalzinc)• Proteinsupplement-EnsureComplete• Juven-HMBmetabolitewithglutamine andarginine
• CurrentPracCce
• MVIwithminerals• 100mgVitaminC• 25mgZinc
• BoostPlussupplement• 60mgVitaminC• 4.5mgZinc
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Let’sExaminetheResearch…
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SpeciSicnutritionalsupportacceleratespressureulcerhealingandreduceswoundcareintensityinnon-malnourishedpatientsvanAnholt,etal.
• BACKGROUND:• PUsposeahighcostburdenonhealthcaresystemsworldwide• PaIents’riskofdevelopingPUsis2-to3-foldhigherwhenmalnourishedorunderweight
• Previousresearchhasshownprovidinganoralnutri-onalsupplement(ONS)improvesnutriIonalstatusandlowersincidenceofPUdevelopmentinthosemalnourished• Whataboutthosenon-malnourished?
RESEARCHSTUDY1
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RESEARCHSTUDY1PURPOSE:ToinvesCgatethepotenCalofanarginine-andmicronutrient-enrichedONStoimprovehealingofPUsinnon-malnourishedpaCentswhowouldusuallynotbeconsideredforextranutriConalsupport.HYPOTHESIS:Thesupplementrichinprotein,arginineandmicronutrientswillpromoteneoangiogenesis,sCmulatecollagensynthesis,andhaveaposiCveeffectonwoundhealing.
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Participants• 47paIentsrecruitedfrom8healthcarecentersin4countries(CzechRepublic,Belgium,TheNetherlands,Curacao)
• Inclusioncriteria:• 18to90yearsold• AtleastoneStageIIIorIVpressureulcer(EPUAPclassificaIonsystem)• ReceivingstandardcareandstandarddietwithoutnutriIonalsupplementsatleast2weeksbeforethestudy
• Exclusioncriteria:• Malnourished
• Age18-70YO:BMI<18.5• Ageabove70YO:BMI<21
• SeveremedicalcondiIons,non-pressure-relatedulcers,dietrestricIons,lifeexpectancy<6mo,useofcorIcosteroids
• 4subjectsdroppedout
RESEARCHSTUDY1
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Methods• 22subjectsrandomlyallocatedtoreceiveaspecificONS• 1serving(200mL):250kcal,20gprotein,250mgvitaminC,9mgzinc(othermicronutrients)
• 21subjectsrandomlyallocatedtoreceiveanon-caloric,flavoredplacebo
• Allsubjectsreceived200mLservingsTIDbetweenmeals• productcompliancewasrecorded
• Allreceivedthesame,standardinsItuIonaldiet• Volumeconsumedwasrecorded
• Lengthofstudy,8weeks
RESEARCHSTUDY1
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Methodscontinued
• Assessedweeklyover8weeks• PUSA:measuredlength+widthusingaruler• PUSHscore:0(completelyhealed)to17(greatestseverity)
• SA,exudate,typeofwoundIssue• TotalnumberofdressingsappliedintheweekandImeforapplicaIon
• Assessedatbaselineandweek8• Weight,BMI,MalnutriIonUniversalScreeningTool(MUST)score,bloodparameters(vitaminC,zinc)
RESEARCHSTUDY1
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*NostaIsIcaldifferencesbetweenthegroupsatbaseline*NostaIsIcaldifferencesbetweenPUcharacterisIcsbetweengroupsatbaseline
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ResultsRESEARCHSTUDY1
Fig1.PUSizeONSgrouphealedsignificantlyfasterthanthecontrolgroup(P=0.016)
Fig2.PUSHscorePUSHscoresimprovedsignificantlyintheONSgroupcomparedtothecontrolgroup(P=0.033)
ONSgroup(closedsymbol) Controlgroup(opensymbol)
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ResultsRESEARCHSTUDY1
Fig3.NumberofDressingsSignificantlyfewerdressingswererequiredintheONSgroupthaninthecontrolgroup(P=0.045)
Fig4.TimespentofchangingdressingsSignificantlylessImewasrequiredtochangethedressingsintheONSgroupversusthecontrolgroup(P=0.022)
ONSgroup(closedsymbol) Controlgroup(opensymbol)
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ResultsRESEARCHSTUDY1
Table3.NutriConalbloodparametersNostaIsIcallysignificantdifferencesbetweenbloodparametersintheONSandcontrolgroupswiththeexcepIonofvitaminCincreasinglysignificantlyintheONSgroupbetweenbaselineandtheendofthestudy(P=0.015)
Table4.AmountconsumedoftheONSandcontrolproductSignificantlymoreproductwasconsumedbythecontrolgroupthantheONSgroup(P=0.042)
ONSGroup ControlGroup
75.8±3.7% 86.5±2.3%
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Conclusion• Thehigh-protein,arginine-andmicronutrient-enrichedONSacceleratedthehealingofPUs,asindicatedby:• SignificantreducIoninPUsize• SignificantdecreaseinPUSHtoolscores• Significantlyfewerdressingsrequired• LessImerequiredtochangethedressings
• SynergisIceffectbetweenarginine,vitaminC,zinctoimprovewoundhealing
• SupplementaIonwillimprovequalityoflifeofnon-malnourishedpaIentsandsavecostsbydecreasingwoundcare
RESEARCHSTUDY1
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Timetowoundclosureintraumapatientswithdisordersinwoundhealingisshortenedbysupplementscontainingantioxidantmicronutrientsandglutamine:APRCTBlass,etal.
• BACKGROUND:• Ascorbicacidandzincarearributedanimportantroleinwoundhealing
• ClinicaldataoncasualrelaIonshipwaslackingbetweenmicronutrientsupplementaIonandwoundhealing
RESEARCHSTUDY2
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RESEARCHSTUDY2PURPOSE:ToinvesCgatehowdietarymeasuresincludingmicronutrientsupplementaCon(includingascorbicacidandzinc)improvesthewoundhealingprocess.HYPOTHESIS:ThewoundclosureintraumapaCentswithdisordersinwoundhealing(DWH)isacceleratedbysupplementaConofanCoxidantmicronutrientsandglutamine.
• DWH:failuretoclosewithconInuedexcreIon10daysasertrauma)
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Participants• 20CaucasiantraumapaIentswithDWHwererecruitedfromUniversityHospitalofBonn,Germany
• Exclusioncriteria:• ENorTPN• CurrentsupplementaIonwithvitaminsandtraceminerals• ConsumpIonofforIfiedjuices• ExtremecomorbidiIes• PUsasprimarydiagnosis• ICUstayorsepsis
• All20subjectscompletedthestudy
RESEARCHSTUDY2
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Methods
• 10subjectsrandomlyallocatedtotheverumgroup• ReceivedtwosachetsperdayofGlutaminePlus®granulate• 500mgAA,6.6mgzinc,20gglutamate
• 10subjectsrandomlyallocatedtotheplacebogroup• Receivedtwosachetsperdayoftasteless,isoenergeIcmaltodextrine
• BothgroupsinstrucIons:• MixtheenIresachetwithyogurt,dessertorbeverageandconsumeimmediately• Documentintakeinadiary
• Allreceivedaprotein-richdietprovidedbyahospitalcaterer• ForIfiedjuiceswereexcluded• Subjectsrecordeddailyintakes
• Lengthofstudy,14days
RESEARCHSTUDY2
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Methodscontinued• Measuredond0andd14
• Anthropometricdata• NutriIonalstatus• DeterminedbyaSubjecIveGlobalAssessment(SGA)
• Well-nourished:SGAA• Moderatelymalnourishedorsuspectedtobemalnourished:SGAB• Severelymalnourished:SGAC
• DeterminedriskformalnutriIon• NutriIonalRiskScreening-2002
• BloodSamples• Ascorbicacidandzinc
• Measuredond0,d7,andd14• ParametersofmicrocirculaIon:oxygensaturaIon,bloodflow,bloodvelocity• Non-invasivewhitelightspectrometer
• Woundtemperature• Timetowoundclosure(studyentrytonosecreIon,inflammaIonorinfecIon)
RESEARCHSTUDY2
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ResultsRESEARCHSTUDY2
Table3.Nutrientstatus(plasmaconcentraCons)atd0andd14Median[quarIles].Nutrientstatusiscomparableinbothgroupsatbaseline.d0:baseline;d14:aser14-daysupplementaIon;n.s.:notsignificant
² NostaIsIcaldifferenceofzincorascorbicacidplasmaconcentraIonsbetweend0andd14inboththeplaceboandverumgroups
² NostaIsIcalevaluaIonofzincwasperformed“duetolownumberofpaIentsconcerned”
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ResultsRESEARCHSTUDY2
Figure1.Timetowoundclosure[days]SignificantdifferenceinImetowoundclosurebetweengroups
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ConclusionRESEARCHSTUDY2
• SupplementaIonofanIoxidantmicronutrientsandglutamineisassociatedwithanacceleratedwoundclosureinpaIentswithDWH• SpeculatedglutaminesupplementaIonintheverumgroupmaintainedplasmaglutaminelevels;increasedintracellularglutamineavailability;thussupporIngthehealingprocess• Glutamine:majornitrogensourceforrapidlyproliferaIngfibroblastsandepithelialcells.
• SpeculatedvitaminCsupplementaIoncausedreducIonininflammaIoninverumgroup
• “Theunderlyingmechanism(s)remainsdebatable”
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Anutritionalformulaenrichedwitharginine,zincandantioxidantsforthehealingofpressureulcers:arandomizedtrialCereda,etal.
• BACKGROUND:• PrevioustrialsonspecificnutriIonalsupplementsforthetreatmentofPUshavebeensmall,inconsistentintheirformulaIons,ordidnotstandardizefortheproteinandcaloriecontentofthesupplements.
• Nootherstudiesevaluatedtheindependentroleofarginine,zincandvitaminCwhenincludedinareadilyavailablecommercialformuladesignedtoimprovewoundhealing
RESEARCHSTUDY3
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RESEARCHSTUDY3PURPOSE:Toperformalarge,randomizedtrialinmalnourishedpaCentstoevaluatewhethersupplementaConwitharginine,zincandanCoxidantswithinahigh-calorie,high-proteinformulaimprovesPUhealing.HYPOTHESIS:Theoralformulaenrichedwitharginine,zincandanCoxidantsisbeneficialtothehealingofPUs.
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Participants• 200malnourishedadultswithPUsStageII-IVrecruitedfrom7sites,Italy
• Long-termcareorhomecareservices• Inclusioncriteria:• Malnourished(oneofthefollowing)
• LowBMI• Forage<65:BMI<20kg/m2
• Forage≥65:BMI<21kg/m2
• RecentunintenIonalWL• ≥10%in3months• ≥5%in1month
• Lowserumalbumin• Reducedoralintake
• <60%ofesImateddailyenergyrequirementstheweekprior
• AbletodrinkONSs• Providewrirenconsent
• Exclusioncriteria:• ArIficialnutriIon,uncontrolledDM,renalorhepaIcinsufficiency,HF,PVD,COPD,
neoplasIcdisease,obesity,infectedwound,orsepsis• 138subjectscompletedthetrial• 200includedinanalysisusinglinearregressionmodels
RESEARCHSTUDY3
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Methods• 101subjectsrandomlyallocatedtotheexperimentalformula
• 1serving(100mL):125.8kcal,10gprotein,1.5gArginine*,125mgvitaminC*,4.5mgzinc*(othermicronutrients)
• 99subjectsrandomlyallocatedtothehomemade,controlformula• 1serving(100mL):127.2kcal,10gprotein,19mgvitaminC,2.3mgzinc(othermicronutrients)
• Caloriesandgramsofproteinequivalentinbothforumlas• Bothgroupsreceivedtwoborles(400mL)perdayoftheirrespecIveformulas• Adherencewasmonitoredthroughoutthestudy
• Dietaryintakesnotstandardized• Lengthofstudy,8weeks
RESEARCHSTUDY3
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Methodscontinued• Measuredatbaselineandweek8:• Bodyweight• Bradenscale:measuresriskofPU
• Score≤18predicIveforPUdevelopment
• Measuredatbaseline,week4,andweek8:• PUarea(unstatedhow)
• Measuredatbaselineandevery2weeks:• Totaldailyenergyandproteinintakes(includingONSs)
• 3-dayquanItaIvefooddiary,assessedbyRD• Measuredonadailybasis:• Amountofformulaconsumed
• Typeofdressingandfrequencyofitschangewasindividualized
o AllmethodswerestandardizedbetweenfaciliIeso Thesamepersonassessedallsubjectsateachfacility
RESEARCHSTUDY3
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² Experimentalandcontrolformulascontainedsameamountofproteinandcalories
² StaIsIcallydifferentintheamountofzinc,vitaminC,arginine*
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ResultsPrimaryendpoints• ReducIoninPUareaatweek8,% XX
Secondaryendpoints• ≥40%reducIoninPUareaatweek8,% XX• Completehealing,% X• ReducIoninPUareaatweek4,% X• WoundinfecIons,%• Meandressings,n
RESEARCHSTUDY3
X:experimentalgroupwithsignificantlymore%personsatweek4X:experimentalgroupwithsignificantlymore%personsatweek8
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ResultsRESEARCHSTUDY3
• Adherencetotreatment:• 84.8%±15.2%inexperimentalgroup• 83.7%±16.3%incontrolgroup
• TreatmentresultedinincreaseBWat8weeksinbothgroups
Showssignificance
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ConclusionRESEARCHSTUDY3
• “OveralltreatmentwaseffecIveinimprovingPUhealinginboththeexperimentalandcontrolgroups”
OverallConclusion:AddiIonalprovisionofarginine,zincandanIoxidantsinthenutriIonalsupportofpaIentswithPUswaseffecIveinimprovingPUhealing• MeanreducIoninPUareaatweek8• ≥40%reducIoninPUareaatweek8
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Comparisonofstudies
Study1 Study2 Study3
Numberofsubjects 43 20 200
TestedmalnourishedpopulaIon ✔ ✔
Testednon-malnourishedpopulaIon ✔ ✔
IsolatedzincandvitaminC
Supplementcontainedglutamine ✔
Supplementcontainedarginine ✔ ✔
ONSgrouphadacceleratedwoundhealing ✔ ✔ ✔
AcceleratedwoundhealingexclusivelycausedbysupplementalvitaminC&zinc
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WhatdoesthePressureUlcerPreventionandTreatment:Clinical
PracticeGuidelinessayaboutcurrentresearch….?
-NPUAP,EPUAP,PPPIA
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• “methodologicalflawsandstudysizehaveprecludedconfirmaIonofclinicallysignificantresults…becausepreviousstudiesoftheindividualnutrientsfailedtoshowbenefit,theauthorshavepostulatedasynergisIceffectamongthenutrients.”–2014CochraneDatabaseSystemReview
• “The2014CochraneReview…invesIgatedtheeffectofnutriIonalsupplementaIononthehealingofPUs[in]14studies….TheauthorsconcludedthereisgenerallynoclearevidenceofimprovedPUhealingwithnutriIonalsupplements….Mostofthetreatmentstudieswereunclearandhadahighriskofbias.”–NPUAP,EPUAP,2015
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Zinc:• “High-dosezincsupplementaIon(>40mg/d)isnotrecommendedbecauseitcanadverselyaffectcopperstatus…inhibithealing…induceacopperdeficiency[which]maybeharmfulascopperisessenIalforcollagencross-linking.”
• “Noevidence-basedresearchexiststoproveit’sbeneficialtogivemegadosesofzincovertheuppertolerablelimitof40mg/dtopromotewoundhealingunlessclinicalsignsofzincdeficiencyarepresent,andsupplementaIonshouldbestoppedoncedeficiencyiscorrected.”
-NPUAP,EPUAP2015• “InthepresenceofaconfirmedorexpectedzincdeficiencygeneralpracIceistogiveZnSO4220mg(50mgelementalZn)bidfornolongerthantwoorthreeweeks.”
-A.N.D.Nutri-onCareManual
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VitaminC:• “Researchdoesn’tsupportgiving[rouIne]megadosesofvitaminCtoacceleratewoundhealing…physiologicaldosesshouldbeconsidered[only]whendietarydeficiencyisdiagnosed.”
• “Theinclusionoffruitsandvegetablesinthedietcanachievethedailyrecommendedintake”
-NPUAP,EPUAP2015• “MembersofthegeneralpopulaIonshouldnotrouInelyexceedtheUL,which…appliestointakefrombothfoodandsupplements….DosesgreaterthantheULmaycausenausea,diarrheaorabdominalcramps.”
-IOM’sDietaryReferenceIntakes
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NocurrentresearchhasdirectlyandappropriatelydeterminedthatsupplementalzincandvitaminCacceleratewoundhealing.
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Adietitian’sMNTgoalforPUs:
• MaintainadequatenutriIonstatusbyprovidingopImumdietaryandfluidintake
• IdenIfyandtreatcausesofpoornutriIonalintake• MonitorweightstatusrouInelytodetectunexpectedorunintenIonalweightloss
• SelectnutriIonintervenIonstoimproveormaintainnutriIonalstatus,includingtheuseoforalsupplementsornutriIonsupport,ifwarranted
“InadequatedietaryintakemayrequireamulIvitamin/mineralsupplement;however,theuseofspecificsupplements(i.e.vitaminCandzinc)isonlyrecommendedwhenatruedeficiencyoccurs.”
-A.N.D.Nutri-onCareManual
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DetectingDeSiciencies:• PlasmazinclevelsnaturallydecreasewithinflammaIon,andlabtesIngmaynotrepresenttotalbodystores• Assayisrarelydone
• Physicalassessmentcanhelpdeterminedeficiencies• Tongue,skin,nails,hair,lips
• Ifpre-exisIngmalnutriIonisevident,correctdeficienciestoimprovenutriIonalstatus
• Liberalizedietandencouragepointake• ONS-Boost• SuggestnutriIonsupport,ifappropriate
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Assessment&Discussion:
WhatisonepieceofinformaIonyouwilltakeawayfromtodayspresentaIononPUs?
vvv
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Empoweryourselfto…
• UsewhatwehavelearnedtodayfromthispointforwardtoappropriatelyassessandmakenutriIonalrecommendaIonsforpaIentswithPUs• A.N.D.NutriIonCareManual• 2014PressureUlcerPreven-onandTreatment:ClinicalPrac-ceGuideline,fromNPUAP,EPUAP,PPPIA
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SummaryI S S U PP LEMENTAL Z I N C AND V I TAM IN C E S S ENT I A L
TO THE TREATMENT O F P RE S SURE U L CER S ?
• Preliminarycasestudy• BackgroundinformaIononPUs• Researchfromthreerecentstudies• Comparisonofresults• Currentguidelines• Discussion
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THANK YOU
QUESTIONS?