Clinical Need & Technology (Insulin Delivery) · Clinical Need & Technology (Insulin Delivery)...
Transcript of Clinical Need & Technology (Insulin Delivery) · Clinical Need & Technology (Insulin Delivery)...
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Clinical Need & Technology (Insulin Delivery)
Donna Jornsay, CPNP, CDE, CDTCLong Island Jewish Medical Center, New Hyde Park, New York
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Insulinpens,insulinpumpsClinicalNeed
DonnaJornsay,MS,BSN,CPNP,CDE,CDTCCertifiedDiabetesTechnologyClinicianCourse
April30,2016
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InsulinPens
2
Pens,pensandmorepens
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AdvantagesofInsulinPens1. Moreaccuratedosing2. Greaterconvenience3. Smallerneedlelengths,4mm,insteadof6mm4. Makesitpossibleforvisuallyimpairedtoself
administerinsulinsafely5. HumaPen Luxura andEchoarere-useablepenswith
cartridgesandcapableofdelivering0.5unitsforkidsandinsulinsensitiveadults
MonthDay,Year 3Frid A,etal.(2010)Diabetes&Metabolism,36:S19-S29.
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EchoPen(notjustforkids…)Thispenhasamemory,evenwhenyourpatientdoesn’t.
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WorldwidePenUse:2009
DiabetesTechTherap 12(Suppl 1)S79-S85,2010
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InsulinConcentrations:units/mlU100:ApidraHumalogNovolog
Regular
Humalog 75/25Humalog 50/50Humulin/Novolin 70/30
NPH
LantusLevimirTreciba
U200:HumalogTreciba
U300:Toujeo
U500:Humulin Regular
6
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Allinsulinpensarenotcreatedequal
Waysinwhichpensdifferfromoneanother:• Type(s)ofinsulinavailable• Disposablevs.refillablecartridge• Unitincrementsdeliveredinsingledose(0.5,1,2or5units)
• Largestdoseavailable(30to300units)• Strength&dexterityneededtooperatepen• Thesize/colorofthenumbersonthedosingdial• Loudnessofdosingclicks
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StepsinInsulinPenTeaching
1. Newneedleeverytime2. 2unitprimedosewithallpens,everyinjection3. Holdtheneedleinplaceforacountof104. Removeneedleaftertheinjection
Penscanbeun-refrigeratedfor28daystypically;14daysformixedinsulin;42daysforLevimir
Eachu100insulinpenholds300units
8
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InsulinPumpsWe’vecomealongway,baby
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BrandsofInsulinPumps
MedtronicRevel/530GInsuletOmniPodAnimasPing/Vibe
RocheAccu-Chek SpiritCombo
Tandemt:slim,t:slimG4,t:flex Valeritas V-Go
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GlobalShareofInsulinPumpMarket
Source: D. Medical Industries LTD. - 2012 SEC Form 6-Khttp://www.sec.gov/Archives/edgar/data/1487525/000117891312003364/zk1212349.htm
58%
12%
11%
10%
6% 3%BasedonRevenue
MedtronicRocheAnimasInsuletDeltecOthers
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ClinicalIndicationsforPumpTherapy
• Hypoglycemia,mainreasonprescribed• Flexibility,mainreasonpatientsdesireapump• Dawnphenomenon• Pregnancy• Children,especiallyinfantsandtoddlers• Erraticlifestyle,especiallyshiftwork• Exercise,especiallyforeliteathletes• Abilitytogive“designerboluses”
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VariableBasalRates
4:00 16:00 20:00 24:00 4:00
Breakfast Lunch Dinner
8:0012:008:00
Time
BasalInfusion
Bolus Bolus Bolus
Plasmainsulin(mU/m
L)
25
50
75
CSII=continuoussubcutaneousinsulininfusion.
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PumpDisadvantages
• TakeslongertolearnthanMDI• Requiresmoreattentiontodetailandmorefrequentbloodglucosemonitoring
• CarbCountingvitaltosuccess• Moreexpensive,soinsuranceisaMUST• Sitescaneasilybecomeoverused• PotentialincreasedriskofDKA
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Whatmakesasuccessfulpumper?
• TakesresponsibilityforcommunicationwHCP• TestsBGfrequently(>6times/day)• Willingtolearnandpracticeselfmanagement• Hashealthinsurance• Capableofgoodproblemsolving• UnderstandstheriskofDKA• CarriesthebackupsuppliesneededtopreventDKAandtreathypoglycemia
Scheiner,G.(2012).Think likeapancreas.
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SuppliesTo CarryAtAllTimes
• Insulin• Waytoadministerinsulin(syringe/penneedles)
• Glucosemeter• Glucosetabs• MedicalAlert• Batteries• Waytocheckforketones (noteasy)
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PumpTraining&Initiation
• Whichpump,whichCGM,whichinsulin?• Initialdoses:weightbasedvs.%ofTDD• Salinetrialvs.Insulin@start?• CGMbeforevs.afterpumpinitiation?• Healthcareteamtrainingvs.pumpCo.CDE?–Whodoestheadjustments?Forhowlong?
• Singlebasalratevs.multiplerates?• Supportpersonstrained/schoolpersonnel
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IssuesinPumpInitiation:weightbasedvs.%ofTDD
• MostpatientsstartingpumpsdonothaveanoptimalA1c,sothereisinaccuracyinusingcurrentdoses
• Useonly40%basalforanyonewhoispregnantorwithahistoryofseverehypoglycemia
• Typically,startwithasinglebasalrate• UseCGMdata,ifavailabletodeterminetimesofbasalchanges
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IssuesinPumpInitiation:salinevs.nosalinestart
• Regionaldifferences• Advantagesofsalinestarts:givespts.anopportunityforpracticewith‘noharm’
• Disadvantageisthatpatientscannotseetheeffectsofpumpusewhilestillinjectinginsulin
• Prolongsthetrainingtime• Pumpcompaniesdiscouragesalinestarts
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OUTCOMES:SAPumpsvs.MDI
• 2012,Slover,etal• Comparison:sensor-augmentedpump(SAP)vs.
MDI• 82children+74teens• ↓inA1c,lowerAUCvaluesforhypoinSAPgroup• ↓hyperglycemicexcursionsinSAPgroup• ↓glycemicvariabilityinSAPgroup
Slover R,WelchJ,Creigo Aetal(2012).Pediatr Diabetes13:6-11.
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Outcomes:SAPumpsvs.MDI
• 2012,Bergenstal etal– 6mo.singlecrossovercon’t ofSTAR3– 420subjectswhocompleted1yr.RCT– 7.4%A1cinSAPgroupinitially– 8.0%A1cinMDIgroupinitially–↓to7.6%incrossovergroup–↓inA1csustainedinchildrenandadults
Bergenthal RMetal(2011).DiabetesCare 34:2403-2405.
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AHRQReviewInsulinPumps--CSIIvs.MDI
AnnInt Med157:336-347, 2012
Weight Gain. Weight gain was similar between the CSIIand MDI groups. However, the strength of evidence was low,with medium risk of bias in 4 studies and no good-qualitystudies (Appendix Tables 4 and 5) (38, 40, 44, 46).
QOL. Three studies showed improved diabetes mellitus–specific QOL favoring CSII (39, 43). However, thestrength of evidence was low, with high risk of bias and 1good-quality study (Appendix Tables 4 and 5) (44).
Adults With Type 2 Diabetes Mellitus
Four studies compared MDI with CSII in adults withtype 2 diabetes mellitus (47–50).
HbA1c Level. Our meta-analysis of 4 RCTs of at least18 weeks in duration showed no difference between CSIIand MDI in mean decrease of HbA1c levels (combinedmean between-group difference, �0.18% [CI, �0.43% to0.08%]; I2 � 0.0%; P � 0.84) (Figure 1). Strength ofevidence was moderate, with medium risk of bias and nogood-quality studies.
Severe Hypoglycemia. The incidence of severe hypogly-cemia did not differ much between CSII and MDI in ourmeta-analysis of 2 studies (48, 50), but the CI of the dif-ference was wide (Appendix Table 5). The strength ofevidence was low because of imprecision, medium risk ofbias and no good-quality studies.
Weight Gain. Weight gain did not differ betweenCSII and MDI, with low strength of evidence, high risk ofbias in 2 studies (48, 49), and no good-quality studies(Appendix Tables 4 and 5).
Evidence was insufficient to make conclusions about theeffects of CSII versus MDI on nocturnal hypoglycemia, hy-perglycemia, or QOL in adults with type 2 diabetes mellitus.
Comparative Effectiveness of rt-CGM Versus SMBGAll 10 trials addressing the comparative effectiveness of
rt-CGM versus SMBG were conducted in patients with type1 diabetes mellitus (51–60). None of the studies reported onmortality or any of the process measures. The insulin delivery
Figure 1. Mean between-group difference in the change from baseline HbA1c comparing CSII with MDI among children andadolescents with T1DM, adults with T1DM, and adults with T2DM.
Study, Year (Reference)
Children/adolescents with T1DM
Doyle et al, 2004 (32)
Schiaffini et al, 2007 (35)
Cohen et al, 2003 (31)
Nuboer et al, 2008 (33)
Opipari-Arrigan et al, 2007 (34)
Skogsberg et al, 2008 (36)
Weintrob et al, 2003 (37)
Subtotal (I2 = 0.0%; P = 0.561)
Adults with T1DM
DeVries et al, 2002 (40)
Thomas et al, 2007 (44)
Bolli et al, 2009 (39)
Tsui et al, 2001 (45)
Subtotal (I2 = 64.5%; P = 0.038)
Subtotal, excluding DeVries et al (I2 = 0.0%; P = 0.684)
Adults with T2DM
Derosa et al, 2009 (47)
Wainstein et al, 2005 (50)
Raskin et al, 2003 (49)
Herman et al, 2005 (48)
Subtotal (I2 = 0.0%; P = 0.840)
MDI, n
16
17
13
19
8
33
12
–
40
7
26
14
–
–
32
20
61
54
–
CSII, n
16
19
15
19
6
34
11
–
39
7
24
13
–
–
32
20
66
53
–
Mean Difference (95% CI)
–0.80 (–1.89 to 0.29)
–0.60 (–1.43 to 0.23)
–0.52 (–1.67 to 0.63)
–0.16 (–0.68 to 0.36)
–0.13 (–1.74 to 1.48)
0.00 (–1.25 to 1.25)
0.26 (–0.32 to 0.84)
–0.17 (–0.47 to 0.14)
–0.84 (–1.31 to –0.37)
–0.10 (–2.12 to 1.92)
–0.10 (–0.52 to 0.32)
0.25 (–0.42 to 0.92)
–0.30 (–0.58 to –0.02)
–0.01 (–0.35 to 0.34)
–0.50 (–1.57 to 0.57)
–0.50 (–1.57 to 0.57)
–0.16 (–0.51 to 0.19)
–0.10 (–0.52 to 0.32)
–0.18 (–0.43 to 0.08)
Favors CSII
Mean Between-Group Difference in HbA1c
Change From Baseline, %
Favors MDI–1 0 1
Error bars represent 95% CIs. Shaded boxes represent individual study point estimates. Box size corresponds to weight of study. CSII � continuoussubcutaneous insulin infusion; HbA1c � hemoglobin A1c; MDI � multiple daily injections; T1DM � type 1 diabetes mellitus; T2DM � type 2diabetes mellitus.
Review Methods of Insulin Delivery and Glucose Monitoring for Diabetes Mellitus
340 4 September 2012 Annals of Internal Medicine Volume 157 • Number 5 www.annals.org
Downloaded From: http://annals.org/ by a University of Southern California User on 03/22/2014
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AHRQReviewInsulinPumps:SAPvs.MDI+SMBG
vere hypoglycemia did not differ between rt-CGM andSMBG (pooled relative risk, 0.88 [CI, 0.53 to 1.46]) (Fig-ure 4, bottom). The risk difference between 2 groups favor-ing rt-CGM was 6 events per 1000 patients, with a CI
ranging from 31 fewer events to 19 more events per 1000patients. The strength of evidence was low, with mediumrisk of bias and 6 good-quality studies (52, 54, 55, 57, 58,60). Three trials reported data on severe hypoglycemia in a
Figure 4. Comparison of rt-CGM with SMBG and SAP use with MDI plus SMBG among patients with T1DM.
Study, Year (Reference)
rt-CGM vs. SMBG
Deiss et al, 2006 (58)
Tamborlane et al, 2008 (56)*
O‘Connell et al, 2009 (55)
Beck et al, 2009 (54)
Battelino et al, 2011 (59)
Raccah et al, 2009 (53)
Tamborlane et al, 2008 (56)†
Hirsch et al, 2008 (57)
Mauras et al, 2012 (60)
Tamborlane et al, 2008 (56)‡
Subtotal (I2 = 69.9%; P = 0.000)
SAP vs. MDI plus SMBG
Hermanides et al, 2011 (66)
Lee et al, 2007 (65)
Peyrot and Rubin, 2009 (64)
Bergenstal et al, 2010 (63)
Subtotal (I2 = 53.7%; P = 0.091)
SMBG, n
27
46
29
62
54
60
58
72
68
53
–
36
8
14
241
–
rt-CGM, n
27
52
26
67
62
55
56
66
69
57
–
41
8
14
244
–
Mean Difference (95% CI)
–0.60 (–1.01 to –0.19)
–0.53 (–0.71 to –0.35)
–0.43 (–0.71 to –0.15)
–0.34 (–0.48 to –0.20)
–0.27 (–0.47 to –0.07)
–0.24 (–0.61 to 0.13)
–0.13 (–0.37 to 0.11)
–0.11 (–0.36 to 0.13)
0.00 (–0.20 to 0.20)
0.08 (–0.17 to 0.33)
–0.26 (–0.33 to –0.19)
–1.10 (–1.46 to –0.74)
–0.97 (–2.54 to 0.60)
–0.70 (–1.32 to –0.08)
–0.60 (–0.75 to –0.45)
–0.68 (–0.81 to –0.54)
Favors rt-CGM
Mean Between-Group Difference in HbA1c
Change From Baseline, %
Favors SMBG–1 0 1
Favors rt-CGM
Pooled OR for Severe Hypoglycemia
Favors SMBG
0.01 0.10 0.50 2.00 10.001.00 100.00
Study, Year (Reference)
Kordonouri et al, 2010 (52)
Deiss et al, 2006 (58)
Tamborlane et al, 2008 (56)‡
Mauras et al, 2012 (60)
Tamborlane et al, 2008 (56)†
Beck et al, 2009 (54)
Tamborlane et al, 2008 (56)*
Hirsch et al, 2008 (57)
Raccah et al, 2009 (53)
O’Connell et al, 2009 (55)
Battelino et al, 2011 (59)
Overall
Events, n/Nrt-CGM
0/76
0/52
3/57
3/73
4/56
7/67
5/52
8/66
1/55
0/26
0/62
–
SMBG
4/78
1/48
5/53
5/71
6/58
7/62
4/46
2/72
0/60
0/29
0/58
–
OR (95% CI)
0.00 (0.00–2.0e plus 23.00)
0.00 (0.00–7.7e plus 23.00)
0.53 (0.12–2.35)
0.57 (0.13–2.46)
0.67 (0.18–2.50)
0.92 (0.30–2.78)
1.12 (0.28–4.44)
4.83 (0.99–23.63)
1112.22 (0.00–9.5e plus 29.00)
(Excluded)
(Excluded)
0.88 (0.53–1.46)
Mean between-group difference in the change from baseline HbA1c among patients with T1DM comparing rt-CGM with SMBG and SAP with MDIplus SMBG (top). Pooled OR of severe hypoglycemia comparing rt-CGM with SMBG among patients with T1DM (bottom). Error bars represent 95%CIs. Shaded boxes represent individual study point estimates. Box size corresponds to weight of study. HbA1c � hemoglobin A1c; MDI � multiple dailyinjections; OR � odds ratio; rt-CGM � real-time continuous glucose monitoring; SAP � sensor-augmented pump for insulin delivery; SMBG �self-monitoring of blood glucose; T1DM � type 1 diabetes mellitus.* Patients aged 15–24 y.† Patients aged 8–14 y.‡ Patients aged �25 y.
Review Methods of Insulin Delivery and Glucose Monitoring for Diabetes Mellitus
342 4 September 2012 Annals of Internal Medicine Volume 157 • Number 5 www.annals.org
Downloaded From: http://annals.org/ by a University of Southern California User on 03/22/2014
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Accu-Chek SpiritComboPump• Remotemeter(Accu-Chek
AvivaPlusmeter)– Canbolusfrommeteror
pump– Colorscreenmeter
• Basalincrementsof0.01u/hr&bolusincrementsof0.05u
• Intuitiveset-upwithintimesegments
• Optionsforpersonalizingpumpdosing
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AnimasVibe&PingPumps• VibeisdisplayfortheDexcomG4• Ping:B&Wremote(OneTouch
Ultra)– Canbolusdiscretely– Canboluswmeter&pump
• Basalincrementof0.025u&bolusincrementof0.05units
• Colorpumpscreen• IPX8:waterproof-12ftx24hours• IOBclearlyvisibleonPingwhen
glucoseistestedforabolus;onVibeCGMscreenandw/bolus
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Medtronic530GPump• TheThresholdSuspend
automaticallystopsinsulindeliverywhensensorglucosevaluesreachapresetlowthreshold.
• BayerContourNextmeterwithcolorscreensendsdatatopump
• CGMdatavisibleonpump• IntegratedCGMhasdifferent
glucosealertsbytimeofday• CareLink ®onlinedatareports• Basal incrementsof0.025u/hr;
Bolusincrementsof0.05u• Goodhistoryinpumpwithdata
averagedfor2to30days
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Insulet OmniPod Pump• Discreetpatchpumpwithstrong
adhesive• Automatedinsertionof6.5mm
angledTefloncatheter• Abletoaccessuniquesites
becausecannula insertedhands-free
• Glooko,Inc®onlinereports• Basalincrementsof0.001u/hr;
bolusincrementsof0.05u• Goodhistorywithdataaveraged
for1to90days• Nodisconnectforbathing,
swimming,etc.— noinsulininterruption
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Tandemt:slim,t:flex• t:slimG4displaysDexcomG4• T:flexholdsupto480units• Colortouch-screen• Basalincrementof0.001;
Bolusincrementsof0.01• Easytotrainanduse• IOBvisibleonhomescreen• Goodhistoryinpumpwith
dataaveragedover7,14,or30days
• Upto72hourdurationforatemporarybasal
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Valeritas V-Go• Coveredasapharmacybenefit• Disposable(changeevery24hrs)• Nobattery—mechanicalspring• Patchpump• ↓$pumpforT2DMpatients• Pre-setbasalrates:
V-Go20(0.83u/hbasal)+36u(2uincrementbolus)=56u
V-Go30(1.25u/hbasal)+36u(2uincrementbolus)=66u
V-Go40(1.67u/hbasal)+36u(2uincrementbolus)=76u
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EnhancedFeaturesoftheInsulinPumps
• Precisedosing-deliveryupto0.025units• Temporaryadjustmentsofbasalrates – forillness,
activity,etc.• InsulinBolus/CarbohydrateCalculations• DifferenttypesofBolusDelivery:
– Normal/Standard– Square/Extended– Dual/Combination– deliversanormalbolusfollowedbyanextendedbolus; good forpizza,Chinesefoods,highfatfoods
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Choosing the Right Type of Bolus• Normalorstandardbolus:Pumpdeliversinsulinallatonce;usedformostmeals.
ExtendedorSquarebolus:Pumpdeliversinsulinoveradesignatedtime;usedforextendedmealsandgastroparesis.CombinationorDualWavebolus:Pumpdeliversa
portionofthebolusasanormalbolus,followedfollowbytheremainderasanextendedbolus;usedforhighfatmeals.
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AlsoknownasNORMALbolus
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Insulindeliveredevenlyoveraspecifiedtime.Exampleofusage:Buffet
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Standardbolusplusextendedbolus.Exampleofusage:pizza,Chinesefoods,highfatfoods.
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SelfManagementBehaviors• CheckingBG>6timesdaily&loggingresults• Changinginfusionsetsevery2-3days• Countingcarbohydrates• Testingbasalratesbyskippingmeals• TestingICRsandISFstogetbestresults• Determiningthedurationofinsulinaction• Analyzingbloodglucosepatterns• Selfadjustingrates,andre-checking
WalshJ.&RobertsR.(2006).Pumping Insulin.Scheiner G.(2012).Thinklikeapancreas:practicalguidetomanaging diabeteswithinsulin.
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BasalInsulinRegulation
Test Last Meal / Bolus By
Check BG at May Eat / Bolus Again at
Overnight 6pm (skip night snack)
10pm, 1am, 4am, 7am 7am
Morning 3am (skip breakfast)
7am, 9am, 11am, 12noon
12 noon
Afternoon 8am (skip lunch)
12 noon, 2pm, 4pm, 5pm
5pm
Evening 1pm (have late dinner)
5pm, 7pm, 9pm, 10pm 10pm
Sample Basal Testing Schedule
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3-HourDuration
5-HourDuration
4-HourDuration
2:30pmto6:30pm12pmto5pmpm
BolusInsulinDuration:IOB
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InfusionSiteIssuesAnotherUnderstudiedFactor
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WhyIsItImportantToRotateInsulinInfusion/InjectionSites?
• Maintainhealthytissue• Decreasescarring• Improveinsulinabsorption• Minimizeerraticblood
glucosesduetoabsorptionrates
• Infusingintohypertrophiedtissuecandecreaseinsulinabsorptionby34%
Lipohypertrophyreferenceforlipo
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Diabetes Landmark Studies:• First glucose clamp study of Lipohypertrophy• Powered to detect ≥ 20% changes in PK/PD
[Insulin in LH]
[Insulin innormal tissue]
ü Insulinabsorptionisreducedby34%wheninjected intoLHT
Euglycemic ClampStudy
Lipohypertrophy(LH)leadstoblunted,morevariableinsulinabsorptionandactioninpatientswithType1diabetes
Figureabove:• Baseline-corrected meanseruminsulinconcentration profiles± SEM• Showsasignificant reduction intotal insulinexposure thereafter with34%lowerinsulin
concentration during thefirst4hours afterdosing(p=0.0021)
Famulla S,et.al.Lipohypertrophy LeadstoBlunted,MoreVariableInsulinAbsorptionandActioninPatientswithType1Diabetes.Diabetes.2015;64(suppl1).PosterpresentedatADAmeeting,Boston,MA.June2015.
Lipohypertrophy (LH)leadstodecreasedinsulinabsorption
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Diabetes Landmark Studies:• First glucose clamp study of Lipohypertrophy• Powered to detect ≥ 20% changes in PK/PD
ü Insulinabsorptionisreducedby34%wheninjectedintoLHT
ü PDeffectinthefirst4hrs is27%lowerwheninjecting insulinintoLHT
Euglycemic ClampStudy
Lipohypertrophy(LH)leadstodecreasedinsulinabsorption
[Glucose infusion rate (GIR) in normal tissue]
[(GIR) in LH]
Figureabove:• Meansmoothedglucoseinfusion rateprofileswith LOESSsmoothing(smoothing
parameter=0.3)• GIRprofiles showasignificantdifference inthePDeffectfrom4hours afterdosingwith
areduction inGIRof27%(p=0.0390)
Famulla S,et.al.Lipohypertrophy LeadstoBlunted,MoreVariableInsulinAbsorptionandActioninPatientswithType1Diabetes.Diabetes.2015;64(suppl1).PosterpresentedatADAmeeting,Boston,MA.June2015.
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BDFlowSmartTechnology
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PumpInfusionSites
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TheQuest
• Thequestfor“virginterritory”isfrequentlythegreatestchallengeinlong-terminsulinpumpuse.
• Varyingtheinfusionsetsbetween90degreesand45degreeobliqueinsertionsmayhelpplacecannulasinslightlydifferentareas.
• Developasystematicapproachtositerotation.• AsHCPs,weMUSTinspectinfusionsitesateveryvisit
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SafeHospitalUseofInsulinPumps• WrittenPolicyasGuide• Endocrineconsult• OrderSet:‘Pt.mayuseownpump’• Pt.attestationtoagreetoselfmanagement• Pt.bringsownpumpsupplies• RNdocumentsmealboluses,infusionsitechanges,andinspectionofsiteseveryshift
• HospitalInsulin• HospitalBGMeter
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WhentoD/CPump
• Criticallyill,septic,trauma• Alteredstateofconsciousness• Depressed/suicidal• Requiresinsulindrip• Pt.orcaregiverunwilling/unabletoperformselfmanagement
• Unwillingtosignattestation• Radiology,MRI,proceduresw/sedation
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