Clinical Use of Blood The AIM II Trial
Sue CottonBlood Stocks Management Scheme
27/01/12
Dynamic Blood, East Midlands RTC Conference.
Presentation
Setting the SceneInventory ManagementAIM II what is it?Trial of AIM IIBenefits of AIM IISummary
Setting the Scene
Blood transfusion is an essential part of modern health care.Goodwill of voluntary donorsSupply must meet demandDemand is difficult to predictIt would be great to have detailed intelligence on where blood goes
How can we find out how blood is being used at the moment?
Only by time consuming retrospective studies or prospective auditOr by asking transfusion teams for information
Blood Stocks Management Scheme
Intelligence on blood inventory management gathered from across the blood supply chain.Stock and wastage levels of red cells Wastage levels of plateletsBenchmarkingTransparency of data Significant improvements in inventory management
Appropriate Inventory Management(AIM) Overview
Phase I (Module1)BSMS source code provided by NHSBTCollaboration between NHSBT/ America s Blood Centers (ABC)American name: AIM I (Appropriate Inventory Management Module I)
Phase II (Module 2)Allows for vein to vein monitoring of blood components from donation to the patient at the hospitalBlood utilisation management requires patient level transfusion data in order to determine meaningful and appropriate use
Goals for AIM
Create an inclusive approach to blood management by aligning supply with demand to ensure patient transfusion needs are metAssist hospitals in complying with metric driven standardsAIM is used to reduce the overall cost of blood by tracking Key Performance Indicators (KPIs):
Reduce unnecessary transfusion by providing reports with national (and international) benchmarking to reveal evidence based best practice
Red Cell Demand in England & N Wales
2.22 1.93
-4.36%
2.02
-5.88%
2.14
-1.40%
2.17
-0.90%
2.19
-1.21%
1.87
-2.88%
1.60
1.70
1.80
1.90
2.00
2.10
2.20
2.30
2000\01 2001\02 2002\03 2003\04 2004\05 2005\06 2006/07
Mill
ion
red
cel
l un
its
1.83
-2.4%
2007/08 2008/09
1.02%
1.86 1.87
0.3%
2009/10
-1.4%
2010/11
1.84
0.0%
2.4% -0.6% 0.8% -1.4% 0.5%
212
216
220
224
228
232
2001
/02
2002
/03
2003
/04
2004
/05
2005
/06
2006
/07
2007
/08
Issu
es 0
00
236
244
2008
/09
3.7%
2009
/10
4.0%
Platelet Demand in England & N. Wales
2010
/11
240
3.7%
AIM: Distr ibution of Transfused Patients by Age Group, Gender
Global Red Cell Utilization Rates: 2008-09
Source: D Devine et al.: International Forum/Inventory Management, Vox Sanguinis 2009
Analysis and reports
PAS coded data related to transfusion episode (ICD 10
diagnosis code, OPCS4 procedure code)
Data mining software extracts relevant data (no patient identifiable features)
Datawarehouse hosted by ABC (in trial)
PAS data related to length of stay, consultant,
specialty
LIMS data related to transfusion episode
Hospitals extract data around the transfusion episode from hospital databases and send to a data warehouse. Data can be used to generate reports for both blood providers and blood users.
AIM II The need for data
Dictionary of data elementsrequired provided to hospital.
Transfusion yes or no?Patient ID (encrypted)
Date of admission and dischargeYear of birth
GenderHealthcare Resource Group (HRG)
Date and time of transfusionTransfused component
Pre transfusion lab test resultDonation number and product code
Expiry date
Mortality FlagOrdering physician
Directorate
Trial of AIM II in England
Evaluate the AIM II system functionality, assessing the feasibility of using system to collect information on blood usageTrial in collaboration with 4 hospitalsPresent overview of system to hospital teams to enable them to understand the resources and IT capability required.Work with hospitals to establish data extraction routines Hospitals send data to data warehouseBenchmarking reports provided to hospitals
AIM II -Benchmarking
Benchmarking based upon clinical categories the user chooses
Randomized clinical tr ial designed to test the hypothesis that higher blood transfusion threshold improves functional recovery and reduces morbidity and mortality.
Outcome of this tr ial targets a more conservative 8.0g/dL transfusion tr igger .
Functional Outcomes in Cardiovascular Patients Undergoing Surgical Hip Fracture Repair (FOCUS) Tr ial
Comparison of use of red cells in primary hip replacement
0
10
20
30
40
50
60
Hospital 1 Hospital 2 Hospital 3 Hospital 4
Per
cen
tag
e o
f p
atie
nts
tra
nsf
use
d
This hospital has:a pre op anaemia
management pathwayuses IV tranexamic
acid to cover surgery has a strict post op
transfusion trigger
Figure 1. Observed Variation in Hospital-Specific Transfusion Rates for Primary Isolated CABG Surgery With Cardiopulmonary Bypass During 2008 (N = 798 Sites)
Bennett-Guerrero, E. et al. JAMA 2010;304:1568-1575
Blood and blood component use in coronary artery bypass surgery
0
10
20
30
40
50
60
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80
90
100
Hospital 1 Hospital 2 Hospital 3 Hospital 4
Per
cen
tag
e tr
ansf
use
d
pat
ien
ts Red cells
FFP
platelets
This hospital has: Pre op anaemia management
pathwayUses IV tranexamic acidUses TEG to guide coagulopathy
treatmentHas strict post operative
transfusion trigger
Controversies in RBC Transfusion in the Critically Ill, Paul C. Hebert, et al April, 2007 (Abstract)
Transfusion Requirements in Cr itically Ill (TRICC)
Outcome:in the absence of bleeding, this group
recommended 7.0g/dL as the hemoglobin trigger for best patient outcome.
Red cell transfusion on ICU
0%
10%
20%
30%
40%
50%
60%
70%
80%
90%
100%
Hospital 1 Hospital 2 Hospital 3 Hospital 4
Per
cen
tag
e tr
ansf
use
d
Hb>10
Hb 9-10
Hb 8-9
Hb 7-8
Hb < 7
This hospital has a strict transfusion trigger of Hb < 7g/dl
Which patients are receiving platelets in my hospital? (By HRG chapter)
0
10
20
30
40
50
60
Nervo
us System
Eyes a
nd Perio
rbita
Mouth H
ead Neck a
nd Ears
Respira
tory
System
Cardia
c Surg
ery a
nd Prim
ary C
ardiac C
...
Digestive S
ystem
Hepato
biliary
and Pancre
atic S
ystem
Musculoskeletal S
ystem
Skin, Bre
ast and B
urns
Endocrine a
nd Metabolic
System
Urinary
Tract
and Male
Reproductiv
e S...
Female Repro
ductive S
yste
m and Assis
t..
Obstetrics
Diseases of C
hildhood
and N
eonates
Vascular
System
Radiolo
gy and N
uclear Medicine
Haem
atology, C
hemoth
erap
y, Rad
iothe...
Undefined G
roups
Multiple
Traum
a, Emerg
ency Medicine a
..
Immunology, In
fectious D
iseases a
nd ot...
Critical C
are and H
igh Cost D
rugs
Per
cen
tag
e tr
ansf
use
d
Platelet use in haematology patients: stable patients with myelodysplasia
0%
10%
20%
30%
40%
50%
60%
70%
80%
90%
100%
Hospital 1 Hospital 2 Hospital 3 Hospital 4
Per
cen
tag
e p
atie
nts
tr
ansf
use
d
Plts >20
Plts 10-20
Plts <10
This hospital has a strict transfusion trigger of < 10 x 109/l for plateletsIt is possible to drill down to identify the cases where transfusion occurred with a platelet count above this
Examples of Future analysis
Percentage of transfusion of non-apheresis platelets to children under 16 yearsPercentage of children born after 1996 given standard FFPPost cardiac surgery outcome related to age of bloodUse of FFP to reverse warfarinTotal number of units (and donor exposures) transfused to individual patientsComparison of use for the same procedure by consultant
Future developments:Recording the clinical reason for blood use
The tool would become much more powerful if there could be a field in LIMS with a coded reason for clinical useThe code would come from a standardised menu and would be selected by the person requesting the transfusion (ideally by electronic order comms)Currently there is an assumption that the HRG is the reason for transfusion this is less accurate for medical reasons for transfusion
Potential Benefits of AIM IIBetter understanding of where and why blood and blood components are being used.
Hospitals and physicians will have benchmarking data to support appropriate use initiatives.
Hospitals wanting to utilise benchmarking have been hindered by limited data or lack of comparative data.At individual hospital level will be able to establish baseline performance and how it compares to regional / national / international peersStarting point for interhospital collaborations to identify best practice that could be implemented in other hospitals.
Potential Benefits of AIM II
NHSBT will benefit as knowledge of clinical use will inform strategic planning
Ensure sufficiency of supplyMaintain appropriate inventory levels to ensure supply meets demandInformation to evaluate safety decisionsSupport emergency planning
Summary
AIM II has the potential to assist hospitals and physicians together with NHSBT to better manage and use the available blood supply.Potential for local, regional, national and international benchmarking
Further development will depend on the outcome of the current trial
Acknowledgements
Trial hospitals AIM II Project TeamAmericas Blood Centers
Thank you for listening