Blood Utilization in British Columbia, 20002002

1
Blood Utilization in British Columbia, 2000-2002

• Ms Shannon Selin, Dr. David Pi, Ms Cheryl Lewis
• British Columbia Provincial Blood Coordinating
  Office
• Vancouver, BC, Canada

2
Background

• In 1999, British Columbia (BC, population 4.1
  million) began collecting data on blood use
  through a Central Transfusion Registry (CTR).
• All BC hospitals (total 94) are required to
  report to the CTR, which contains records on all
  blood and blood products issued in the province,
  together with basic recipient information.
• Although designed primarily for
  lookback-traceback, the CTR provides a valuable,
  population-based repository of data for blood
  utilization management, research and public
  health purposes.

3
Study

• Red blood cell (RBC) and whole blood (WB)
  utilization in BC was compared for calendar years
  2000, 2001 and 2002.
• Definitions
• Transfusion Episode counts all units transfused
  to a patient on the same calendar day
• Units Discarded Indate units discarded before
  expiry
• Units Discarded Outdate units discarded after
  expiry
• Directed Units units from a designated donor
  intended for a designated recipient. In BC,
  directed donation is allowed only from
  parent/guardian to minor child. Unused directed
  units are not crossed over into the general
  allogeneic supply.

4
Allogeneic RBC Use by Volume

• Mean of Units Per Patient 4.51
  4.57 4.55
• Mean of Units Per Episode 1.86
  1.85 1.91

5
Allogeneic RBC Use Per 1,000 Population
6
Allogeneic RBC Units Wasted
4
4.8
5.2
94.9
94.2
93.8
7
Autologous RBC/WB Useby Volume

• Mean of Units Per Patient 1.73
  1.66 1.67
• Mean of Units Per Episode 1.39
  1.36 1.37
• Patients also receiving allo 82
  (9.9) 50 (9.9) 42 (10.7)

8
Autologous RBC/WB Units Wasted
45.1
2.9
50.6
3
48.8
52
2.7
46.3
48.5
9
Directed RBC/WB Use
(46.9)
(38.2)
(48.1)

• Patients also receiving allo 11
  (34.4) 6 (27.3) 5 (33.3)

10
Total RBC/WB Use by Volume
4.7
3

• Mean of Units Per Patient 4.42
  4.42 4.51
• Mean of Units Per Episode 1.85
  1.84 1.91
• Mean of Episodes Per Patient 2.39
  2.45 2.37

11
Total RBC/WB Use Per 1,000 Population
12
Total RBC/WB Units Wasted
4.6
5.6
6.2
1.1
94.4
1.1
93.4
92.7
13
Conclusion

• The increase in the transfusion rate was
  primarily due to an increase in the number of
  patients transfused and secondarily to an
  increase in the number of units per patients.
• The proportion of autologous blood in the supply
  declined from 2.7 in 2000 to 1.2 in 2002.
• The proportion of allogeneic RBCs wasted in 2001
  did not increase from the 2000 level, suggesting
  that hospitals were able to absorb the higher
  than usual blood supply occasioned by an increase
  in post-Sept. 11 donations.

14
Contact

• Shannon Selin
• Provincial Blood Coordinating Office
• Hornby Site, St. Pauls Hospital
• 1081 Burrard Street
• Vancouver, BC, Canada V6Z 1Y6
• Phone [phone], Fax [phone]
• sselin_at_providencehealth.bc.ca
• www.bloodlink.bc.ca