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Unusual Events in Blood Donation B. Samuelsen, B. Aagaard, J. Jorgensen PowerPoint Presentation
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Unusual Events in Blood Donation B. Samuelsen, B. Aagaard, J. Jorgensen. Betina Samuelsen M.D. Regional Transfusion Centre Dept. Of Clinical Immunology Aarhus University Hospital, Skejby Hospital Denmark. Materials. March - December 2003 Donations: 41,274 Unusual events: 2,406

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Unusual Events in Blood DonationB. Samuelsen, B. Aagaard, J. Jorgensen

Betina Samuelsen M.D.

Regional Transfusion Centre

Dept. Of Clinical Immunology

Aarhus University Hospital, Skejby Hospital

Denmark

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Materials

  • March- December 2003
    • Donations: 41,274
    • Unusual events: 2,406
    • Occurrence /1,000 donations 58
groups of unusual events
Groups of unusual events
  • The groups consisted of the following unusual events:
groups of unusual events1
Groups of unusual events
  • The groups consisted of the following unusual events:
all groups1
All groups

Occurrence of the 4 main groups

needle injury1
Needle injury
  • Donors with needle injury divided according to age and gender given as % of all donations with the same age and gender I
needle injury2
Needle injury
  • Unusual events:
    • Haematoma: 73 %
  • Gender:
    • More women than men experienced a needle injury
  • Age:
    • In women occurrence increased with age
vasovagal reaction1
Vasovagal reaction
  • Donors with vasovagal reactions divided according to age and gender given as % of all donations with the same age and gender
vasovagal reaction2
Vasovagal reaction
  • Unusual events:
    • Most of the vasovagal reactions were mild (83 %)
  • Gender:
    • More women than men had vasovagal reactions
  • Age:
    • More frequent occurrence in young donors
low hb concentration
Low Hb concentration
  • Donors with low Hb conc. divided according to age and gender given as % of all donations with the same age and gender.
low hb concentration1
Low Hb concentration
  • Gender:
    • More women than men had a low Hb concentration
  • Age:
    • Occurrence increased in women age 18-49,
    • and decreased in women > 50 years (3-1 %)
difficult veins among 403 donors with difficult veins 94 wanted to stay in the donor file
Difficult veinsAmong 403 donors with difficult veins 94 % wanted to stay in the donor file
  • Comments
    • Donors are highly motivated
    • However, ought we to accept these donors in spite of the increased risk of an unusual event?
conclusion 1 a registration of all unusual events
Conclusion 1A registration of all unusual events:
  • Revealed some unexpected results (the relatively large number of donors with low Hb conc. and difficult veins)
  • Revealed an exact number of the important/serious complications (needle injury and vasovagal reactions)
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Conclusion 2All kinds of unusual events occurred more often in women, and vasovagal reactions occurred especially in young donors Number of needle injuries were low (6 %)

  • Comments
    • The number is still unacceptably high
    • B. Aagaard et al (poster ISBT 2004) have shown a risk of prolonged symptoms in the event of severe complications
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Conclusion 3A registration of all unusual events gives a possibility to improve donor safety in a rational way
  • Comments
    • Improved needle insertion technique (since 2001)
    • Well-trained staff
    • If the Hb conc. is low in the normal range, the bleeding frequency should be lowered
    • Take care of the donors - make them feel comfortable, and give them plenty to drink and eat