Prediction of fainting in blood donors

Four hundred and fourteen consecutive blood donors to a hospital blood bank were studied to discover items of value in predicting the occurrence of "reactions." Since it is probable that blood donor "reactions" are almost always vasovagal faints, they are so referred to below. Se...

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Bibliographic Details
Published inCirculation (New York, N.Y.) Vol. 23; no. 6; pp. 901 - 906
Main Author GRAHAM, D T
Format Journal Article
LanguageEnglish
Published United States 01.06.1961
Subjects
Blood Donors
Humans
Old Medline
Syncope - etiology
SYNCOPE/etiology
BLOOD DONORS
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Summary:Four hundred and fourteen consecutive blood donors to a hospital blood bank were studied to discover items of value in predicting the occurrence of "reactions." Since it is probable that blood donor "reactions" are almost always vasovagal faints, they are so referred to below. Several items of predictive value were found: none of the 62 Negroes, but 63 of the 352 white persons fainted; the younger the donor, the more likely a faint; the higher the resting pulse rate before venipuncture, the more likely a faint; admission of "nervousness" was associated with greater chance of fainting than was denial. Sex, resting blood pressure before venipuncture, and history of previous blood donation did not significantly differentiate fainters from nonfainters. The data are compatible with the hypothesis that vasovagal fainting in blood donors is the second limb of a diphasic response, and is part of relief from anxiety; the first limb is part of anxiety proper.
Bibliography:ObjectType-Article-1
SourceType-Scholarly Journals-1
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content type line 23
ISSN:0009-7322
1524-4539
DOI:10.1161/01.CIR.23.6.901