Asian Journal of Transfusion Science
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ORIGINAL ARTICLE
Year : 2020  |  Volume : 14  |  Issue : 1  |  Page : 28-32

Vasovagal reaction among whole blood donors in Hospital Pulau Pinang. A statistical-epidemiological study


Department of Transfusion Medicine, Penang General Hospital, Pulau Pinang, Malaysia

Correspondence Address:
Dr. Ilyas Hasan
Jabatan Perubatan Transfusi, Hospital Pulau Pinang, Jalan Residensi, 10990 Georgetown, Pulau Pinang
Malaysia
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Source of Support: None, Conflict of Interest: None


DOI: 10.4103/ajts.AJTS_111_17

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Context: Whole blood donation is generally considered a safe procedure; however, a small percentage of donors could develop vasovagal reactions (VVRs) during or after completion of blood donation. Aims: This study was undertaken to establish the prevalence of VVR among whole blood donors in Hospital Pulau Pinang and to investigate factors that lead to its occurrence. Settings and Design: A cross-sectional study was conducted involving 27,890 whole blood donations in 2016. Subjects and Methods: For each donation, donor's demographic and blood donation-related information was extracted from the blood bank database. Statistical Analysis Used: Qualitative data including age group, sex, race, frequency, and location of donation were analyzed using Chi-square tests, while blood pressure was analyzed using t-test. Results: Overall, 425 cases of VVRs were reported, resulting in a VVR rate of 1.5% (one event in every 65 donations). We found a statistically significant association (P < 0.05) between the occurrence of VVRs with the young age group, female gender, Indian race, first-time donor, lower predonation blood pressure, and donation performed in a mobile donation campaign. The most common vasovagal symptoms are lightheadedness (88%), followed by nausea (5.4%), muscle twitching (3.5%), vomiting (1.4%), loss of consciousness <30 s (1.4%), and paresthesia (0.2%). Conclusions: The prevalence of VVRs among whole blood donors in Hospital Pulau Pinang appeared to be low. Our study reaffirms that blood donation is a relatively safe process, and the incidence of VVR can be further reduced by ensuring strict screening procedure before blood donation.


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2006 - Asian Journal of Transfusion Science | Published by Wolters Kluwer - Medknow
Online since 10th November, 2006