title: Alexithymia, cardiovascular reactivity, and symptom reporting during blood donation.
abstract: OBJECTIVE
  With blood donation serving as a naturalistic stressor and a controlled medical event, the aim of this study was to examine emotional and cardiovascular reactivity, self-report of vasovagal symptoms, and perceived pain as a function of scores on the Toronto Alexithymia Scale (TAS-20).
  
  
  METHODS
  Healthy young adult blood donors (N = 610) recruited at mobile blood collection clinics completed the TAS-20, pre- and postdonation measures of anxiety, postdonation measures of pain and vasovagal symptoms, and had their blood pressure and heart rate measured before and after giving blood.
  
  
  RESULTS
  Alexithymia score was positively associated with reported anxiety, pain, and vasovagal symptoms. Higher alexithymia was also associated with greater increases in predonation systolic blood pressure in anticipation of blood donation. In general, women and less experienced blood donors reported more vasovagal symptoms than men and more experienced donors, and this corresponded to higher rates of treatment by the nurses, more fainting, and fewer full units of blood obtained. However, despite more reports of vasovagal symptoms by alexithymic donors, alexithymia score was not related to these variables.
  
  
  CONCLUSIONS
  The results suggest that individuals with higher alexithymia scores were more anxious in the blood donation setting and more prone to report physical symptoms in the absence of a clear difference in the medical outcome of the blood donation procedure.
authors.affiliation: Department of Psychology, McGill University, 1205 Dr. Penfield Ave., Montreal, QC H3A 1B1, Canada.
authors.forename: Nelson
authors.initials: N
authors.lastname: Byrne
authors.forename: Blaine
authors.initials: B
authors.lastname: Ditto
mesh_terms: D000293:Adolescent; D000328:Adult; D000342:Affective Symptoms / Q000503:physiopathology* / Q000523:psychology*; D001007:Anxiety / Q000175:diagnosis; D001342:Autonomic Nervous System Diseases / Q000503:physiopathology / Q000523:psychology; D001782:Blood Donors / Q000523:psychology*; D001794:Blood Pressure / Q000502:physiology*; D005260:Female; D006339:Heart Rate / Q000502:physiology*; D006801:Humans; D008297:Male; D010146:Pain / Q000175:diagnosis; D010147:Pain Measurement; D011446:Prospective Studies