To the top

Page Manager: Webmaster
Last update: 9/11/2012 3:13 PM

Tell a friend about this page
Print version

'Polycythaemia of stress'… - University of Gothenburg, Sweden Till startsida
To content Read more about how we use cookies on

'Polycythaemia of stress' in subjects with Type A and Type B behaviour patterns.

Journal article
Authors Sverker Jern
Christina Jern
Hans Wadenvik
Published in Journal of psychosomatic research
Volume 35
Issue 1
Pages 91-8
ISSN 0022-3999
Publication year 1991
Published at Wallenberg Laboratory
Institute of Clinical Neurosciences
Institute of Internal Medicine, Dept of Medicine
Pages 91-8
Language en
Keywords Adult, Arousal, physiology, Blood Cell Count, Blood Pressure, physiology, Heart Rate, physiology, Hematocrit, Hemoglobinometry, Humans, Male, Personality Tests, Polycythemia, blood, psychology, Problem Solving, physiology, Stress, Psychological, blood, complications, Type A Personality
Subject categories Clinical Medicine


To determine the importance of emotional stress for relative polycythaemia, we studied 11 subjects with the Type A and 11 subjects with the Type B behaviour patterns during short-term mental stress. All subjects were healthy, normotensive non-smoking young males aged 20-34 yr. without any medication. During rest there were no significant differences in heart rate, blood pressure, or plasma catecholamines between the two groups, but the A-group had significantly higher haemoglobin concentration (147 vs 140 g/l; p less than 0.005) and haematocrit (43.8 vs 42.1%: p = 0.05) than the B-group. In the whole group, there was a positive correlation between resting diastolic blood pressure and haemoglobin concentration (r = 0.53; p less than 0.05). In response to 10 min of mental arithmetic, haematocrit, haemoglobin and erythrocyte count rose approximately 2% (p less than 0.001 throughout). The stress-induced changes were not significantly different between the A- and B-groups. It is concluded that mild relative polycythaemia could be induced by acute emotional stress. In subjects with the Type A behaviour pattern a slight haemoconcentration is present already at rest, which further increases during stress.

Page Manager: Webmaster|Last update: 9/11/2012

The University of Gothenburg uses cookies to provide you with the best possible user experience. By continuing on this website, you approve of our use of cookies.  What are cookies?