Biomedical subjects
Publications and source records attributed to R Ciszewski.
The study of 411 healthy persons indicates that erythrocyte susceptibility to centrifugal packing at 200 g increases with age, evidencing an age-related decrease in red cell deformability. Positive correlations between donor age and blood plasma fibrinogen concentration and erythrocyte sedimentation rate were confirmed. The impairment of red cell deformability may affect the circulatory efficiency in the aged.
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In 43 patients with migraine, 20 with Horton's headaches, 13 with trigeminal neuralgia and 50 healthy subjects the circulating platelet aggregates were determined by the method of Wu and Hoak. Moreover, in 23 patients with migraine, 8 with Horton's headache and 21 healthy subjects spontaneous platelet aggregation was determined in platelet-rich plasma with a transmission aggregometer. It was found that the aggregation coefficient was much lower in patients with migraine and Horton's headache than in the control group. In the group with migraine the per cent of spontaneous aggregation in 8 patients differed significantly from the mean value which was similar to that in the control group or in the group with Horton's headache. In the light of these results the authors conclude that significant changes of platelet aggregation occur in migraine and Horton's headache.