Arteriolar resistance and hemorheological disorders related to raynaud’s phenomenon

24George Mchedlishvili, Maia Mantskava, Nugzar Pargalava.

Microvascular Research DOI: 10.1006/mvre.2001.2335
Volume 62, Issue 2, September 2001, Pages 190–195.



The muscular tone of the resistance arteries was found to be a mean of 35% higher during Raynaud's phenomenon than in the healthy controls tested. The raised vascular tone was not related to the patients' age and had a pronounced tendency to rise with disease duration. RBC aggregability was a mean of 4% higher in the patients than in the healthy controls, and the difference was not reliable. We concluded that, among principal pathogenic factors which might cause deficiency of the blood supply to fingers, it is the enhanced tone of resistance arteries that is primarily responsible for the development of Raynaud's phenomenon, while hemorheological disorders are not, or are considerably less, involved in the development of the principal symptom of the disease, deficient blood supply to the fingers.

•    Raynaud's phenomenon; mechanism of microcirculatory alterations; arteriolar resistance; changes; new diagnostic technique;
•    hemorheological disorders in the microcirculation



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