[Study of variations in the regional blood volume in the limbs under effort or thermal stress in arterial conditions (author's transl)].

The method of measuring the regional blood volume by labelling the erythrocytes with Technetium-99m has been applied to two groups of patients suffering either from arteritis of the lower limbs or from Raynaud's syndrome. A reduction in the blood volume during physical effort has been observed in arteritis of the lower limbs, followed by a rise of varying extent depending on the severity of the condition. In some cases surgical treatment has produced a particularly obvious effect on the variations in the blood volume, accompanied by a favourable clinical evolution. It has been found in patients suffering from Raynaud's syndrome that the reduction in the blood volume continues after the end of the exposition of the patients' hands to a temperature of 10 degrees C.