Capillary Resistance: Physiological Values in Childhood

Journal/Book: Acta paediat. hung. Vol. 4 1963. 1963;

Abstract: First Department of Paediatrics University Medical School Budapest SUMMARY After discussing the problems of the terminology and method of examination of capillary resistance (fragility) as well as the normal values for children and adults and the factors that influence the test the results obtained in a total of 900 tests performed in 335 subjects (140 premature infants 70 normal newborns 65 infants 45 children 15 controls) have been reported. An apparatus devised an Borbély's principles has been used in the tests. Suction at 260 mm Hg for 1 minute produced no petechial haemorrhage in prematures newborns infants and children but when the duration of suction was increased to 2 minutes one petechia appeared in 96 per cent of the cases. It was remarkable that in pathological cases the doubling of the duration of suction caused no changes in the number and quality of petechiae as compared with the results obtained with suction lasting 1 minute. The upper physiological limit of capillary resistance is considered to be 180 mm Hg and the lower limit which is certainly pathological 100 mm Hg. . . .

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