TITLE

ON THE PROBLEM OF REACTIBILITY OF MEDULLARY VASOMOTOR CENTERS IN INITIAL STAGES OF HYPERTENSION

AUTHOR(S)
Bartko, D.; Dani�ov�, J.
PUB. DATE
March 1972
SOURCE
Angiology;Mar1972, Vol. 23 Issue 3, p140
SOURCE TYPE
Academic Journal
DOC. TYPE
Article
ABSTRACT
The object of the paper is to investigate the reactibility of the vestibular structures of the brain stem during the initial stages of hypertension. The paper is based on 20 young patients suffering from hypertension, average age 22.1 years. The controls were 10 patients of 22 years. The stimuli chosen were: 1. caloric stimulation by water of 16 degrees centigrade, 2. mechanical stimulation by rotation of the patient. The following data were assessed: 1. the latency period, i.e. the time between the application of the caloric stimulation and the onset of the nystagmus, 2. the duration of the nystagmus after the application of the caloric stimulus, 3. the duration of the postrotational nystagmus in the neutral head position, in bead anteflexion, in inclination of the head to the right and to the left during rotation to both sides. It was found: 1. after caloric stimulation the latency period was significantly longer in the group of young patients with hypertension /p < 0.002/ and the duration on the nystagmus was significantly shorter /p < 0.001/ as compared with the normal controls; in 50% of the cases no nystagmus could be produced at all. 2. The average duration of the postrotational nystagmus was significantly shorter in the group of young patients with hypertension /p < 0.001 - p < 0.05/ for the various bead positions as compared with the controls. 3. Hyperreactibility is therefore no common principle of the initial stages of hypertension, the reactibility of the vestibular structures of the brain stem being even lowered.
ACCESSION #
16354255

 

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