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PubMed · 1661475

[Interrelations between personality characteristics and the autonomic pattern in mild strokes developed in various forms of arterial hypertension].

Abstract

The data on the characterological personality traits and the vegetative pattern in persons with cerebrovascular pathology (minor brain stroke-MBS) associated with different forms of arterial hypertension (AH) (stable, malignant, labile) make it possible to delineate two psychovegetative personality types. The first one is the hysterical one with an initial sympathetic tone and excess vegetative supply, the second one is the ++anxio-hypochondriac or depressive (more rarely) with an initial parasympathetic or combined vegetative tone with an insufficient level of vegetative supply, and vegetative reactivity. The labile (mild, episodic) forms of AH aggravated by cerebrovascular pathology (MBS) are likely to be the constituent part of the psychovegetative syndrome (the first psychovegetative personality type). The stable forms of AH (including malignant ones) aggravated by episodes of vascular dyscirculatory disorders (MBS) are similar to the second psychovegetative personality type as regards their characterological and vegetative traits. The data obtained can be used not only in subsequent studies of the etiopathogenesis of MBS associated with different forms of AH but also in terms of practical and preventive aspects.

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BibTeXRIS

A I Bardin. 1991. [Interrelations between personality characteristics and the autonomic pattern in mild strokes developed in various forms of arterial hypertension].. https://pubmed.ncbi.nlm.nih.gov/1661475/

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In diabetic patients, vascular disease and autonomic dysfunction might compromise cerebral autoregulation and contribute to orthostatic intolerance. The aim of our study was to determine whether impaired cerebral autoregulation contributes to orthostatic intolerance during lower body negative pressure in diabetic patients. Thirteen patients with early-stage type 2 diabetes were studied. We continuously recorded RR-interval, mean blood pressure and mean middle cerebral artery blood flow velocity at rest and during lower body negative pressure applied at -20 and -40 mm Hg. Spectral powers of RR-interval, blood pressure and cerebral blood flow velocity were analyzed in the sympathetically mediated low (LF: 0.04-0.15 Hz) and the high (HF: 0.15-0.5 Hz) frequency ranges. Cerebral autoregulation was assessed from the transfer function gain and phase shift between LF oscillations of blood pressure and cerebral blood flow velocity. In the diabetic patients, lower body negative pressure decreased the RR-interval, i.e. increased heart rate, while blood pressure and cerebral blood flow velocity decreased. Transfer function gain and phase shift remained stable. Lower body negative pressure did not induce the normal increase in sympathetically mediated LF-powers of blood pressure and cerebral blood flow velocity in our patients indicating sympathetic dysfunction. The stable phase shift, however, suggests intact cerebral autoregulation. The dying back pathology in diabetic neuropathy may explain an earlier and greater impairment of peripheral vasomotor than cerebrovascular control, thus maintaining cerebral blood flow constant and protecting patients from symptoms of presyncope.

Autonomic Nervous System Diseases↗