Hypertension and Dizziness: is there a Relation?

Abstract

One of the most frequent complaints of patients with hypertension (HT) is dizziness. Dizziness is understood as a variety of subjective sensations that patients define as “dizziness” – a sense of instability when walking, the illusion of rotation of surrounding objects, the feeling of approaching fainting, the inability to concentrate, and “fog” in the head. Experts share the systemic dizziness (vertigo) and non-systemic. The causes of vertigo in most cases are diseases of the inner ear (Meniere's disease, benign paroxysmal positional vertigo [BPPV], vestibular neuronitis. The most common form of dizziness is psychogenic dizziness. In the vast majority of cases, HT is not the cause of dizziness. The most common cause of vestibular (systemic) dizziness in patients with HT, as in the general population, is BPPV, and the most common cause of non-systemic dizziness is psychogenic dizziness. Among other causes of dizziness in patients with HT should be kept in mind too fast and/or intensive lowering of blood pressure, rhythm and conduction disorders, orthostatic hypotension (especially in elderly and senile patients in the presence of concomitant diabetes).

Tailoring Vibrational Excitation Pathways for High-Yield Oxidation of Methane to Methanol

“…2C). In other words, previous studies that report high methanol selectivity and low conversion (generally with thermal catalysis, [10][11][12][13][14][15][16][17] ) or low methanol selectivity and high conversion (generally with plasmas, 18,19,[21][22][23][24][25][26][27] ) can be related based on the residence time of reactants and the energetics of reactant excitations in plasmas.…”

“…Direct methane to methanol (DMtM) conversion in a single-step shows promise in methane reformation by bypassing syngas production. [10][11][12][13][14][15][16][17][18][19][20][21][22][23][24][25][26][27] However, to date, DMtM conversion processes have encountered a fundamental limit (i.e., selectivity-conversion tradeoff (Fig. 1C)) 28 that causes methanol selectivity to decrease as methane conversion increases.…”

“…30 Methanol, being more reactive than methane, gets overoxidized to undesired byproducts (including CO and CO2) that results in a selectivity -conversion limit. (C) Both traditional thermal catalysis [10][11][12][13][14][15][16][17] and non-thermal plasmas 18,19,[21][22][23][24][25][26][27] have a selectivity -conversion limit in the DMtM process. As conversion increases, selectivity decreases which constrains the maximum methanol yield.…”

The Interaction of Hypertension for Vertigo in Audiovestibular Medicine Clinic

“…As much as cardiovascular diseases causing microangiopathy has been implicated in labyrinthine pathologies, orthostatic hypotension is common in the elderly patients especially in the presence of coexisting diabetes mellitus [46]. These symptoms of vertigo may also occur in young adults even in the absence of cardiovascular risk factors [35].…”