Excessive sympathetic hyperactivity in hypertension secondary to neurovascular compression of the medulla oblongata
نویسندگان
چکیده
منابع مشابه
Essential hypertension and neurovascular compression at the ventrolateral medulla oblongata: MR evaluation.
PURPOSE To investigate, using MR imaging, neurovascular compression at the ventrolateral medulla oblongata in patients with essential hypertension. METHODS Thirty-two patients with essential hypertension (57.6 +/- 7 years of age), 6 patients with secondary hypertension (56.7 +/- 10.3 years of age), and 18 control subjects (50.5 +/- 11 years of age) were evaluated. Transaxial three-dimensional...
متن کاملRole of the medulla oblongata in hypertension.
Brain pathways controlling arterial pressure are distributed throughout the neuraxis and are organized in topographically selective networks. In this brief review, we will focus on the medulla oblongata. The nucleus tractus solitarius (NTS) is the primary site of cardiorespiratory reflex integration. It is well accepted that lesions or other perturbations in the NTS can result in elevations of ...
متن کاملNeurovascular compression: sympathetic activity in severe arterial hypertension.
Compression of the rostral ventrolateral medulla oblongata (RVLM) by an abnormally located artery is regarded as one possible cause of arterial hypertension. There exists a limited set of data suggesting that increased sympathetic activity in patients with RVLM compression may lead to arterial hypertension. Accordingly, we decided to assess the sympathetic activity in patients with severe arter...
متن کاملMR imaging findings of medulla oblongata involvement in posterior reversible encephalopathy syndrome secondary to hypertension.
Although the combination of MR imaging findings and clinical evidence of hypertension may suggest the diagnosis of posterior reversible encephalopathy syndrome (PRES), MR imaging findings with only involvement of the medulla oblongata pose a diagnostic dilemma. In the cases presented here, we demonstrated MR imaging findings of a presumed brain stem (medulla oblongata) variant of PRES and empha...
متن کاملIncreased sympathetic nerve activity correlates with neurovascular compression at the rostral ventrolateral medulla.
We used microneurography to measure muscle sympathetic nerve activity (MSNA) in 25 hypertensive subjects and correlated these results with the presence or absence of signs of neurovascular compression (NVC) at the rostral ventrolateral (RVL) medulla on MRI. Subjects were divided into 3 groups based on MRI findings: NVC-, no MRI evidence of NVC (N=9); NVC+contact, image showing artery in contact...
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ژورنال
عنوان ژورنال: American Journal of Hypertension
سال: 2002
ISSN: 0895-7061
DOI: 10.1016/s0895-7061(02)02768-1