American journal of hypertension
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Cerebral autoregulation tightly controls blood flow to the brain by coupling cerebral metabolic demand to cerebral perfusion. In the setting of acute brain injury, such as that caused by ischemic stroke, the continued precise control of cerebral blood flow (CBF) is vital to prevent further injury. ⋯ While it is likely safe to modestly reduce blood pressure by 10-15 mm Hg in most patients with acute ischemic stroke, to date, there are no controlled trial data to indicate that reducing blood pressure is beneficial. There may be subgroups, such as those with persistent large vessel occlusion, large infarcts with edema causing increased intracranial pressure or local mass effect, or chronic hypertension, in which blood pressure reduction may lead to impaired cerebral perfusion in noninfarcted tissue.
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Accumulating evidence suggests the potential superiority of office aortic blood pressure (BP) over brachial in the management of arterial hypertension. The noninvasive aortic 24-h ambulatory brachial BP monitoring (ABPM) is potentially the optimal method for assessing BP profile. The objective of the present study was to investigate the feasibility and reproducibility to perform noninvasively 24-h aortic ABPM with a novel validated brachial cuff-based automatic oscillometric device (Mobilo-O-Graph) which records brachial BP and waveforms and assesses aortic BP via mathematical transformation. ⋯ In conclusion, these data suggest that noninvasive 24-h ABPM is feasible and provides reproducible values. Future studies should validate the prognostic ability of 24-h aortic hemodynamics.
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The aim of this study was to evaluate whether body mass index (BMI) is independently correlated with plasma aldosterone concentration (PAC) in treated essential hypertensive patients, and whether the relationship between BMI and high blood pressure (BP) can be partially mediated by PAC despite renin-angiotensin-aldosterone system blockade. ⋯ In treated essential hypertensive patients, a BMI ≥ 35 kg/m(2) is independently, albeit modestly, correlated with PAC. The correlation between BMI ≥ 35 kg/m(2) and PAC holds true even in ACEI/ARB-treated patients. Further study is required to determine whether the association of obesity with BP is mediated by PAC in hypertensive patients on stable therapy with ACEIs or ARBs.
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Few studies have compared different blood pressure (BP) indexes for end-stage renal disease (ESRD) risk among individuals with chronic kidney disease. ⋯ These data suggest that of several blood pressure indexes including DBP, PP and MAP, SBP may have the strongest association with ESRD incidence among individuals with reduced eGFR.
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The influence of selective serotonin reuptake inhibitors (SSRIs) on blood pressure is poorly understood. We hypothesized that if SSRIs have an influence on blood pressure, this might become manifest in changes in intraoperative blood pressure. We aimed to study the association between perioperative use of SSRIs and changes in intraoperative blood pressure by measuring the occurrence of intraoperative hyper- and hypotension. ⋯ Continuation of treatment with SSRIs before surgery was associated with a briefer duration of intraoperative hypotension.