Results 121 to 130 of about 74,100 (214)

Investigation of in vivo measurement of cerebral cytochrome-c-oxidase redox changes using near-infrared spectroscopy in patients with orthostatic hypotension [PDF]

, 2007
We have previously used a continuous four wavelength near infrared spectrometer to measure changes in the cerebral concentrations of oxy- (Δ[HbO2] and deoxy- haemoglobin (Δ[HHb]) during head-up tilt in patients with primary autonomic failure.
Tachtsidis, I., Cooper, C.E., Smith, M., Leung, T.S., Delpy, D.T., Elwell, C.E., Tisdall, M.   +6 more
core  

Internal Jugular Vein as an Alternative Access for Pacemaker Implantation: A Mostly Left IJ Case Series

Pacing and Clinical Electrophysiology, EarlyView.
ABSTRACT Background Leadless pacemakers traditionally rely on femoral venous access, which may be limited in patients with unfavorable IVC anatomy, prior interventions, or situations where preserving femoral access is preferred. Internal jugular (IJ) access offers an alternative route, but real‐world data on IJ implantation of single‐ and dual‐chamber ...
Maya Asami Takagi, William Leon, Colin Mackenzie, Daniel Cortez   +3 more
wiley   +1 more source

Orthostatic hypotension: Causes, mechanisms, and influencing factors

, 1995
Blood pressure homeostasis is particularly challenged by moving to an upright position.The autonomic nervous system, structural factors, infravascular volume, and circulating and local hormones influence the body's response to a change in posture ...
Smith, G. D.P., Bannister, R., Mathias, C. T., Van Lieshout, J. J., Valeta, P., Frankel, L., Brooks, D. J., Redmond, S., Wieling, W., Browse, N., Robertson, D., Frankel, H. L., Hollister, A. S., Biaggioni, I., Christensen, N. J., Mathias, C. J., Durrten, G., Cortelli, P., Senard, J. M., Van Leeuwen, A. M., Armstrong, E.   +20 more
core  

Not So Fast

Journal of the American Geriatrics Society, EarlyView.
A. Mark Clarfield
wiley   +1 more source

Time‐course analysis of cerebral circulation and cardiorespiratory responses to acute central blood volume reduction in healthy young males

Experimental Physiology, EarlyView.
Abstract Central blood volume (CBV) reduction challenges circulatory and respiratory homeostasis, particularly during the initial compensatory phase (0–2 min), when rapid physiological adaptations occur. In this study, we examined dynamic cardiorespiratory responses to CBV reduction using lower‐body negative pressure (LBNP) in 11 healthy young males ...
Marina Feeley, Tomoki Watada, Go Ito, Ai Shimada, Toru Sawai, Hideomi Nakata, Shingo Otsuki, Tadayoshi Miyamoto   +7 more
wiley   +1 more source

Diagnosing Dementias: Many Names, Many Faces

Journal of the American Geriatrics Society, EarlyView.
Michael Tran Duong
wiley   +1 more source

Vascular, inflammatory and perceptual responses to hot water immersion: Impacts of water depth and temperature in young healthy adults

Experimental Physiology, EarlyView.
Abstract Repeated hot water immersion can improve cardiovascular health; however, the respective effects of distinct immersion protocols remain unclear. Twenty‐two healthy adults completed three 30‐min hot water immersion bouts of different water temperatures and immersion depths (40°C shoulder‐deep immersion, 40‐Shoulder; 42°C waist‐deep immersion, 42‐
Campbell Menzies, Neil D. Clarke, Charles J. Steward, Charles Douglas Thake, Christopher J. A. Pugh, Tom Cullen   +5 more
wiley   +1 more source

Sex differences in dynamic cerebral autoregulation responses to resistance and endurance training in humans

Experimental Physiology, EarlyView.
Abstract Exercise maintains brain health and reduces the risk of cerebrovascular diseases, such as stroke and dementia. The benefits of different ‘modalities’ of exercise on male and female cerebral autoregulation are unclear. In this study, we compared adaptations in dynamic cerebral autoregulation (dCA) during spontaneous and forced oscillations in ...
Hannah J. Thomas, Channa E. Marsh, Leanne Lester, Louise H. Naylor, Kurt J. Smith, Daniel J. Green   +5 more
wiley   +1 more source

Effect of repeated hot water immersion on cognitive performance, cerebrovascular function, sleep and biomarkers of neurodegeneration in older adults

Experimental Physiology, EarlyView.
Abstract Ageing is associated with cognitive decline and increased risk of developing neurodegenerative disease. Repeated passive heating, using hot water immersion (HWI), may improve cognitive performance via improved cerebral oxygenation, but this is yet to be examined in older adults.
Daniel D. Piccolo, Jo Corbett, Joseph T. Costello, Thomas B. Williams, Thomas J. James, Janis K. Shute, Mohammad G. A. Alnajjar, Luke C. Hudson, Poppy A. Marsh, Veronika Praskacova, Harry S. Mayes, Michael Tipton, Maria Perissiou, Melitta A. McNarry, Kelly A. Mackintosh, Zoe L. Saynor, Anthony I. Shepherd   +16 more
wiley   +1 more source

A therapeutic challenge relating to the association of orthostatic hypotension and supine hypertension in a patient with cardiac autonomic neuropathy: a case report

Journal of Medical Case Reports
Background Cardiac autonomic neuropathy is a highly prevalent pathology in the diabetic population, and is the leading cause of death in this population. Orthostatic hypotension is the main clinical manifestation of the disease.
Jama Dounia, Haless Kamal, Selmaoui Marouane, Haboub Meryem, Habbal Rachida, Drighil Abdenasser, Azzouzi Leila   +6 more
doaj   +1 more source