Results 121 to 130 of about 38,036 (248)

Whole‐body hot water immersion effect on cerebral haemodynamics and subsequent cerebrovascular reactivity to carbon dioxide

Experimental Physiology, EarlyView.
Abstract To test the hypothesis that hot water immersion (HWI) improves cerebrovascular function via shear‐mediated mechanisms, this study determined cerebrovascular reactivity to carbon dioxide (CVRCO2${\mathrm{CV}}{{\mathrm{R}}_{{\mathrm{C}}{{\mathrm{O}}_2}}}$) before and after 60 min of 39°C HWI and a 21°C air control (CON) in 15 healthy ...
Samuel F. Leaney, Ester Tommasini, Guto W. Hughes, Alison M. Shepherd, Nyah D. Kingdon, Justin S. Lawley, Geoff B. Coombs, Jonathan P. Moore, Samuel J. Oliver   +8 more
wiley   +1 more source

Do hypoxemia or hypercapnia predispose to atrial fibrillation in breathing disorders, and, if so, how? [PDF]

, 2010
Rankin, A.C., Workman, A.J.
core   +1 more source

Hypercapnia and Oxygen Therapy in Older Asthmatic Patients [PDF]

, 2004
Excessive oxygen administration in hypercapnic chronic obstructive pulmonary disease predisposes to worsening respiratory failure during intercurrent respiratory illness.
Ting, J. Y. S.
core   +1 more source

Amyloid beta plaque pathology induces chemosensory deficits and increases apnoeas in the 5XFAD mouse model of Alzheimer's disease. [PDF]

J Physiol
Abstract figure legend Amyloid beta deposition in 5XFAD mice produces respiratory dysfunction. Amyloid beta (Aβ) plaque deposition in respiratory related regions of the brainstem was observed in 5XFAD mice, which also displayed significant reductions in their hypercapnic and hypoxic ventilatory responses.
Sprenger RJ, Ewald AC, Romero PZ, Marino KM, Gumnit MG, McCann EC, Radcliff AB, Ulland TK, Watters JJ, Baker TL.   +9 more
europepmc   +2 more sources

Influence of facial cooling on carotid body tonic activity and sensitivity

Experimental Physiology, EarlyView.
Abstract Facial cooling can increase ventilation and augment the hypoxic ventilatory response. Whole body cooling increases both carotid body tonic activity and sensitivity; however, whether isolated facial cooling induces similar carotid body hyperexcitability was unknown.
Robyn Morley, Liam D. Corr, Elliott J. Jenkins, Joseph A. Killick, Travis D. Gibbons, Joshua C. Tremblay   +5 more
wiley   +1 more source

Cardiovascular responses to severe hypercapnia of short duration

, 1964
Dogs under pentobarbital anesthesia were employed in an investigation of the effect of abrupt, severe hypercapnia upon blood pressure, heart rate, and force of myocardial contraction.
Emmett S. Manley, Clinton B. Nash, R. A. Woodbury   +2 more
core   +1 more source

Lower cerebral blood flow but not cerebrovascular response in elastin haploinsufficient mice

Experimental Physiology, EarlyView.
Abstract Elastin insufficiency is associated with structural differences in the large elastic arteries and cerebral artery dysfunction. However, previous studies have not assessed potential sex differences in cerebrovascular function. We measured cerebral blood flow (CBF) using arterial spin labeling MRI at rest and in response to hypercapnia challenge
Abigail E. Cullen, Emily H. Reeve, Nick R. Winder, Grant D. Henson, Nayantara Arora, Thomas Leonhardt, Ainsley Hogan, Sahana Krishna Kumaran, Naly Setthavonsack, Victoria Krajbich, Art Riddle, Benjamin Zimmerman, Nabil J. Alkayed, Martin M. Pike, Randall L. Woltjer, Ashley E. Walker   +15 more
wiley   +1 more source

Higher baseline heart rate variability in CCHS patients with progestin-associated recovery of hypercapnic ventilatory response

Respiratory Research
After a fortuitous observation of two cases of chemosensitivity recovery in women with congenital central hypoventilation syndrome (CCHS) who took desogestrel, we aimed to evaluate the ventilatory response to hypercapnia of five CCHS patients with or ...
Caroline Sevoz-Couche, Maxime Patout, Beny Charbit, Thomas Similowski, Christian Straus   +4 more
doaj   +1 more source

Cerebrovascular regulation during heat stress

Experimental Physiology, EarlyView.
Abstract Given that the brain is a highly metabolic organ and is enclosed by the skull, effective regulation of cerebral blood flow (CBF), not only for oxygen and nutrients supply but also as a means of convective heat exchange, is critical for preventing excessive elevations in brain temperature.
Kanoko Ito, Manabu Shibasaki
wiley   +1 more source

Vascular responses of choroid plexus during hypercapnia in rats

, 1991
The response of blood flow to choroid plexus (CPBF) during hypercapnia is controversial. The goal of this study was to determine the effect of hypercapnia on CPBF in unanesthetized rats.
S. C. Jones, R. B. Page, J. L. Williams, R. M. Bryan   +3 more
core   +1 more source