Results 91 to 100 of about 4,582 (179)

Ventilatory and Autonomic Regulation in Sleep Apnea Syndrome: A Potential Protective Role for Erythropoietin?

open access: yesFrontiers in Physiology, 2018
Obstructive sleep apnea (OSA) is the most common form of sleep disordered breathing and is associated with wide array of cardiovascular morbidities. It has been proposed that during OSA, the respiratory control center (RCC) is affected by exaggerated ...
David C. Andrade   +14 more
doaj   +1 more source

Neurocardiology: Brain–Heart Interactions in the Heart

open access: yesMedComm, Volume 7, Issue 9, September 2026.
The heart and brain maintain systemic homeostasis through bidirectional communication involving neural, biochemical, and mechanical pathways. Dysregulation of these pathways contributes to a spectrum of conditions involving heart–brain interactions, including Takotsubo syndrome, the epileptic heart, stroke–heart syndrome, heart failure, cardiac ...
Wentao Wang   +3 more
wiley   +1 more source

Update on the Pathophysiology, Aetiology and Management of Central Sleep Apnoea

open access: yesRespirology, Volume 31, Issue 9, Page 873-881, September 2026.
ABSTRACT Central sleep apnoea (CSA) of the periodic breathing type occurs during the transition between wakefulness and stage 1 and 2 non‐REM sleep. In adults at sea level, it occurs most commonly due to advanced heart failure (HF) or chronic opioid use and in ~5% of obstructive sleep apnoea patients initiating CPAP.
Sahan D. Chandrasekara   +1 more
wiley   +1 more source

Ventilatory restraint of sympathetic activity during chemoreflex stress

open access: yes, 2010
The within-breath modulation of muscle sympathetic nerve activity (MSNA) is well established, with greater activity occurring during expiration and less during inspiration.
Zeljko Dujic   +4 more
core   +1 more source

Hypoxic peripheral chemoreflex stimulation‐dependent cardiorespiratory coupling is decreased in swimmer athletes

open access: yesPhysiological Reports
Swimmer athletes showed a decreased ventilatory response and reduced sympathetic activation during peripheral hypoxic chemoreflex stimulation. Based on these observations, we hypothesized that swimmers develop a diminished cardiorespiratory coupling due ...
David C. Andrade   +8 more
doaj   +1 more source

Carotid Body-Mediated Chemoreflex Drive in The Setting of low and High Output Heart Failure

open access: yesScientific Reports, 2017
Enhanced carotid body (CB) chemoreflex function is strongly related to cardiorespiratory disorders and disease progression in heart failure (HF). The mechanisms underlying CB sensitization during HF are not fully understood, however previous work ...
Rodrigo Del Rio   +7 more
doaj   +1 more source

Microneurography on the mountain: Evaluating the role of ROS in mediating sympathoexcitation at altitude

open access: yes
The Journal of Physiology, EarlyView.
Johan S. Thiessen   +2 more
wiley   +1 more source

Influence of hypercapnia and hypercapnic hypoxia on the heart rate response to apnea

open access: yesPhysiological Reports
We aimed to determine the relative contribution of hypercapnia and hypoxia to the bradycardic response to apneas. We hypothesized that apneas with hypercapnia would cause greater bradycardia than normoxia, similar to the response seen with hypoxia, and ...
Benjamin R. O'Croinin   +5 more
doaj   +1 more source

Confined spaces in space: Cerebral implications of chronic elevations of inspired carbon dioxide and implications for long‐duration space travel

open access: yesExperimental Physiology, Volume 111, Issue 9, Page 3968-3982, 1 September 2026.
Abstract Cerebrovascular regulation is critically dependent upon the arterial partial pressure of carbon dioxide (PaCO2${P_{{\mathrm{aC}}{{\mathrm{O}}_{\mathrm{2}}}}}$), owing to its effect on cerebral blood flow, tissue PCO2${P_{{\mathrm{C}}{{\mathrm{O}}_{\mathrm{2}}}}}$, tissue proton concentration, cerebral metabolism and cognitive and neuronal ...
Jay M. J. R. Carr   +2 more
wiley   +1 more source

On the adaptive significance of group III/IV muscle afferent feedback for the cardiovascular response during sustained locomotion in humans

open access: yesThe Journal of Physiology, Volume 604, Issue 17, Page 7112-7124, 1 September 2026.
Abstract figure legend Group III/IV leg muscle afferent feedback has previously been recognized as an important determinant of the cardiovascular response to exercise lasting <5 min. Here we demonstrate that the activity of these neurons is crucial in regulating central and peripheral haemodynamic responses during steady state exercise of longer ...
D. Iannetta   +8 more
wiley   +1 more source

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