Results 91 to 100 of about 10,602 (234)

Elevated carotid body tonic activity contributes to ventilatory acclimatization and de‐acclimatization to high altitude at rest and during exercise

open access: yesThe Journal of Physiology, EarlyView.
Abstract figure legend Participants spent 13 days at high altitude (3800 m), where the reduced inspired oxygen pressure (↓PiO2$ \downarrow {P_{{\mathrm{i}}{{\mathrm{O}}_2}}}$) which elicited ventilatory acclimatization and increased inhibition of ventilation by transient hyperoxia (ΔV̇E$\Delta {\dot V_{\mathrm{E}}}$).
Ayechew A. Getu   +6 more
wiley   +1 more source

Bronchiolitis obliterans. [PDF]

open access: yes, 1989
Bronchiolitis obliterans in the adult patient is a relatively uncommon and vexing clinical entity. This confusion results because this pathologic finding occurs in a variety of diverse clinical settings.
King, TE
core  

The influence of haemoglobin–O2 affinity on aerobic capacity in hypoxia in high‐altitude deer mice (Peromyscus maniculatus)

open access: yesThe Journal of Physiology, EarlyView.
Abstract figure legend The influence of haemoglobin–O2 affinity on aerobic capacity in hypoxia has been contentious. Many high‐altitude natives have greater haemoglobin–O2 affinity (lower P50, the O2 pressure at 50% haemoglobin saturation) than their low‐altitude counterparts, but the advantages of this change for aerobic metabolism have often remained
Kayla M. Garvey, Graham R. Scott
wiley   +1 more source

A Mechanistic Link to Peripheral Endothelial Dysfunction [PDF]

open access: yes, 2017
Background: Sleep‐disordered breathing (SDB) after acute ischemic stroke is frequent and may be linked to stroke‐induced autonomic imbalance. In the present study, the interaction between SDB and peripheral endothelial dysfunction (ED) was investigated ...
Anker, Stefan D.   +12 more
core   +1 more source

Hypoxia‐induced vulnerability of the somatosensory nervous system

open access: yesThe Journal of Physiology, EarlyView.
Abstract figure legend Sensory neurons are highly energy dependent and rely on sufficient oxygen availability to maintain metabolic stability and effective neurocommunication. Within the somatosensory system, even modest reductions in tissue oxygen tension impair neuronal respiration, forcing a shift toward less efficient metabolic pathways that ...
Jack Corbett, Richard P. Hulse
wiley   +1 more source

Respiratory muscle strength is decreased after maximal incremental exercise in trained runners and cyclists [PDF]

open access: yes, 2018
The respiratory muscle fatigue seems to be able to limit exercise performance and may influence the determination of maximal oxygen uptake (VO2max) or maximum aerobic work rate during maximal incremental test.
Ahmaidi, Said   +3 more
core   +5 more sources

Non-pulsatile blood flow is associated with enhanced cerebrovascular carbon dioxide reactivity and an attenuated relationship between cerebral blood flow and regional brain oxygenation

open access: yesCritical Care, 2019
Background Systemic blood flow in patients on extracorporeal assist devices is frequently not or only minimally pulsatile. Loss of pulsatile brain perfusion, however, has been implicated in neurological complications.
Cecilia Maria Veraar   +9 more
doaj   +1 more source

Hyperventilation and seizures in an adolescent female

open access: yesMonaldi Archives for Chest Disease, 2015
A 16 year-old girl was admitted after suffering from recurrent episodes of dyspnea and stridor, cyanosis, loss of contact, stiffening of all four limbs, clenching of the jaw and eye retroversion that lasted for a few seconds to a minute, followed by slow
F. Nicosia   +8 more
doaj   +1 more source

Brain perfusion, part 2: anesthesia and brain perfusion in small animals [PDF]

open access: yes, 2010
Sedatives and anesthetics can influence cerebral metabolism and respiratory and cardiovascular dynamics, which results in changes in cerebral perfusion.
Gielen, Ingrid   +4 more
core   +1 more source

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