Results 141 to 150 of about 832,170 (284)

Brain strain: Blood flow and metabolism in environmental extremes

Experimental Physiology, EarlyView.
Abstract This narrative review compares and contrasts the most commonly encountered environmental stressors on human cerebrovascular functioning. From high altitude and space, extreme apnoea, heat and cold stress, the impact of these stressors on the regulation of cerebral blood flow (CBF) and oxygen metabolism (CMRO2${\mathrm{CM}}{{\mathrm{R}}_ ...
Dario Vrdoljak, Damian M. Bailey, Travis D. Gibbons, Philip N. Ainslie   +3 more
wiley   +1 more source

The acute effects of exercise intensity and inorganic nitrate supplementation on the Buckberg ratio in postmenopausal females

Experimental Physiology, EarlyView.
Abstract Menopause increases coronary heart disease risk, in part through reduced oestrogen‐mediated nitric oxide (NO) bioavailability. The Buckberg ratio, an index of myocardial oxygen supply–demand balance, in which higher values reflect more favourable myocardial perfusion, is lower in postmenopausal females (PMFs) than in age‐matched males.
Cassandra C. Derella, Austin C. Hogwood, Joaquin Ortiz de Zevallos, Nathan R. Weeldreyer, Kaitlin M. Love, Arthur Weltman, Jason D. Allen   +6 more
wiley   +1 more source

Delayed Emergence Due to Severe Respiratory Acidosis Following Prolonged Spine Surgery: A Case Report. [PDF]

Cureus
Khan IA, Tiwari JP.
europepmc   +1 more source

Depiction of Delirium in Contemporary Medical Television Dramas: A Descriptive Content Analysis

Journal of the American Geriatrics Society, EarlyView.
Morgan Guest, Brooke Johnson, Molly Pistono, Jacqueline M. Kruser, Eduard E. Vasilevskis, Blair P. Golden   +5 more
wiley   +1 more source

Effect of chronic high‐altitude hypoxia on retinal vascular phenotype, choroidal and retinal vasoreactivity in Peruvian highlanders

Experimental Physiology, EarlyView.
Abstract High‐altitude chronic hypoxia can induce excessive erythrocytosis (EE, defined as a haemoglobin concentration of ≥21 g/dL in men), leading to hyperviscosity and promoting endothelial dysfunction. We aimed to assess whether EE affects the retinal vascular phenotype and the ophthalmological vascular response to CO2.
Aymeric Paillisser, Julien Vincent Brugniaux, Florence Berquet, Jeremy De Abreu, Stephen Hogg, Emanuele Trucco, Martial Geiser, Tom Macgillivray, Aurélien Pichon, Paul Robach, Benoit Champigneulle, Samuel Verges, Christophe Chiquet   +12 more
wiley   +1 more source

The role of acid‐base balance in cerebrovascular and ventilatory responses to CO2 during 10 h normobaric hypoxia

The Journal of Physiology, EarlyView.
Abstract figure legend During 10 h exposures to normobaric hypoxia exposure there was a selective leftward shift in ventilatory response to hyperoxic hypercapnic rebreathing, but not the cerebrovascular response. The key findings are that the resetting of the central chemoreflex to lower PCO2${P_{{\mathrm{C}}{{\mathrm{O}}_2}}}$ during early hypoxic ...
Holly Barclay, Saptarshi Mukerji, Bengt Kayser, Jui‐Lin Fan   +3 more
wiley   +1 more source

Assessment of Conventional Oxygen Therapy, High-Flow Nasal Cannula, and Non-Invasive Ventilation to Secure Bronchofiberoscopy in Patients with Respiratory Acidosis: A Narrative Review and a Proposal for a Protocol in View of a Randomized Multicenter Study. [PDF]

J Clin Med
Rycerski M, Warcholiński A, Zieliński M, Longhini F, Sircar M, Oraczewska A, Latos M, Rzepka-Wrona P, Białka S, Brożek G, Skoczyński S.   +10 more
europepmc   +1 more source

Neuromuscular fatigability with repeated exercise in hypoxia: From single‐joint paradigms to sprints

The Journal of Physiology, EarlyView.
Abstract figure legend Acute hypobaric or normobaric hypoxic exposure accelerates neuromuscular fatigability during repeated exercise. Indices of peripheral and central fatigue are not different at exhaustion in mild, moderate and severe hypoxia compared with normoxia, but task failure occurs earlier.
Luca Ruggiero, Franck Brocherie, Olivier Girard, Nathan Townsend, Chris J. McNeil, Grégoire P. Millet   +5 more
wiley   +1 more source

Severe Respiratory Acidosis-induced Involuntary Hyper defecation: The Role of Medullary Caudal Raphe Nuclei. [PDF]

Niger Med J
Khandelwal A, Dikshit P, Deori P, Baidya DK.   +3 more
europepmc   +1 more source

Cardiovascular effects of intravenous colforsin in normal and acute respiratory acidosis canine models: A dose-response study. [PDF]

PLoS One, 2019
Itami T, Hanazono K, Oyama N, Sano T, Makita K, Yamashita K.   +5 more
europepmc   +1 more source