Results 171 to 180 of about 6,013,910 (239)

Mechanisms reducing parasympathetic activity in chronic hypoxia

The Journal of Physiology, EarlyView.
Abstract figure legend Parasympathetic activity is reduced in chronic hypoxia, but the underlying mechanism(s) are unclear. Using β‐adrenergic blockade to isolate parasympathetic control of heart rate at sea level and after 9‐12 days at high altitude, we investigated whether (i) chemoreflex activation, (ii) increased pulmonary ventilation and/or (iii ...
Lauren E. Maier, Andrew Douglas, Katharine Foster, Elliott J. Jenkins, Liam D. Corr, Peter Rasmussen, James Anholm, Travis D. Gibbons, Phil N. Ainslie, Mike Stembridge, Christoph Siebenmann   +10 more
wiley   +1 more source

Uncommon cause of increased end-tidal carbon dioxide during endoscopic retrograde cholangiopancreatography under sedation. [PDF]

Indian J Anaesth
Ravichandran N, Thangaswamy CR, Sekar S.
europepmc   +1 more source

The influence of metaboreflex activation on pulmonary pressure with combined chemoreflex activation in acute and chronic hypoxia

The Journal of Physiology, EarlyView.
Abstract figure legend Activation of both the metaboreflex via post‐exercise circulatory occlusion and the chemoreflex via acute and chronic hypoxia increased pulmonary artery systolic pressure. Coactivation of these reflexes further increased pulmonary artery pressure in an additive manner.
Lauren E. Maier, Elliott J. Jenkins, Andrew Douglas, Jack Talbot, Alexandra Williams, Jonathan Moore, Craig D. Steinback, Liam D. Corr, Zoe H. Adams, Fabio Giuseppe Laginestra, Markus Amann, Philip N. Ainslie, Travis D. Gibbons, Mike Stembridge   +13 more
wiley   +1 more source

End-Tidal Carbon Dioxide - A Guided Tool to Diagnose a Bronchial Tree Injury in Thoracoscopic Procedures. [PDF]

Ann Card Anaesth
Gourav KP, Moses A, Singh H, Sargunam C.
europepmc   +1 more source

Ventilatory and heart rate responses to hypoxia in pre‐ and post‐menopausal ethnically Tibetan women residing at ∼3800 m in Mustang, Nepal

The Journal of Physiology, EarlyView.
Abstract figure legend Tibetan women livingat high altitude exhibit distinct physiological traits that can enhance oxygen transport in chronic hypoxia. Menopausal status influences cardiopulmonary responses to hypoxia in women living at low altitudes.
E. A. Moya, J. J. Yu, S. R. Craig, A. Di Rienzo, D. Witonsky, W. Gu, B. Basnyat, K. P. Strohl, F. L. Powell, T. S. Simonson, C. M. Beall   +10 more
wiley   +1 more source

A comparative study of targeted end-tidal carbon dioxide versus standard management to guide resuscitation in emergency department cardiac arrest in Thailand: study protocol for a three-arm randomised controlled trial. [PDF]

Trials
Srivilaithon W, Limjindaporn C, Kornthatchapong K, Imsuwan I, Daorattanachai K, Diskumpon N, Dasanadeba I, Siripakarn Y, Ueamsaranworakul T, Pornpanit C, Chatchairatanavej N, Tivirach P.   +11 more
europepmc   +1 more source

The role of group III/IV afferent feedback in the ventilatory, pressor and metabolic responses to exercise in normoxia and hypoxia

The Journal of Physiology, EarlyView.
Abstract figure legend Participants completed cycling exercise with (placebo) and without (25 µg intrathecal fentanyl) intact group III/IV muscle afferent feedback in three settings: normoxia, acute hypoxia and chronic hypoxia after 7–9 days of acclimatisation (∼3800 m). Blocking afferent feedback suppressed exercise hyperpnoea across all environments,
Elliott J. Jenkins, Phuong L. Ha, Connor A. Howe, Jay M. J. R. Carr, Justin A. Monteleone, Andrew J. M. Douglas, Abigail Nicholson, Andrew Steele, Brydie Lemkes, Jodie L. Koep, L. Madden Brewster, Jennifer Duffy, Mathew I. B. Debenham, Tena Monaghan, Declan Isaak, Jacob McCormick, Brian H. Dalton, Chris J. McNeil, Jared Baylis, David MacLeod, Mike Stembridge, Markus Amann, Philip N. Ainslie, Travis D. Gibbons   +23 more
wiley   +1 more source

Diagnostic Accuracy of End-Tidal Carbon Dioxide for Assessing Diabetic Ketoacidosis: A Systematic Review and Meta-Analysis. [PDF]

Arch Acad Emerg Med
Hajipoor Kashgsaray N, Jamei K, Kabiri N.   +2 more
europepmc   +1 more source

Electrophysiological properties of the dorsal motor nucleus of the vagus motoneurones controlling airway mucus secretion in rats

The Journal of Physiology, EarlyView.
Abstract figure legend Acidosis depolarises parasympathetic respiratory motoneurones in the dorsal motor nucleus of the vagus (DMV) and increases their firing frequency by reducing TWIK‐2 channel conductance. Acidosis also activates astrocytes, which further enhance neuronal excitability through NMDA receptor‐dependent glutamatergic signalling.
Daniel P. de Souza, Renato W. Martins Sá, Luiza Henrique de Souza, Fernando S. Ramalho, Davi J. A. Moraes   +4 more
wiley   +1 more source

Design and Development of a Compact, Portable Nondispersive Infrared (NDIR)-Based Capnography Device for Real-Time End-Tidal Carbon Dioxide (CO₂) Monitoring. [PDF]

Cureus
Rrmoku D.
europepmc   +1 more source