Results 111 to 120 of about 34,853 (259)

Estimation of end-expiratory lung volume variations by optoelectronic plethysmography.

, 2001
To test the capability of optoelectronic plethysmography (OEP) to monitor positive end-expiratory pressure (PEEP)-induced changes of end-expiratory lung volume (EELV) changes in mechanically ventilated paralyzed ...
E. Carlesso, R. L. Dellacà, ALIVERTI, ANDREA, P. Pelosi, A. Aliverti, PEDOTTI, ANTONIO, L. Gattinoni, D. Chiumello, A. Pedotti, DELLACA', RAFFAELE   +9 more
core   +1 more source

TMEM16A channel signalling microdomains in the regulation of vascular function

The Journal of Physiology, EarlyView.
Abstract figure legend Schematic representation of TMEM16A channel signalling microdomains. Calcium influx or calcium release from the endoplasmic/sarcoplasmic reticulum (ER/SR) activates TMEM16A channels through interactions with regulatory proteins in vascular smooth muscle cells or endothelial cells. TMEM16A channel activation drives chloride efflux,
Fênix Araujo, Swapnil K. Sonkusare
wiley   +1 more source

Evaluación de amplitud y frecuencia mediante el acondicionamiento del pulso pletismográfico y posterior extracción oximétrica – fase 2

Ciencia e Ingeniería, 2019
La señal pletismográfica permite cuantificar los cambios del volumen de sangre bajo parámetros de vasoconstricción y vasodilatación del diámetro venoso, para detectar posibles anomalías relacionadas con patologías pulmonares y sanguíneas. Por lo anterior,
N. Olarte López, J. Sánchez Ramírez, C. Orrego Muñoz, G. Echeverry Vásquez   +3 more
doaj  

Breathing irregularities and postnatal hypoxaemia in an experimental model of essential hypertension

The Journal of Physiology, EarlyView.
Abstract figure legend Neonatal spontaneously hypertensive rats (SHRs) exhibit inherent respiratory dysfunction in early life, including oscillatory breathing patterns and apnoeic events that cause oxygen desaturation and brain hypoxia, in addition to an impaired hypoxic ventilatory response.
Beatriz N. Vieira, Letícia R. Mendes, Sarah G. Mariano, Isabela P. Leirão, Emilson D. Pereira‐Junior, Milede H. Saraiva Paes, Pedro L. Katayama, Daniel B. Zoccal   +7 more
wiley   +1 more source

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

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

Using plethysmography to determine erythropoietin's impact on neural control of ventilation

, 2013
The evaluation of respiratory parameters often requires the use of anesthetics (that depress the neural -network controlling respiration), and/or ways to restrain the animal's mobility (that produces a stress-dependent increase of respiration ...
Jorge Soliz, Soliz, Jorge, Soliz, J, Gassmann, Max, Tommy Seaborn, Seaborn, Tommy, Max Gassmann, Seaborn, T, Gassmann, M   +8 more
core   +1 more source

Lymphatic Abnormalities in Noonan Syndrome Extend Beyond Clinically Apparent Disease

American Journal of Medical Genetics Part A, Volume 200, Issue 10, Page 2211-2223, October 2026.
ABSTRACT Lymphatic disease represents a well‐described manifestation of Noonan syndrome (NS), yet the full phenotypic spectrum remains incompletely characterized, especially in asymptomatic individuals. We conducted a cross‐sectional study including 10 individuals with NS (four with peripheral lymphedema and six without) and 10 age‐ and sex‐matched ...
Inger Norlyk Sheyanth, Benjamin Kelly, Sheyanth Mohanakumar, Steffen Ringgaard, Yoav Dori, Irene Kibæk Nielsen, Uffe Birk Jensen, Vibeke Elisabeth Hjortdal   +7 more
wiley   +1 more source

A Novel Technique for the Measurement of Chest Wall Kinematics Using Low Cost Stretch Sensors

Sukkur IBA Journal of Emerging Technologies
Measurement of breathing patterns and thoracoabdominal movement (chest wall kinematics) is essential in studying patients with chronic obstructive pulmonary diseases (COPD), patients with neuromuscular diseases, critical patients in intensive care units
Atiqa Saleem, Zainab Ali, Rida Nisar, Muhammad Usman Raja   +3 more
doaj   +1 more source

Change in pulse wave transit time measured using ear plethysmography is a useful substitute for finger plethysmography

PURPOSE: Plethysmography using the finger is affected by various clinical conditions, including sympathetic tone. This study aimed to evaluate whether pulse wave transit time (PWTT) calculated using ear plethysmography could be used as a substitute for ...
Higashi, Midoriko, Ozasa, Shoko, Fujiyoshi, Tetsuhiro, Shirozu, Kazuhiro, Yamaura, Ken, Sumie, Makoto, Nakano, Ryota   +6 more
core   +1 more source