Results 211 to 220 of about 15,376 (236)

Maximal activation of the human diaphragm but not inspiratory intercostal muscles during static inspiratory efforts

Neuroscience Letters, 1988
It is widely held that transdiaphragmatic pressure is a reliable index of the extent of central activation of the diaphragm but the maximal voluntary transdiaphragmatic pressure is lower during inspiratory than expulsive efforts. To determine whether the diaphragm is fully activated during the two manoeuvres supramaximal stimuli were delivered to both ...
D K, McKenzie, B L, Plassman, S C, Gandevia   +2 more
openaire   +2 more sources

Rib cage deformation during static inspiratory efforts

Journal of Applied Physiology, 1979
Patterns of rib cage (RC) deformation were studied in six normal subjects during moderate static inspiratory efforts such that esophageal pressure (Pes) as an index of transthoracic pressure fell to between -30 and -60 cmH2O during each maneuver. At lung volumes below 50% inspiratory capacity (IC), static inspiratory efforts deformed RC to a more ...
N A, Saunders, S M, Kreitzer, R H, Ingram   +2 more
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Effect of thoracoabdominal breathing patterns on inspiratory effort sensation

Journal of Applied Physiology, 1987
The respiratory sensations evoked by added inspiratory loads are currently thought to be largely mediated by the activity of the inspiratory muscles. Because of the differences in proprioceptors and in afferent and efferent innervations among the inspiratory muscles, we hypothesized that the sensation evoked by a given load would be different when the
J W, Fitting, D A, Chartrand, T D, Bradley, K J, Killian, A, Grassino   +4 more
openaire   +2 more sources

Estimation of Patient’s Inspiratory Effort From the Electrical Activity of the Diaphragm*

Critical Care Medicine, 2013
To calculate an index (termed Pmusc/Eadi index) relating the pressure generated by the respiratory muscles (Pmusc) to the electrical activity of the diaphragm (Eadi), during assisted mechanical ventilation and to assess if the Pmusc/Eadi index is affected by the type and level of ventilator assistance.
BELLANI, GIACOMO, MAURI, TOMMASO, COPPADORO, ANDREA, GRASSELLI, GIACOMO, PATRONITI, NICOLO' ANTONINO, Spadaro, S, SALA, VITTORIA LUDOVICA, FOTI, GIUSEPPE, PESENTI, ANTONIO MARIA   +8 more
openaire   +6 more sources

REDUCED INSPIRATORY EFFORT DURING INTERMITTENT MANDATORY VENTILATION WITH PEEP

Survey of Anesthesiology, 1976
The use of intermittent mandatory ventilation (IMV) and positive and expiratory pressure (PEEP) may demand the patient mount an inspiratory pressure equivalent to the pressure level of the PEEP for spontaneous breathing. During respiratory failure, ineffective inspiratory muscles may be unable to consistently meet such demands, especially if high ...
B B, Brach, F, Yin, R, Timms, K, Moser
openaire   +2 more sources

Inspiratory Muscle Unloading by Neurally Adjusted Ventilatory Assist During Maximal Inspiratory Efforts in Healthy Subjects

Chest, 2007
Neurally adjusted ventilatory assist (NAVA) is a mode of mechanical ventilation in which the ventilator is controlled by the electrical activity of the diaphragm (EAdi). During maximal inspirations, the pressure delivered can theoretically reach extreme levels that may cause harm to the lungs.
Sinderby C, Beck J, Spahija J, de Marchie M, Lacroix J, NAVALESI, PAOLO, Slutsky AS   +6 more
openaire   +4 more sources

[Dyspnea and inspiratory effort capacity in COPD].

Revue des maladies respiratoires, 1994
The aim of this work was to study the relationship between dynamic hyperinflation and dyspnoea perception on exercise in patients with chronic obstructive pulmonary disease (COPD). Seven men and three women with COPD (mean FEV1 45.9 +/- 9.8% predicted) were studied.
A, Noseda, J P, Carpiaux, J, Schmerber, J C, Yernault   +3 more
openaire   +1 more source

Increased inspiratory effort in infants with a history of apparent life-threatening event

Acta Paediatrica, 2002
The objective of this study was to compare the results of polysomnography between infants with a history of apparent life‐threatening event (ALTE) and controls. In this case‐control study, 40 full‐term ALTE infants, aged 2–36 wk at the time of the event, were compared with 40 age‐ and sex‐matched randomly selected controls.
E, Horemuzova, M, Katz-Salamon, J, Milerad   +2 more
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Effects of Spontaneous and Hypercapnic Hyperventilation on Inspiratory Effort Sensation in Normal Subjects

American Journal of Respiratory and Critical Care Medicine, 1998
Abstract In order to elucidate if the inspiratory effort sensation (IES) associated with carbon dioxide (CO2) is independent of the concomitant increase in the ventilation, we studied 23 normal resting volunteers (mean age 34 ± 11 yr) during CO2 rebreathing.
E L, De Vito, A J, Roncoroni, E E, Berizzo, F, Pessolano   +3 more
openaire   +2 more sources

Quantifying inspiratory effort: a future challenge for ICU nurses?

Intensive and Critical Care Nursing
Monitoring respiratory effort and implementing lung- and diaphragm-protective ventilation are evolving areas that represent a significant challenge for the ICU team. For nurses, this challenge involves developing advanced skills in mechanical ventilation monitoring to detect early signs of VIDD and P-SILI.
Bulleri, Enrico, Bambi, Stefano, Lucchini, Alberto   +2 more
openaire   +2 more sources