Results 251 to 260 of about 27,214 (278)

Relationship between inspiratory drive and perceived inspiratory effort in normal man

Clinical Science, 1990
1. To examine the relationship between the inspiratory effort sensation (IES) and respiratory drive as reflected by mouth occlusion pressure (P0.1) we have studied loaded and unloaded ventilatory responses to CO2 in 12 normal subjects. 2.
J E, Clague, J, Carter, M G, Pearson, P M, Calverley   +3 more
openaire   +2 more sources

Expiratory versus inspiratory efforts in suffocating pigeons

Agents and Actions, 1972
The respiration of anaesthetized pigeons, suffocated to death by tracheal occlusion, is followed by means of the intratracheal pressure tracing. A special procedure allows to distinguish expiratory from inspiratory efforts.
K, Bucher, B, Huber, P, Baettig
openaire   +2 more sources

Relationship between inspiratory effort and breathlessness in pregnancy

Journal of Applied Physiology, 1991
Using open-magnitude scaling, we compared the relationships between breathlessness, inspiratory esophageal pressure swing (delta Pes), and ventilation in pregnancy and postpartum. Thirteen healthy women performed progressive cycle exercise tests at 33 +/- 2 wk gestation and 12 +/- 3 wk postpartum.
S K, Field, S G, Bell, D F, Cenaiko, W A, Whitelaw   +3 more
openaire   +2 more sources

The Effect of Inspiratory Effort on Circuit Compensation for Volume-Targeted Modes

Respiratory Care, 2022
BACKGROUND: Critical-care ventilators provide patient circuit compensation (CC) to counteract the loss of volume due to patient circuit compliance. No studies show the effect of inspiratory efforts (indicating maximal value of the muscle pressure waveforms [P max
Ping-Hui, Liu, Robert L, Chatburn
openaire   +2 more sources

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
openaire   +2 more sources

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
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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 P, Slutsky AS   +6 more
openaire   +3 more sources