Spontaneous breathing during high-frequency oscillatory ventilation improves regional lung characteristics in experimental lung injury

2010 ◽  
Vol 54 (10) ◽  
pp. 1248-1256 ◽  
Author(s):  
M. VAN HEERDE ◽  
K. ROUBIK ◽  
V. KOPELENT ◽  
M. C. J. KNEYBER ◽  
D. G. MARKHORST
Keyword(s):  
Lung Injury ◽  
High Frequency ◽  
Spontaneous Breathing ◽  
High Frequency Oscillatory Ventilation ◽  
Oscillatory Ventilation ◽  
Regional Lung ◽  
High Frequency Oscillatory

Cardiovascular responses to high-frequency oscillatory ventilation during acute lung injury in sheep

2007 ◽  
Vol 21 (3) ◽  
pp. 340-347 ◽  
Author(s):  
Rikimaru Nakagawa ◽  
Tomonobu Koizumi ◽  
Koichi Ono ◽  
Kenji Tsushima ◽  
Sumiko Yoshikawa ◽  
...  
Keyword(s):  
Acute Lung Injury ◽  
Lung Injury ◽  
High Frequency ◽  
Cardiovascular Responses ◽  
High Frequency Oscillatory Ventilation ◽  
Oscillatory Ventilation ◽  
High Frequency Oscillatory

Demand flow facilitates spontaneous breathing during high-frequency oscillatory ventilation in a pig model

2009 ◽  
Vol 37 (3) ◽  
pp. 1068-1073 ◽  
Author(s):  
Marc van Heerde ◽  
Karel Roubik ◽  
Vit Kopelent ◽  
Frans B. Plötz ◽  
Dick G. Markhorst
Keyword(s):  
High Frequency ◽  
Spontaneous Breathing ◽  
High Frequency Oscillatory Ventilation ◽  
Pig Model ◽  
Oscillatory Ventilation ◽  
High Frequency Oscillatory

Responses of pulmonary vagal mechanoreceptors to high-frequency oscillatory ventilation

1988 ◽  
Vol 65 (2) ◽  
pp. 633-639 ◽  
Author(s):  
J. A. Wozniak ◽  
P. W. Davenport ◽  
P. C. Kosch
Keyword(s):  
High Frequency ◽  
Spontaneous Breathing ◽  
High Frequency Oscillatory Ventilation ◽  
Oscillatory Ventilation ◽  
Stretch Receptors ◽  
Pulmonary Stretch Receptors ◽  
Residual Capacity ◽  
Anesthetized Dogs ◽  
Increased Activity ◽  
High Frequency Oscillatory

The discharge of 57 slowly adapting pulmonary stretch receptors (PSR's) and 16 rapidly adapting receptors (RAR's) was recorded from thin vagal filaments in anesthetized dogs. The receptors were localized and separated into three groups: extrathoracic tracheal, intrathoracic tracheal, and intrapulmonary receptors. The influence of high-frequency oscillatory ventilation (HFO) at 29 Hz on receptor discharge was analyzed by separating the response to the associated shift in functional residual capacity (FRC) from the oscillatory component of the response. PSR activity during HFO was increased from spontaneous breathing (49%) and from the static FRC shift (25%). PSR activity during the static inflation was increased 19% over spontaneous breathing. RAR activity was also increased with HFO. These results demonstrate that 1) the increased activity of PSR and RAR during HFO is due primarily to the oscillating action of the ventilator and secondarily to the shift in FRC associated with HFO, 2) the increased PSR activity during HFO may account for the observed apneic response, and 3) PSR response generally decreases with increasing distance from the tracheal opening.

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