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Peripheral airway pressure during high frequency ventilation
Author(s) -
ELIASEN K.,
MOGENSEN T.,
ANDERSEN J. B.
Publication year - 1986
Publication title -
acta anaesthesiologica scandinavica
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.738
H-Index - 107
eISSN - 1399-6576
pISSN - 0001-5172
DOI - 10.1111/j.1399-6576.1986.tb02375.x
Subject(s) - medicine , mean airway pressure , tidal volume , ventilation (architecture) , peripheral , anesthesia , airway , peak inspiratory pressure , high frequency ventilation , respiratory minute volume , artificial ventilation , volume (thermodynamics) , mechanical ventilation , respiratory system , cardiology , lung , respiratory disease , mechanical engineering , physics , quantum mechanics , engineering
Peripheral airway pressure (P p ) was measured during high frequency ventilation (HFV) (open system) (1–20 Hz) by retrograde catheters in eight excised dog lungs. Central airway pressure (P c ) and pleural pressure (P pl ) were measured simultaneously. We found a significant increase in peripheral end‐expiratory pressure at frequencies 5 Hz and higher, when the minute ventilation was increased. Mean P c and mean P p remained unchanged during ventilation at different frequencies with constant minute ventilation, although tidal volume decreased. With increasing tidal volume P c , P p , and P pl (mean) increased at all frequencies. The increase in end‐expiratory pressure indicates an “auto‐PEEP” effect, which may contribute to the better gas exchange described during HFV.