ISSN:
1365-2044
Source:
Blackwell Publishing Journal Backfiles 1879-2005
Topics:
Medicine
Notes:
This study was designed to compare the cardiorespiratory effects of high frequency jet ventilation at 150 breaths/minute with and without added positive end expiratory pressure, with conventional intermittent positive pressure ventilation in 20 patients following aortocoronary bypass graft surgery. On comparison with intermittent positive pressure ventilation, there was a decrease in peak airway pressure during high frequency jet ventilation when positive end expiratory pressure of 0 or 0.5 k Pa was applied, but not with 1 k Pa. and an increase in mean airway pressure with positive end expiratory pressures of 0.5 and 1 k Pa. On changing from intermittent positive pressure to high frequency jet ventilation with no added end expiratory pressure, there was an acute decrease in arterial oxygen tension and increases in cardiac output and total tissue oxygen delivery. On changing from intermittent positive pressure ventilation to high frequency jet ventilation with I k Pa of positive end expiratory pressure, there was an acute decrease in arterial oxygen tension, cardiac output and oxygen delivery, and increases in pulmonary arterial, right atrial and pulmonary capillary wedge pressures. The addition of positive end expiratory pressure did not prevent the acute decrease in arterial oxygen tension which occurred on transfer to high frequency jet ventilation.
Type of Medium:
Electronic Resource
URL:
http://dx.doi.org/10.1111/j.1365-2044.1987.tb04105.x
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