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Performance of respirators at fast rates commonly used in neonatal intensive care units
Author(s) -
Greenough Anne,
Greenall F.
Publication year - 1987
Publication title -
pediatric pulmonology
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.866
H-Index - 106
eISSN - 1099-0496
pISSN - 8755-6863
DOI - 10.1002/ppul.1950030512
Subject(s) - medicine , respirator , tidal volume , airway , anesthesia , respiratory rate , intensive care , mechanical ventilator , peak inspiratory pressure , positive end expiratory pressure , intensive care medicine , respiratory system , heart rate , mechanical ventilation , blood pressure , materials science , composite material
Abstract The effect on tidal volume and airway pressure of increasing ventilator rate (30, 60, and 120/min) was tested in six commonly used neonatal ventilators. In all six ventilators increased flow was necessary to maintain mean airway pressure at the higher rates. Tidal volume decreased at rates of both 60 and 120/min in all six ventilators, associated with a change in pressure waveform. The most marked reduction in tidal volume, however, was associated with increased positive end‐expiratory pressure (PEEP). This was only demonstrated in four ventilators, all incorporating nonassisted expiratory valves. These results stress the necessity for appropriately designed ventilators if fast rates are to be used routinely in clinical practice. Pediatr Pulmonol 1987; 3:357–361 .