Relationship of neonatal endotracheal tube size and airway resistance.


BACKGROUND Infants receiving mechanical ventilation require narrow-lumen, small-diameter endotracheal tubes. OBJECTIVE Compare the resistances of endotracheal tubes used in the neonatal intensive care unit. METHODS Endotracheal tubes of internal diameter 2.5, 3.0, 3.5, and 4.0 mm were tested with a standard neonatal ventilator and a test lung. An… (More)


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