Effect of maturity and infection on the rate of relaxation of the respiratory muscles in ventilated, newborn infants.

AIM To assess the respiratory muscle time constant of relaxation (τ), an index of respiratory muscle function in ventilated newborns. METHODS Sixty-two infants (42 born prematurely) with a median gestational age of 29 [interquartile range (IQR) 26-37] weeks were prospectively studied. Measurement of τ was taken during spontaneous breathing on endotracheal… (More)