Comparison of two different CPAP systems by tidal breathing parameters

摘要: Comparison of tidal breathing and pressure fluctuation the continuous positive airway (CPAP) associated with use valveless Infant Flow System versus conventional constant-flow CPAP (Babylog 8000) in preterm infants. Randomized cross-over trial. Neonatal intensive care unit level III. Twenty infants; median (range): birth weight 1,035 g (640–4,110 g), actual 1,165 g (820–4,250 g), gestational age at 27 (26–40) weeks. After extubation two devices (Infant vs Babylog were applied a random order to same infant. Fluctuations during cycle parameters measured by flow-through technique. Using mean (standard deviation) inspiratory flow [1.5 (0.1) 1.3 l·min-1·kg-1, P<0.05] volume significantly increased [5.3 (1.3) 4.7 (1.3) ml/kg-1, compared 8000. The fluctuations lower [0.1 (0.03) kPa 0.15 (0.08) kPa, No differences seen duration inspiration expiration time peak flow. In pressures remained stable whereas they Within-subject comparisons 8000 show: (1) significant influence system used; (2) that increases air less cycle.