RT Journal
A1 Ryan C, Finer NN, Peters KL
T1 NAsal intermittent positive-pressure ventilation offers no advantages over nasal continuous positive airway pressure in apnea of prematurity
JF American Journal of Diseases of Children
JO American Journal of Diseases of Children
YR 1989
FD October 1
VO 143
IS 10
SP 1196
OP 1198
DO 10.1001/archpedi.1989.02150220094026
UL http://dx.doi.org/10.1001/archpedi.1989.02150220094026
AB • A prospective, randomized, crossover trial was performed to compare the efficacy of nasal intermittent positive-pressure ventilation with nasal continuous positive airway pressure in infants of less than 32 weeks of gestation. Continuous positive airway pressure was delivered at end-expiratory pressures of 4 cm H2O, while peak pressures of 20 cm H2O and end-expiratory pressures of 4 cm H2O were used during nasal intermittent positive-pressure ventilation at ventilatory rates of 20 breaths per minute. The frequency and extent of apnea and bradycardia during a 6-hour period in a patient receiving nasal continuous positive airway pressure were compared with a similar crossover period of nasal intermittent positive-pressure ventilation. Although the infants had slightly less frequent episodes of apnea per hour (0.6 ±0.7 vs 0.5 ±0.7) and bradycardia per hour (1.2 ±1.3 vs 0.9 ±1.0) during nasal intermittent positive-pressure ventilation, these differences were not significant. There were no significant differences in the severity of these events as assessed by the duration and fall in transcutaneous oxygen pressure during apnea and heart rate during bradycardia. There were no significant changes in blood gases throughout the study. Nasal intermittent positive-pressure ventilation appears to have no advantages over nasal continuous positive airway pressure in preventing apnea and does not alter gas exchange in infants of less than 32 weeks of gestation.(AJDC. 1989;143:1196-1198)