Effect of three different modes of non-invasive positive pressure ventilation on cardiac indices of premature infant with respiratory distress syndrome: a randomized control study / 中国新生儿科杂志

ABSTRACT

Objective To study the effect of three different modes of non-invasive positive pressure ventilation on cardiac indices of premature infants with respiratory distress syndrome (RDS).Method From January 2014 to October 2015,preterm infants who had RDS received intubation-pulmonary surfactantextubation in the neonatal intensive care unit of the Hospital were randomly assigned (by random number table) to three groups based on the primary mode of ventilationnasal continuous positive airway pressure (NCPAP),bi-level positive airway pressure (BiPAP),and synchronized bi-level positive airway pressure (SBiPAP).The mean airway pressure (MAP) were about 6 cmH2O in the three groups.The level of plasma B-type natriuretic peptide (BNP),cardiac troponin Ⅰ (cTnI),and correct QT intervals dispersion (QTcd) were monitored before and 42-54 h after non-invasive ventilation.Result There were 173 cases in our study,59 of which in NCPAP group,56 in BiPAP group,and 58 in SBiPAP group.The plasma BNP level at 42-54 h after non-invasive ventilation in the three groups were all higher than that before non-invasive ventilation [NCPAP group(247.9 ± 137.9) ng/L vs.(182.5 ± 1 10.7) ng/L,P =0.007;BiPAP group(258.5 ± 131.2) ng/L vs.(182.6 ± 105.0) ng/L,P ＜ 0.001;and SBiPAP group(260.9 ± 159.7) ng/L vs.(177.5 ± 101.5) ng/L,P =0.002].After 42-54 h non-invasive ventilation,there were no significant changes of plasma cTnI level and QTcd in all the three groups (all P ＞ 0.05).The level of plasma BNP,cTnI,and QTcd among the three groups before and after 42-54 h non-invasive ventilation all showed no significant differences statistically (all P ＞ 0.05).Conclusion Longer duration (42-54 h) of non-invasive positive pressure ventilation (MAP6 cmH2O) in preterm infants with RDS may lead to increased plasma BNP level,and may affect their cardiac function.However,it may not lead to serious myocardial damage and abnormality of ventricular repolarization.There were no significant differences in cardiac indices of premature infant with RDS among NCPAP,BiPAP,and SBiPAP group with the same MAP.