Nasal injury and comfort with jet versus bubble continuous positive airway pressure delivery systems in preterm infants with respiratory distress

Abstract

Nasal injuries with use of nasal continuous positive airway pressure (CPAP) range from blanching of nasal tip to septal necrosis and septal drop. This analysis was done in preterm neonates of < 34-week gestation, who received nasal CPAP as primary support as part of a randomized trial comparing Jet device with Bubble device for delivery of CPAP, both through nasal prongs of different structure, make and fixation methods. Nasal injury was assessed using a validated nasal injury score. Out of 170 neonates enrolled, 103 (61%) had nasal injuries; moderate and severe injuries were observed in 18 (11%) and 8 (5%) infants, respectively. Septum was the most common site injured. The incidence and severity of nasal injury were significantly lesser in Jet group compared to Bubble group [RR 0.6 (95% C.I. 0.5-0.8); p < 0.001]. Similarly, neonates in Jet group had lesser average [median (IQR): 3 (3,4) vs. 4 [8, 14]; p = 0.04] as well as peak N-PASS pain scores [median (IQR): 4 [8, 14] vs. 5 [13, 16]; p = 0.01] in comparison to Bubble group. However, Jet group neonates had significantly more common prong displacements.

Conclusion: Bubble CPAP device with its nasal interface had higher and more serious incidence of nasal injuries in comparison to Jet CPAP device. What is known: • Nasal injuries are becoming increasingly common with use of nasal CPAP low gestational age, low birth weight, longer use of CPAP and longer NICU stay are risk factors for such injuries • Validated nasal injury scores have been created for assessment of nasal trauma in neonates What is new: • Bubble device with its interface had higher and more serious incidence of nasal injuries in comparison to Jet device • Even though pain assessed by N-PASS was less with Jet device, prong displacements were more frequent with its system.

Keywords: Bubble CPAP; Jet CPAP; Nasal injury; Pain; Preterm.