Comparison of the Heated Humidified High-flow Nasal Cannula with Nasal Continuous Positive Airway Pressure as Primary Respiratory Support for Preterm Neonates: A Prospective Observational Study

Document Type: Original Article

Authors

1 Department of Respiratory Therapy, School of Allied Health Science, Manipal Academy of Higher Education, Manipal, Karnataka, India

2 Hamad Medical Corporation, Qatar

3 Department of Pediatrics, Kasturba Medical College, Manipal Academy of Higher Education, Manipal, Karnataka, India

Abstract

Background: Heated humidified high-flow nasal cannula (HHHFNC) is gaining popularity in the management of respiratory distress in preterm neonates. However, it is not known whether it takes precedence over the gold standard nasal continuous positive airway pressure (NCPAP) in this age group as a primary mode of non-invasive ventilation (NIV). There is limited evidence addressing this issue in the literature. Therefore, this study aimed to focus on the effect of HHHFNC on preterm neonates with respiratory distress, compared to NCPAP as a primary mode of respiratory support.
Methods: A prospective observational study conducted in tertiary level III NICU. The preterm neonates 28-36 weeks with respiratory distress syndrome (onset of distress within ≤4 hours of life with FiO2 ≥0.25 with compatible chest radiograph) were managed with either HHHFNC or nCPAP The need for invasive ventilation within 72 hours of initiation of non-invasive respiratory support was studied. FiO2 and Downe’s scores were recorded every 4th hour for the first 48 hours.
Results: In total, 84 neonates were enrolled in this study. Treatment failure for HHHFNC group was 34.4%, whereas it was 32.2% (P=0.34) for NCPAP group which indicated no significant differences. In the late preterm strata, NCPAP group obtained longer duration for NIV (Median: 64 vs 43 hours, respectively; P<0.001); however, there were no differences between the study groups regarding the use of supplemental oxygen. The estimation of the survival time was plotted using the Kaplan-Meier curve (P<0.001). In addition, the two groups were compared through Gehan–Breslow–Wilcoxon test. Moreover, the results revealed differences between the two groups in terms of the hazards ratio for time to success regarding such items as the intervention group, gestational age, birth weight, surfactant therapy, and Downe’s score (1.17; CI: 95% [0.7, 1.8]).
Conclusion: Early HHHFNC obtained similar results, compared to NCPAP as a primary mode of NIV for a preterm population with respiratory distress, and it may not be superior to NCPAP.

Keywords


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