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Nasal-airway pressure release ventilation (NASAL-APRV) and nasal-continuous positive airway pressure (NASAL-CPAP): hemodynamic, respiratory and gasometric effects
Critical Care volume 1, Article number: P063 (1997)
This study compared the NASAL-CPAP to a new mode called NASAL-APRV as a non-invasive weaning procedure from mechanical ventilation using nasal prongs, analysing the hemodynamic, respiratory and gasometric effects.
Data were collected in a randomized and prospective protocol, applied to pediatric patients (minimum age, 10 days; maximum age, 10 years 6 months; mean age, 1 year 8 months 12 days), totalling n = 17 cases. For each patient the mean airway pressure was kept constant for both modes of ventilation, 4.5 ± 0.65 cmH2O. In NASAL-APRV the maximum distension pressure ranged from 5 to 8 cmH2O and the release pressure was always to 0 cmH2O; release time was 1.0s and release frequency of 15 rpm. NASAL-CPAP was kept between 3 to 5 cmH2O. FiO2 was 40%. Statistical analysis: Wilcoxon signed-rank test.
In the hemodynamic effects there was a significant alteration only in heart rate, lowering in the NASAL-APRV. In the respiratory and gasometric changes there is a significant alteration towards improval both in oxygenation and ventilation, achieved with a better respiratory comfort.
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Fascina, L., Kopelman, B., Bonassa, J. et al. Nasal-airway pressure release ventilation (NASAL-APRV) and nasal-continuous positive airway pressure (NASAL-CPAP): hemodynamic, respiratory and gasometric effects. Crit Care 1 (Suppl 1), P063 (1997). https://doi.org/10.1186/cc62
- Mechanical Ventilation
- Pediatric Patient
- Airway Pressure
- Significant Alteration
- Pressure Release