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Comparison of two different CPAP systems by tidal breathing parameters
Thomas Hückstädt1, Bertram Foitzik, Roland R Wauer
1Clinic of Neonatology CCM, Humboldt-University, Medical School (Charité), Schumannstrasse 20/21, 10098, Berlin, Germany.
Intensive Care Medicine
|May 30, 2003
Summary
The valveless Infant Flow System improves airflow and tidal volume in preterm infants compared to the Babylog 8000. This continuous positive airway pressure (CPAP) device also shows reduced pressure fluctuations during breathing cycles.
Area of Science:
- Neonatology
- Respiratory Support
- Pediatric Critical Care
Background:
- Preterm infants often require respiratory support after extubation.
- Continuous positive airway pressure (CPAP) is a common non-invasive ventilation method.
- Different CPAP systems may impact respiratory mechanics differently.
Purpose of the Study:
- To compare the Infant Flow System (valveless) with the Babylog 8000 (constant-flow) CPAP devices.
- To evaluate tidal breathing parameters and pressure fluctuations in preterm infants.
- To determine the impact of CPAP system design on respiratory support.
Main Methods:
- Randomized cross-over trial conducted in a Level III Neonatal Intensive Care Unit.
- Twenty preterm infants (median birth weight 1,035g, gestational age 27 weeks) were studied post-extubation.
- Tidal breathing parameters and pressure fluctuations were measured using a flow-through technique for both CPAP systems.
Main Results:
- The Infant Flow System significantly increased inspiratory flow (1.5 vs 1.3 L/min/kg) and tidal volume (5.3 vs 4.7 ml/kg) compared to the Babylog 8000.
- Pressure fluctuations during the breathing cycle were significantly lower with the Infant Flow System (0.1 vs 0.15 kPa).
- Expiratory pressures remained stable with the Infant Flow System, unlike the Babylog 8000.
Conclusions:
- The choice of CPAP system significantly influences tidal breathing parameters in preterm infants.
- The valveless Infant Flow System enhances airflow and tidal volume.
- The Infant Flow System provides CPAP with reduced pressure fluctuations, potentially improving respiratory support.