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Prototype volume-controlled resuscitator for neonates and infants.
N Kissoon1, T Frewen, N Tiffin
1Department of Pediatrics, Children's Hospital of Western Ontario, London, Canada.
Critical Care Medicine
|December 1, 1990
Summary
A new volume-controlled resuscitator (VCR) provided better ventilation for infants in the ICU compared to a standard self-inflating resuscitator (SIR). The VCR resulted in fewer cases of abnormal carbon dioxide levels and less pressure variability during assisted ventilation.
Area of Science:
- Neonatal critical care
- Pediatric respiratory support
- Medical device innovation
Background:
- Infants requiring assisted ventilation in the ICU often face challenges with ventilation efficacy and safety.
- Standard self-inflating resuscitators (SIR) may lead to inconsistent ventilation and pressure variations.
- Optimizing ventilation strategies is crucial for improving outcomes in critically ill neonates.
Purpose of the Study:
- To compare the efficacy and safety of a new prototype volume-controlled resuscitator (VCR) against a standard self-inflating resuscitator (SIR) in infants receiving assisted ventilation.
- To evaluate key respiratory and hemodynamic parameters during ventilation with both devices.
- To assess the impact of each resuscitator on achieving normocarbia and minimizing pressure fluctuations.
Main Methods:
- A randomized controlled trial involving 25 infants in an ICU receiving assisted ventilation.
- Manual ventilation for 5-minute periods using either the VCR or SIR.
- Monitoring of heart rate, respiratory rate, mean arterial pressure, mean airway pressure (Paw), end-tidal CO2 (PetCO2), oxygen saturation, PaO2, and PaCO2.
- Measurement of peak inspiratory pressure (Pmax) and minimum inspiratory pressure (Pmin) in a subset of patients.
Main Results:
- Ventilation with the VCR led to significantly lower end-tidal CO2 (PetCO2) and PaCO2, and higher pH compared to the SIR.
- A higher percentage of infants ventilated with the VCR achieved normal PaCO2 levels (84%) versus the SIR (44%).
- The VCR demonstrated significantly less variability in peak inspiratory pressure (Pmax) compared to the SIR, indicating more controlled pressure delivery.
Conclusions:
- The new volume-controlled resuscitator (VCR) offers improved ventilation control in infants compared to the standard self-inflating resuscitator (SIR).
- The VCR facilitates better achievement of normocarbia and reduces the risk of hyperventilation and excessive pressure variations.
- Further research in neonates is warranted to confirm these findings and explore long-term benefits.