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Superiority of OxyMaskTM with less carbon dioxide rebreathing in children
Shigetoshi Ogiwara1, Takuya Tamura2, Shuji Sai2
1Department of Pediatrics, Teine Keijinkai Hospital, 12-1-40 Maeda-ichijo Teine-ku, Sapporo, 006-8555, Japan. ogiwara-sh@keijinkai.or.jp.
Insights
OxyMask Kid demonstrated superior performance in healthy children, delivering higher oxygen levels and reducing carbon dioxide rebreathing compared to simple oxygen masks at low flow rates.
Area of Science:
- Pediatric respiratory care
- Medical device evaluation
- Physiological monitoring
Background:
- Limited physiological data exists for oxygen masks in children.
- Carbon dioxide (CO2) rebreathing is a concern with oxygen delivery devices.
- OxyMask's design aims to minimize CO2 rebreathing, but pediatric data is scarce.
Purpose of the Study:
- To compare the efficacy of OxyMask Kid versus a simple oxygen mask in healthy children.
- To evaluate physiological parameters including fraction of inspiratory oxygen (FIO2) and partial pressure of inspiratory carbon dioxide (PICO2).
- To assess the impact of low oxygen flow rates on respiratory parameters.
Main Methods:
- A comparative study involving ten healthy children (median age 5.4 years).
- Measurement of FIO2, PICO2, and end-tidal CO2 using a gas-sampling monitor.
- Testing both OxyMask and a simple oxygen mask at oxygen flow rates of 1, 3, 5, and 10 L/min.
Main Results:
- OxyMask achieved higher FIO2 levels than the simple mask at 3 L/min oxygen flow.
- OxyMask significantly reduced PICO2 compared to the simple mask (e.g., 1.5 mmHg vs. 3.7 mmHg at 1 L/min).
- Both masks showed increased PICO2 at low oxygen flow rates.
Conclusions:
- OxyMask provides higher FIO2 and less CO2 rebreathing in healthy children at low oxygen flow rates.
- The findings support OxyMask's potential as an effective oxygen delivery device for pediatric use.
- Further clinical investigation is warranted to confirm these physiological benefits in diverse pediatric populations.
Abstract:
Despite the growing importance of oxygen-delivery devices worldwide, there are only a few reports of physiological data on various oxygen masks in children. The possibility of carbon dioxide (CO2) rebreathing has been a prevalent concern with the use of oxygen-delivery devices. OxyMask KidTM (Southmedic Inc. Canada; hereafter OxyMask) is expected to reduce CO2 rebreathing even at low oxygen flow rates because of its structural features. Biological data using OxyMask in children have not been well investigated. Measured respiratory parameters of OxyMask with those of a simple oxygen mask in healthy children were compared. Ten subjects were enrolled, with a median age of 5.4 years. All subjects used both OxyMask and a simple oxygen mask. The fraction of inspiratory oxygen (FIO2), partial pressure of inspiratory CO2 (PICO2), and partial pressure of end-tidal CO2 were measured using a sidestream gas-sampling monitor in all subjects. The oxygen flow rate was set at 1, 3, 5, and 10 L/min. FIO2 levels were higher with OxyMask than those with the simple oxygen mask at 3 L/min of oxygen. PICO2 levels were significantly lower with OxyMask than those with the simple oxygen mask (1.5 mmHg vs. 3.7 mmHg at 1 L/min, P = 0.005; 1.0 mmHg vs. 2.7 mmHg at 3 L/min, P = 0.005, respectively), whereas PICO2 levels were higher at low oxygen flow rates with both masks.Conclusion: Our results showed that higher FIO2 and less CO2 rebreathing were achieved with OxyMask than those with a simple oxygen mask at low flow rates of oxygen in healthy children. What is Known: • OxyMask is expected to reduce carbon dioxide rebreathing even at low oxygen flow rates because of its structural features. • Efficacy has been demonstrated in experimental models and adult data, but clinical data on the use of the OxyMask in children are limited. What is New: • Higher fraction of inspiratory oxygen and lesser carbon dioxide rebreathing were achieved with OxyMask than with a simple oxygen mask at low flow rates of oxygen in healthy children.
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