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A new pendant oxygen-conserving cannula which allows pursed lips breathing
1Pulmonary Rehabilitation, Casa Colina Center for Rehabilitation, Pomona, CA.
Chest
|April 1, 1989
Summary
An innovative oxygen delivery device, the airway pressure (AP) conserver, improves oxygen saturation (SaO2) in COPD patients. It enhances oxygen savings during pursed-lip breathing (PLB) compared to nasal-only breathing.
Area of Science:
- Pulmonary Medicine
- Biomedical Engineering
- Respiratory Therapy
Background:
- Oxygen therapy is crucial for hypoxemic patients with chronic lung disease.
- Steady flow (SF) oxygen delivery is inefficient and costly.
- Existing oxygen-conserving devices like the Oxymizer pendant have limitations, requiring specific breathing patterns.
Purpose of the Study:
- To evaluate a novel airway pressure (AP) oxygen conserving device.
- To assess the AP device's efficacy in improving oxygen saturation (SaO2) during different breathing techniques in COPD patients.
- To compare the AP device's performance against steady flow (SF) oxygen delivery.
Main Methods:
- Nine patients with Chronic Obstructive Pulmonary Disease (COPD) participated.
- SaO2 was measured using SF and the AP device.
- Measurements were taken during nasal-only breathing and pursed-lip breathing (PLB).
Main Results:
- The AP device maintained increased SaO2 compared to SF during nasal-only breathing.
- A further significant increase in SaO2 was observed with the AP device during PLB.
- The AP device demonstrated greater oxygen-saving benefits during PLB than with nasal-only breathing.
Conclusions:
- The AP device functions as an effective oxygen conserver during pursed-lip breathing.
- Combining the AP device with PLB maximizes oxygen-saving benefits in COPD patients.
- This technology offers improved efficiency for oxygen therapy in chronic lung disease.