The Science Journal of the American Association for Respiratory Care

2007 OPEN FORUM Abstracts

EVALAUATION OF A NOVEL DEVICE TO TITRATE PORTABLE OXYGEN SYSTEMS

R. W. McCoy1, T. Limberg1


Background: New oxygen therapy systems are available to ambulatory patients that provide features and benefits to improve mobility. Many of these systems operate differently from continuous flow by using oxygen conserving devices (OCD). It has been documented that the numbers on the control knob of conserving devices does not provide the same FiO2 as continuous flow or other conserving devices. It has been difficult to titrate patients on the system they will be using at home since the physician’s office or pulmonary rehabilitation facility may use a different portable oxygen system than the home care provider.

Method:
We evaluated a novel oxygen delivery system that was developed to investigate a new approach to portable oxygen delivery. The device includes a flow regulating box that is controlled by a lap top computer. Software allows for adjustment of pulse volume, breath hold off time, maximum percent of pulse delivery time and triggering sensitivity. Flow rate is automatically adjusted to deliver volume in the set time. The device monitors and records pulse volume, breath rate, I:E ratio, oxygen saturation. The device graphs and trends breath rate, I:E ratio, oxygen saturation, heart rate and pulse volume. The trending section allows for recording of comments as they occur.

Results:
The current system allows for testing and monitoring of oxygen delivery by continuous flow, intermittent flow emulating the Devilbiss/Sunrise Medical PD 1000 and an investigational device that will increase dose volume as respiratory rate increases (COPD Partners). Patient data indicated that the device was able to perform as specified and provide and trend patient parameters that allowed for the titration of a device to the patients needs with exercise.

Conclusion:
This new oxygen delivery and monitoring system provided valuable information for titrating an oxygen patients needs during exercise. Recorded trend data allowed for the review of the study and analysis plus hard copy to compare future oxygen titrations as needed. This product may have future application in objective and consistent testing of patients using portable oxygen for LTOT and be as valuable as other products used to test for respiratory impairment such as pulmonary function testing and sleep testing.

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