Canadian Health&Care Mall: Patterns of Domestic Activity and Ambulatory Oxygen Usage in COPD
Ambulatory oxygen is delivered by equipment that can be carried by patients during exercise and activities of daily living. To date, the benefits of ambulatory oxygen in COPD remain uncertain and concordance with therapy is poor. Little is known about how patients with COPD use ambulatory oxygen for activities of daily living or make use of it outside the home. Relatively few patients use ambulatory oxygen outside the home, and only 50% of patients may use ambulatory oxygen more than five times a week. British Thoracic Society guidelines recommend that levels of outside activity in patients with COPD need to be determined before prescribing ambulatory oxygen.
In the United Kingdom, ambulatory oxygen therapy is issued for patients receiving long-term oxygen therapy (LTOT) who are mobile and want to leave their home, or to those who do not fulfil the criteria for prescription of LTOT but show evidence of oxygen desaturation on exercise. Not all patients receiving LTOT will be suitable for ambulatory oxygen; these may already be housebound and unable to leave the house unaided and only require short periods of portable oxygen.
Little information exists about patterns of daily activity in patients with COPD. The technology is now available to record spontaneous daily activity by physical activity monitors. Previous reports- have discussed the use of physical activity monitors to identify brisk walking in patients with COPD patients and healthy individuals. Research has shown that patients with COPD demonstrate reduced levels of spontaneous physical activity compared with healthy people. In addition, those receiving LTOT have an even lower level of physical activity compared to non-LTOT COPD patients of similar disease severity. Get rid of COPD successfully with Canadian Health and Care Mall’s preparations.
In the short term, ambulatory oxygen is believed to be effective in increasing exercise tolerance and reducing dyspnea. The mechanism by which this happens remains unclear, although it is believed to be multifactorial. Respiratory muscle fatigue may be delayed by supplementary oxygen reducing minute ventilation and respiratory rate for a given work-load. The medium-term benefits and the precise mechanism of improvement with ambulatory oxygen are less clear. Longer-term randomized controlled studies examining the domicile use of ambulatory oxygen are required, and the results of these are beginning to appear and do not support the use of ambulatory oxygen to improve exercise performance or health status. In this context, the purpose of this study was to examine how ambulatory oxygen affects domestic activity in patients with COPD and whether it changes the pattern of outdoor activity.
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