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How often should you change batteries in carbon monoxide detector? 

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Carbon monoxide concentration from residential and commercial areas, are moderate and considered safe for those in the area.
The primary outcome measures are carbon monoxide validated 7-day point prevalence abstinence at six and 12 months. DiscussionThis is the first large scale study to develop and test a pharmacist-led system change intervention program initiated during patient hospitalisation.
These interventions reduced patient exposure to carbon monoxide.
Increased public education, especially for minorities and lower income populations, is necessary regarding the use of carbon monoxide detectors for poisoning prevention.
The opportunities for investigating the effects of long-continued exposure to low concentrations of carbon monoxide are unusaually favorable in
The results of this work may be applicable to further development of carbon monoxide sensors for fire detection at its earlier stages.
Monitoring for carbon monoxide exposures during general anesthesia may be necessary to recognize and end patient exposures that occur despite preventative measures.
These observations strongly suggest that the frequency of thoracic complaints in an emergency room can be affected by the ambient level of carbon monoxide.
The authors conclude that fixed outdoor CO monitors are not, in general, providing useful estimates of carbon monoxide exposures of urban residents.

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