Summary: For a patient with an acute exacerbation of chronic obstructive pulmonary disease (AECOPD) and an initial pulse-oximetry reading of > 80%, management guided by venous blood gas (if pH > 7.35) may be just as effective as management guided by arterial blood gas sampling but with less patient discomfort. (http://thorax.bmj.com/content/71/3/210/F5.large.jpg)

http://www.ncbi.nlm.nih.gov/m/pubmed/26628461/

Strength of Recommendation = B

 

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