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		,  15:57, 3 October 2022
	
 
==Exacerbation==
* increase in sputum volume, purulence, and dyspnea
* severe: all 3 present
* moderate: 2/3
* mild: 1 of the above, plus another finding such as URI, fever, cough, wheezing
* treatment depends on severity. 
==Treatment==
* O2 goal 88-92%, because they are dependent on hypoxia for respiratory drive, since they are chronically hypercapnic.