Time Course of Oximetry and Oximetry-PEF Scores At Exacerbation. Time course of Oximetry and Oximetry-PEF scores from seven days prior (-7) to exacerbation onset (day 0, vertical line) and seven days into exacerbation of COPD. Values are the mean score of 13 exacerbations in 13 patients (see text for details).
Hurst et al. BMC Pulmonary Medicine 2010 10:52 doi:10.1186/1471-2466-10-52