Figure 3.

Time Course of Symptoms and Oximetry Variables At Exacerbation. Time course of heart rate, oxygen saturation (SpO2) and peak-expiratory flow (PEF) from seven days prior (-7) to exacerbation onset (day 0, vertical line) and seven days into exacerbation of COPD. Data expressed as mean and 95%CI (in SD units) for each variable separately.

Hurst et al. BMC Pulmonary Medicine 2010 10:52   doi:10.1186/1471-2466-10-52
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