The investigators will place a monitoring patch that continuously records electrocardiogram and activity. Participants will switch this patch every 7 days for a total of 28 days. From these data the investigators will observe how heart rate variability and heart rate responses to exercise evolve after hospitalization for an exacerbation of COPD.
The purpose of this study is to observe the variation in time between heart beats and how heart rate changes during activity evolve after hospitalization for an exacerbation of COPD.