Pulmonary Disease, Chronic Obstructive Clinical Trial
— CHARM COPDOfficial title:
Changes in Heart Rate Variability And Heart Rate/Activity Slope Measures After Hospitalization for Acute Exacerbations of COPD: An Observational Study
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.
Status | Not yet recruiting |
Enrollment | 45 |
Est. completion date | April 1, 2024 |
Est. primary completion date | January 1, 2024 |
Accepts healthy volunteers | No |
Gender | All |
Age group | 40 Years and older |
Eligibility | Inclusion Criteria: 1. Signed informed consent 2. At least moderate COPD by Global Initiative for Chronic Obstructive Lung Disease spirometry criteria (FEV1/FVC < 0.7 and FEV1 < 80% predicted) 3. 10 pack year smoking history 4. Hospitalized with one or more of: 1. increased dyspnea 2. increased sputum 3. change in sputum character 5. Treated with corticosteroids and/or antibiotics for respiratory indications 6. Age > 40 years old Exclusion Criteria: 1. Discharging home on hospice 2. Inability to follow trial protocols 3. Pacemaker 4. Allergy to a component of the adhesive patches 5. Breastfeeding 6. Permanent/continuous atrial fibrillation |
Country | Name | City | State |
---|---|---|---|
n/a |
Lead Sponsor | Collaborator |
---|---|
Minneapolis Veterans Affairs Medical Center |
Type | Measure | Description | Time frame | Safety issue |
---|---|---|---|---|
Primary | Model fit from repeated measures mixed model of heart rate/activity slope | The investigators will average heart rate and activity (from accelerometer output) over 30-second periods. The highest 30-second average from each 5 minute period will be used to create the heart rate/activity slope for each 24-hour period while the device is worn. They will then model the change in heart rate/activity slope using a linear-mixed effect model with a random intercept and slope for each individual. | 28 days | |
Primary | Heart rate variability slopes (time and frequency-domain) | The investigators will use Kubios software to calculate heart rate variability (time and frequency domain measurements) for each 24-hour period that the patch is worn. They will use repeated mixed measures models with random intercept and slope to model the change in heart rate variability after discharge. | 28 days | |
Secondary | Comparison of heart rate/activity slope in participants readmitted vs not-readmitted | The investigators will compare heart rate/activity slope in participants who are readmitted to the hospital within 28 days to those who are not readmitted to the hospital within 28 days using a linear mix-effect model with random intercept and slope. | 28 days | |
Secondary | Comparison of heart rate variability slope in participants readmitted vs not-readmitted | The investigators will compare heart rate variability slopes (time and frequency domain) in participants who are readmitted to the hospital within 28 days to those who are not readmitted to the hospital within 28 days using a linear mix-effect model with random intercept and slope. | 28 days | |
Secondary | Acceptability to participants | We will query participants if the monitoring patch would be acceptable if it were shown to improve their care for COPD. | 28 days |
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