AI Article Synopsis
- Remote dielectric sensing (ReDS) is a non-invasive technology used to measure lung fluid levels, and the study explored its correlation with the six-minute walk test (6MWT) in patients with severe aortic stenosis awaiting valve replacement.
- 25 hospitalized patients (average age 85) underwent both ReDS and 6MWT measurements, revealing a moderate inverse relationship between 6MWD and ReDS values, indicating that less walking distance was associated with higher lung congestion.
- The findings suggest that ReDS can effectively indicate pulmonary congestion, as patients with a ReDS value ≥30% displayed significantly shorter 6MWD, thus providing a potential tool for assessing exercise capacity in this
Article Abstract
Background: Remote dielectric sensing (ReDS) is a novel non-invasive electromagnetic energy-incorporated technology to quantify lung fluid levels. The six-minute walk test is an established method to assess exercise capacity among those with a variety of chronic conditions related to heart and pulmonary diseases. We aimed to understand the association between ReDS value and six-minute walk distance (6MWD) in patients with severe aortic stenosis being evaluated for valve replacement.
Methods: Patients who were hospitalized to receive trans-catheter aortic valve replacement were prospectively included and simultaneous ReDS and 6MWD measurements were performed on admission. We attempted to correlate 6MWD with ReDS value.
Results: A total of 25 patients (median 85 years, 11 men) were included. Median 6MWD was 168 (133, 244) meters and median ReDS value was 26 % (23 %, 30 %). 6MWD displayed a moderate inverse correlation with ReDS value (r = -0.516, p = 0.008) and significantly distinguished ReDS value ≥30 %, representing mild or greater pulmonary congestion, at a cut-off of 170 m (sensitivity 0.67 and specificity 1.00).
Conclusions: 6MWD had a moderate inverse correlation with ReDS values among candidates for trans-catheter aortic valve replacement, indicating that patients with shorter 6MWD had increased pulmonary congestion as assessed by ReDS system.
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| http://dx.doi.org/10.1016/j.jjcc.2023.05.004 | DOI Listing |
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