The study will investigate, if inflammatory and cardio-circulatory biochemical biomarkers are detectable in dermal interstitial fluid (dISF) of heart failure patients, and if there are detectable kinetics of these biomarkers during a cardiopulmonary exercise test. For dISF extraction the PELSA System - an investigational device - will be used.
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Detection of inflammatory and cardio-circulatory biochemical biomarkers in dermal interstitial fluid of heart failure patients
Timeframe: Before, immediate after and 30 min after a cardiopulmonary exercise test.