Sweat Lactate Sensor for Detecting Anaerobic Threshold in Heart Failure: LacS-001 Clinical Trial
Abstract
A prospective clinical trial (LacS-001) aimed to investigate the safety and correlation between sweat lactate threshold (sLT) and ventilatory threshold (VT) in patients with heart failure (HF). 50 HF patients participated in incremental exercise tests while using a sweat lactate-monitoring sensor. The primary outcomes were a correlation coefficient of ≥ 0.6 between sLT and VT, similarities as assessed by the Bland-Altman analysis, and standard deviation of the difference within 15 W.
A correlation coefficient of 0.651 (95% confidence interval, 0.391-0.815) was achieved in 32/50 cases. The difference between sLT and VT was -4.9 ± 15.0 W. No comparative error was noted in the Bland-Altman plot. No device-related adverse events were reported among the registered patients. The sweat lactate sensor is safe and accurate for detecting VT in patients with HF in clinical settings, offering valuable additional information for treatment.
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