UltraTrac Clinical Pilot Study

This single-center pilot study will evaluate the accuracy and feasibility of non-invasive cardiac output measurement using the UltraTrac device in pediatric patients aged 0-21 years undergoing standard-of-care diagnostic cardiac catheterization. UltraTrac integrates ultrasound with impedance cardiography (ICG) to refine stroke volume and cardiac output calculations. During catheterization, trained staff will apply four surface-skin electrodes and a Doppler probe and obtain UltraTrac measurements without altering standard clinical care. The primary objective is to assess concordance between algorithm-derived cardiac output and gold-standard invasive measurements (Fick or thermodilution). The secondary objective is to evaluate human-factors issues reported by clinicians during device use. The study will enroll 50 hemodynamically stable pediatric participants, with up to 60 screened to account for screen failures. UltraTrac poses no more than minimal risk, using noninvasive sensors comparable to standard electrocardiogram (ECG) and Doppler procedures. Measurements will be performed only when clinically appropriate, and no UltraTrac data will be used to guide patient care.