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This study aims at characterizing the short-term time-courses of time- and frequency-domain heart rate variability (HRV) parameters during head-up tilt test (HUTT). Data from 44 young patients with a history of syncope and 34 age-matched controls was analysed in two age-groups related to puberty (<13 and >14 years), and separately for gender, by extracting minute-by-minute progression of mean...
This study examines the utility of heart rate variability (HRV) and repolarization parameters to predict the outcome of head-up tilt tests from early phases of the response to tilting in 44 young patients with syncope and 34 age-matched controls. Synchronized to the tilting events, we extracted minute-by-minute progression of time- and frequency domain HRV descriptors as well as mean QT interval and...
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