Paolo Gritti, Marco Bonfanti, Rosalia Zangari, Ezio Bonanomi, Alessia Farina, Giulio Pezzetti, Isabella Pelliccioli, Luca Longhi, Maria Di Matteo, Andrea Viscone, Gabriele Lando, Gaia Cavalleri, Simonetta Gerevini, Francesco Biroli, Ferdinando Luca Lorini
BACKGROUND: The ultra-low-frequency pressure reactivity index (UL-PRx) has been established as a surrogate method for bedside estimation of cerebral autoregulation (CA). Although this index has been shown to be a predictor of outcome in adult and pediatric patients with traumatic brain injury (TBI), a comprehensive evaluation of low sampling rate data collection (0.0033 Hz averaged over 5 min) on cerebrovascular reactivity has never been performed. OBJECTIVE: To evaluate the performance and predictive power of the UL-PRx for 12-month outcome measures, alongside all International Mission for Prognosis and Analysis of Clinical Trials (IMPACT) models and in different age groups...
January 23, 2024: Critical Care: the Official Journal of the Critical Care Forum