High-Frequency Percussive Ventilation: Pneumotachograph Validation and Tidal Volume Analysis

INTRODUCTION: High-frequency percussive ventilation (HFPV) is an increasingly used mode of mechanical ventilation, for which there is no proven real-time means of measuring delivered tidal volume (VT). OBJECTIVE: To validate a pneumotachograph for HFPV and then exploit flow-sensor data to describe the behavior of both low-frequency and high-frequency breaths. METH-ODS: Sensor performance was gauged during changes in high-frequency (4–12 Hz) and low