Editor’s key points † Superimposed high-frequency jet ventilation (SHFJV) involves simultaneous normal frequency (12–20 min) and high-frequency jet ventilation (HFJV) (.500 min). † SHFJV may improve ventilation and gas exchange compared with HFJValone, but the optimum frequencies for SHFJV are unknown. † In this animal model, end-expiratory and tidal volumes determined by opto-electronic plethy...

PURPOSE To investigate the spatial frequency selectivity of the human motion system by using the technique of visual masking. METHODS Modulation-depth thresholds for identifying the direction of a sinusoidal test pattern were measured over a range of spatial frequencies (0.25-4 cyc/deg) in the absence and presence of a temporally jittering mask. RESULTS At the lowest test frequency (0.25 cy...

OBJECTIVE To evaluate the safety and effectiveness of high-frequency oscillatory ventilation using a protocol designed to recruit and maintain optimal lung volume in patients with severe adult respiratory distress syndrome (ARDS). SETTING Surgical and medical intensive care units in a tertiary care, military teaching hospital. DESIGN A prospective, clinical study. PATIENTS Seventeen patie...

This article intends to review literature on high frequency oscillatory ventilation and describe its main clinical applications for children and neonates. Articles from the last 15 years were selected using MedLine and SciElo databases. The following key words were used: high frequency oscillatory ventilation, mechanical ventilation, acute respiratory distress syndrome, children, and new-born. ...