High Frequency Chest Wall Oscillation (HFCWO) | 合法醫療器材資訊網

2020年3月18日—High-frequencychestwalloscillation(HFCWO)isanairwayclearancetechniqueinwhichexternalchestwalloscillationsareappliedtothe ...

High-frequency chest wall oscillation (HFCWO) is an airway clearance technique[1] in which external chest wall oscillations are applied to the chest using an inflatable vest that wraps around the chest. These machines produce vibrations at variable frequencies and intensities, helping to loosen and thin mucus and separate it from airway walls.

HFCWO devices use positive and negative pressure changes to increase peripheral and tracheal mucus movement toward the airway opening. High-frequency air pulses to the vest make oscillatory chest wall compressions[2], increasing the pressure during inflation and leading to a short burst of expiratory flow of up to 1.6L/second. Typically, a user pauses during the 20- to 30-minute HFCWO treatment every 5 minutes to cough out loosened mucus that has moved into the large airways.

Different lines of thought exis...