High-frequency jet ventilation (HFJV) has emerged as a valuable tool in the armamentarium of anaesthetists, offering unique advantages in a variety of clinical scenarios. This technique, characterized by the delivery of high-velocity gas bursts at frequencies significantly higher than conventional ventilation, has gained widespread recognition for its ability to maintain adequate ventilation during procedures involving the airway and surrounding structures.

At the heart of HFJV lies the principle of rapid gas exchange, achieved through the delivery of high-pressure gas pulses. This mechanism ensures efficient gas flow, oxygenation, and ventilation, even in the presence of partial airway obstruction. The Monsoon 4’s exceptional versatility stems from its ability to deliver a wide range of frequencies, ranging from 4 to 1600 breaths per minute.