Influence of face mask design on bag-valve-mask ventilation performance: a randomized simulation study

Area of Science:

• Emergency Medicine
• Resuscitation Science
• Medical Device Evaluation

Background:

• Face mask design impacts bag-valve-mask (BVM) ventilation during resuscitation.
• Comparing an air-cushioned mask (AM) with a reusable silicone mask (SM) for BVM performance is crucial.

Purpose of the Study:

• To compare the ventilation quality of an AM versus an SM during simulated cardiac arrest resuscitation.
• To evaluate the influence of rescuer physical characteristics on BVM ventilation with different masks.

Main Methods:

• A randomized crossover study involving 32 physicians using a manikin lung simulator.
• Participants performed BVM ventilation with both AM and SM after standardized training.

Main Results:

• Mean tidal volume was significantly higher with the AM (548 ml) compared to the SM (439 ml).
• The proportion of low-volume ventilation was significantly lower with the AM.
• AM ventilation was unaffected by rescuer characteristics, while SM ventilation varied with sex, height, weight, and grip strength.

Conclusions:

• The AM is more efficient for delivering adequate ventilation volumes during BVM resuscitation.
• AM performance is independent of rescuer physical attributes.
• The SM's performance variability suggests it may be less suitable for certain rescuers in one-person BVM scenarios.