What is the recommended two-person technique to optimize BVM ventilation?

What is the recommended two-person technique to optimize BVM ventilation?

• A. One rescuer keeps one hand on the mask while the other squeezes the bag with no seal
• B. One rescuer maintains a proper mask seal with a two-hand mask grip (C-E grip), while the second rescues squeezes the bag to deliver ventilations with appropriate tidal volume
• C. Each rescuer alternates every breath
• D. Use only one rescuer for both sealing and bagging

Answer: (B)

Two-person BVM ventilation works best when each rescuer focuses on a distinct, critical task: one person creates and maintains a high-quality mask seal with a two-hand grip, while the other person squeezes the bag to deliver breaths with an appropriate tidal volume. The mask sealer uses a two-hand (C-E) grip to lock the mask to the face and lift the jaw, creating a tight, leak-free seal that keeps air from escaping around the mask. With the seal secure, the second rescuer can deliver breaths without fighting mask leaks, allowing a more reliable and controlled ventilation. Delivering an appropriate tidal volume is key—enough air to produce visible chest rise but not so much that you risk gastric inflation or excessive airway pressure. In practice, aim for a volume that achieves adequate ventilation without overdistending the lungs, typically around 500–600 mL in a typical adult (roughly 6–7 mL/kg). This coordination minimizes interruptions and maximizes effective ventilation. This approach is preferred over a single rescuer trying to seal and bag at the same time, or over alternating breaths, because maintaining a consistent, effective mask seal and delivering suitable volumes requires dedicated attention from two rescuers.

Two-person BVM ventilation works best when each rescuer focuses on a distinct, critical task: one person creates and maintains a high-quality mask seal with a two-hand grip, while the other person squeezes the bag to deliver breaths with an appropriate tidal volume. The mask sealer uses a two-hand (C-E) grip to lock the mask to the face and lift the jaw, creating a tight, leak-free seal that keeps air from escaping around the mask. With the seal secure, the second rescuer can deliver breaths without fighting mask leaks, allowing a more reliable and controlled ventilation.

Delivering an appropriate tidal volume is key—enough air to produce visible chest rise but not so much that you risk gastric inflation or excessive airway pressure. In practice, aim for a volume that achieves adequate ventilation without overdistending the lungs, typically around 500–600 mL in a typical adult (roughly 6–7 mL/kg). This coordination minimizes interruptions and maximizes effective ventilation.

This approach is preferred over a single rescuer trying to seal and bag at the same time, or over alternating breaths, because maintaining a consistent, effective mask seal and delivering suitable volumes requires dedicated attention from two rescuers.