What is the correct volume of air to deliver during each ventilation when using BVM?

The appropriate volume of air to deliver during each ventilation when using a Bag-Valve-Mask (BVM) device is around 700 mL. This volume is considered effective for providing adequate ventilation to most adult patients. Delivering this amount helps ensure that sufficient oxygen is distributed to the lungs while avoiding over-inflation, which could lead to barotrauma or stomach distension.

Delivering 500 mL may not provide enough volume to achieve adequate ventilation, particularly in adults who typically require more air to ensure effective gas exchange. Volumes around 1000 mL or more may also risk complications such as ventilating the stomach instead of the lungs, which diminishes the efficiency of oxygen delivery and can increase the risk of aspiration and other airway complications.

Therefore, delivering approximately 700 mL strikes a balance between effectiveness and safety during ventilation with a BVM.