How do you ensure a good seal during bag-valve-mask ventilation?

The "E-C" clamp technique is the recommended method for ensuring a good seal during bag-valve-mask (BVM) ventilation. This technique involves using the thumb and index finger to form a 'C' shape around the mask, while the remaining fingers can be positioned in an 'E' shape on the patient's jaw. This creates a tight seal around the mask and allows for a more effective delivery of air to the lungs.

Using the "E-C" technique ensures that you can maintain a strong and consistent pressure on the mask, preventing air leaks while also allowing you to adjust the patient's airway as necessary. Additionally, it provides better control of the patient's head position, which is crucial for optimal ventilation.

In contrast, other techniques may not provide the same level of effectiveness. A one-handed grip might not create a secure enough seal, and a two-handed grip, while potentially effective for some, does not provide the same ergonomic advantages or control as the "E-C" technique does in a typical BVM situation. This makes the "E-C" clamp technique essential for ensuring air is effectively delivered and supporting the overall success of ventilation during resuscitation efforts.