What is the oxygen concentration delivered to a patient using a bag-valve-mask resuscitator?

The oxygen concentration delivered to a patient using a bag-valve-mask resuscitator is typically in the range of 90% to 100%. This high percentage of oxygen is achievable when the device is properly used and the mask fits securely on the patient's face, preventing air leakage. The bag-valve-mask is designed to deliver supplemental oxygen directly to the patient's lungs, making it an effective tool in providing critical respiratory support during emergencies or when a patient is unable to breathe adequately on their own.

In conjunction with supplemental oxygen being administered through the resuscitator, the combination of the bag and mask helps to facilitate more efficient delivery of oxygen, increasing its concentration significantly compared to normal room air, which contains about 21% oxygen. This makes the bag-valve-mask an essential component in resuscitation efforts, maximizing the chances of maintaining oxygenation and supporting the patient's vital functions until further medical intervention can be provided.