Adult Mouth-to-Mask and Bag-Mask Ventilation

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BLS Adult Mouth to Mask A
BLS Adult Mouth to Mask B
BLS Adult Mouth to Mask C

Figure 5

Breaths should be given with a pocket mask whenever available in one-rescuer CPR.

  1. Deliver 30 high-quality chest compressions.
  2. To secure the mask on the patient’s face, place four fingers of one hand along the mask’s top, with the other hand’s thumb on the bottom edge (Figure 5a).
  3. Use the head-tilt/chin-lift maneuver to open the airway, but do not do this if the patient is suspected to have a neck injury (Figure 5b).
  4. Press the edges of the mask with strength and deliver a breath that lasts over one second while observing the rise in the patient’s chest (Figure 14c).
  5. The bag valve mask is crucial in creating the tight seal; practice this technique.

Adult Bag-Mask Ventilation in Two-Rescuer CPR

BLS Bag Mask A
BLS Bag Mask B
BLS Bag Mask C

Figure 6

When the bag-mask device is available and two people are around, the second rescuer must be at the patient’s head; the first rescuer delivers 30 high-quality chest compressions.

  1. Count out loud while delivering the chest compressions to avoid losing count (Figure 6a).
  2. The first rescuer should open the airway by raising the patient’s lower jaw, while the second rescuer secures the bag-mask by using his or her index finger and thumb and shaping it in a “C” on a single side of the mask to properly seal the mask and the face (Figure 5b).
  3. The second rescuer then gives two breaths; each breath must be over one second (Figure 6c).
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