No chest elevation was found during cardiopulmonary cerebral resuscitation. What are the possible reasons?

Most likely, the airway is not open in place. When the airway is opened by lifting the forehead, the patient's head angle is not enough, and the airway is not completely unblocked, so there will be no ups and downs without blowing into the chest.

In addition, it is possible that the airway is blocked by foreign bodies or secretions, which will also cause poor ventilation without chest fluctuation. Secondly, there is another possibility that the patient's nose is not completely pinched when blowing, and the blown gas basically leaks out of the nose and does not enter the lungs.

The answer is for reference only …