Yes, but if you have it, you might use it on someone else's child. And you might be in a position to do 2-person CPR. And you get 21% O2 into the patient, not 16%. But yes, it does require training. But then again, so does most everything that we carry/discuss here. You and I, personally, are probably a little "spoiled" because of the training and experience that we get on the job. Others are not so lucky regarding training.
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"We are not allowed to stop thinking"