In CPR classes and other trainings in which I was taught the Heinrich, you are supposed to get consent from the person choking before performing the maneuver. Usually you ask clearly and loudly, and assume a nod is consent. If the person goes unconscious, consent is implied for giving CPR. Whether that is legally defendable in court if they decide to sue you after the fact, I have no idea.
In CPR classes and other trainings in which I was taught the Heinrich, you are supposed to get consent from the person choking before performing the maneuver. Usually you ask clearly and loudly, and assume a nod is consent. If the person goes unconscious, consent is implied for giving CPR. Whether that is legally defendable in court if they decide to sue you after the fact, I have no idea.