"sudden cardiac arrest (SCA) ... In this case, the first course of action is to remove all clothing and perform chest compressions ..." I admit my CPR training

"sudden cardiac arrest (SCA) ... In this case, the first course of action is to remove all clothing and perform chest compressions ..." I admit my CPR training is quite awhile ago, but I don't remember "remove all clothing." The premise of the article/advertisement is plausible, but this just sounds weird.