The following paper https://www.ncbi.nlm.nih.gov/pubmed/23994203 states that there was no effectiveness of the precordial thump in their study, if I read it correctly.
Is this the medical consensus on this technique? What do other papers say? Does there exist a survey paper on advanced cardiac life support that perhaps has looked more into this particular technique?
Do medical schools in general teach this technique, in modern times? Do doctors tend to use this technique, in reality?