In Nevada, it wouldn't surprise me. The US is indeed filled with assholes.^1^ Most of the world though, has good Samaritan laws and you won't face criminal charges if you were actively trying to save a life outside of extremely gross negligence. Many places of the world also have strong first aid certification programs that further protect those certified as long as they followed the standard protocol.

^1^: Disregard that comment, Nevada does have Good Samaritan laws, that person's friend is just a piece of shit.

That isn't true in the US or Europe so not sure where you're talking about.