[pilom]

Counterpoint, I'm a whitewater rescue instructor. My students and I are much more likely to see drowning victims than heart attack patients. Compression only CPR doesn't help drowning victims at all so we've had to add a "don't listen to your CPR instructor, do rescue breaths first" statement to our classes.

[hprotagonist]

Yep, drowning (and cold water drowning in particular) gets special rules. And a better save rate, iirc…