> I'd also wager that CPR done by trained first responders falls in the much lower-end percentage of injuries like liver lacerations. Maybe, maybe not. Consid

> I'd also wager that CPR done by trained first responders falls in the much lower-end percentage of injuries like liver lacerations. Maybe, maybe not. Considering where human livers are located (https://en.wikipedia.org/wiki/Liver#/media/File:Liver_01_animation1.gif https://en.wikipedia.org/wiki/Liver#/media/File:Liver_01_ani...), any lower rib or sternum fracture probably has a risk of injuring the liver. Professional CPR training might make this less likely, but I'm far from convinced. Anyway, in the scenario I imagine, the 'first responders' who first did CPR are the cops who just beat this guy up and realized he stopped breathing. Technically trained as first responders, but certainly not level headed paramedics. So maybe CPR only lacerates livers when done incompetently, but maybe the first responders were less than competent.