Comment FISIOLOGIA and I'll send you the topic summary.
CPR doesn't exist to meet a certain depth.
It exists to generate perfusion.
In the operating room, if you already have EtCO₂, arterial line, plethysmography or NIRS, you are not resuscitating blindly: you have real-time physiology.
The algorithm matters.
The metronome helps.
Depth counts.
But if the patient is not perfusing, physiology has to enter the conversation.
Because a "correct" CPR on the checklist can still be insufficient for the patient in front of you.