The Heart Rate is a mechanic in the Amateur Surgeon series that determines the patient's health. If the patient's health rate drops to 0, they will die, resulting in a game over.
In Amateur Surgeon 1, Christmas Edition, and 4, special animations after a patient's death will play, while in games 2 and 3 a simple clipboard is shown indicating a patient's death. All deaths play the same dooming flatline.
- Usually, when leaving a cut cauterised, the heart rate will drop faster until the player heals it.
- Unlike Alan Probe in Amateur Surgeon, Ignacious Bleed II lets out a fully audible yell whenever a patient dies in Amateur Surgeon 4. A sample can be heard here.