which step in the crisis procedure includes professionals using their physical presence, voice and eye contact

Adiabetic patient goes to a doctor for the amputation of his gangrenous right leg. the doctor diagnoses him and schedules the patient for surgery. the patient signs a consent form for the surgery. the doctor performs the surgery but removes his left leg instead, which was also gangrenous and threatening the patient's life. if the patient did not have his left leg removed, it is possible he could have died. does the patient have any claims against the doctor? if so, what claim(s), and why?