An orderly in english is a caretaker in a long term care facility. Not necessarily a nurse but someone physically strong enough to help patients out of bed or chairs or to restrain an out of control patient having an episode etc.
What is "un infirmier" a Male Nurse or some sort of Hospital Janitor?
More like a male nurse.
A male nurse
I doubt that the English translation "an orderly goes" makes any sense?
So the sentence makes perfect sense