Though in that particular scenario, while it feels wasteful, for an average person is exceedingly rare. The only paramedic supply I’ve had used on me in my lifetime was when my car got rear ended badly and they gave me a blanket because I just conversationally mentioned it was kind of cold while they were checking in with me. Going for a dental cleaning or a physical there’ll be some single use plastics to be sure, but again, only like 3 times a year usually.