Now, do surgical masks let air in and out the sides so that the surgeon can get enough air flow to, you know, be able to breathe well enough to, you know, concentrate on his work, while the front of the mask blocks any dribbles of saliva that might escape while he is talking to the other surgical staff, thus stopping said saliva, which is filled with bacteria, from getting into the patient’s fresh surgical wound?
It keeps his cigarette ash from falling into the patient, also.
yeah hypoxia with your heart surgeon could be a bit of a game changer for you...