a trainee hold an oxygen mask with two hands with a nurse ventilventilating via ambubag

adult aid ambubag assistance cardiopulmonary chest class compression course cpr death doll dummy during education emergency equipment first floor hands health healthcare heart help hold hospital learning life lying mannequin mask medical medicine model nurse oxygen people photography practice procedure professional pumping rescue rescuer resuscitation safe saving sos support teaching technique train trainee training two unconscious ventil ventilating ventilventilating via