title: Effective measures in the prevention of intraoperative aeroembolus.
mesh_terms: D001021:Aortic Valve / Q000601:surgery; D006348:Cardiac Surgical Procedures / Q000009:adverse effects*; D004569:Electroencephalography; D004618:Embolism, Air / Q000175:diagnosis / Q000517:prevention & control*; D005112:Extracorporeal Circulation; D006801:Humans; D014463:Ultrasonography