Multiorificed catheter placement with an intravascular electrocardiographic technique.
D006328:Cardiac Catheterization / Q000379:methods*; D004562:Electrocardiography / Q000379:methods*; D006325:Heart Atria / Q000000981:diagnostic imaging; D006801:Humans; D007796:Laminectomy / Q000379:methods; D011187:Posture; D011859:Radiography