Don't abandon Martin's intravascular electrocardiography technique!
Johans
Thomas G
TG
D006328:Cardiac Catheterization / Q000379:methods*; D017548:Echocardiography, Transesophageal / Q000379:methods*; D004562:Electrocardiography / Q000379:methods*; D004618:Embolism, Air / Q000628:therapy*; D006325:Heart Atria / Q000000981:diagnostic imaging; D006801:Humans; D014683:Vena Cava, Superior