How to interpret electroanatomic maps

Published:November 08, 2005DOI:
      Electroanatomic mapping refers to the acquisition and display of electrical information combined with spatial localization. Technologies presently available include both contact and noncontact electroanatomic mapping. This review focuses on the creation and proper interpretation of contact electroanatomic maps, which involves the sequential recording of unipolar or bipolar electrograms with a catheter in contact with the endocardium or epicardium and display of this information on a three-dimensional navigation system. These techniques have become invaluable in the evaluation of complex arrhythmias by providing a spatial catalogue of electrical information. This allows the user to define an area of interest with greater resolution than is possible using fluoroscopy alone and to revisit sites of interest that already have been catalogued.


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        • Gepstein L.
        • Hayam G.
        • Ben-Haim S.A.
        A novel method for nonfluoroscopic catheter-based electroanatomical mapping of the heart. In vitro and in vivo accuracy results.
        Circulation. 1997; 95: 1611-1622
        • de Groot N.M.
        • Bootsma M.
        • van der Velde E.T.
        • Schalij M.J.
        Three-dimensional catheter positioning during radiofrequency ablation in patients.
        J Cardiovasc Electrophysiol. 2000; 11: 1183-1192
        • Krum D.
        • Goel A.
        • Hauck J.
        • Schweitzer J.
        • Hare J.
        • Attari M.
        • Dhala A.
        • Cooley R.
        • Akhtar M.
        • Sra J.
        Catheter location, tracking, cardiac chamber geometry creation, and ablation using cutaneous patches.
        J Interv Card Electrophysiol. 2005; 12: 17-22
        • Markowitz S.M.
        • Brodman R.F.
        • Stein K.M.
        • Mittal S.
        • Slotwiner D.J.
        • Iwai S.
        • Das M.K.
        • Lerman B.B.
        Lesional tachycardias related to mitral valve surgery.
        J Am Coll Cardiol. 2002; 39: 1973-1983
        • Iwai S.
        • Markowitz S.M.
        • Stein K.M.
        • Mittal S.
        • Slotwiner D.J.
        • Das M.K.
        • Cohen J.D.
        • Hao S.C.
        • Lerman B.B.
        Response to adenosine differentiates focal from macroreentrant atrial tachycardia.
        Circulation. 2002; 106: 2793-2799
        • Marchlinski F.E.
        • Callans D.J.
        • Gottlieb C.D.
        • Zado E.
        Linear ablation lesions for control of unmappable ventricular tachycardia in patients with ischemic and nonischemic cardiomyopathy.
        Circulation. 2000; 101: 1288-1296
        • Nakagawa H.
        • Shah N.
        • Matsudaira K.
        • Overholt E.
        • Chandrasekaran K.
        • Beckman K.J.
        • Spector P.
        • Calame J.D.
        • Rao A.
        • Hasdemir C.
        • Otomo K.
        • Wang Z.
        • Lazzara R.
        • Jackman W.M.
        Characterization of reentrant circuit in macroreentrant right atrial tachycardia after surgical repair of congenital heart disease.
        Circulation. 2001; 103: 699-709
        • de Groot N.M.
        • Schalij M.J.
        • Zeppenfeld K.
        • Blom N.A.
        • Van der Velde E.T.
        • Van der Wall E.E.
        Voltage and activation mapping.
        Circulation. 2003; 108: 2099-2106
        • Triedman J.K.
        • Alexander M.E.
        • Berul C.I.
        • Bevilacqua L.M.
        • Walsh E.P.
        Electroanatomic mapping of entrained and exit zones in patients with repaired congenital heart disease and intra-atrial reentrant tachycardia.
        Circulation. 2001; 103: 2060-2065
        • Soejima K.
        • Stevenson W.G.
        • Maisel W.H.
        • Sapp J.L.
        • Epstein L.M.
        Electrically unexcitable scar mapping based on pacing threshold for identification of the reentry circuit isthmus.
        Circulation. 2002; 106: 1678-1683