Diagnostic value of the bipolar esophageal electrocardiographic lead for detection of disorders of cardiac rhythm and conductivity at rest, during physical exercise and with Valsalva’s maneuver.
Lukoshiavichiute AI, Gedrimene DA, Shvela G, Bishoff K. Kardiologiia 1988 Feb;28(2):17-9. Diagnosis of some heart rhythm disorders is based on bipolar esophageal ECG lead that can detect a P wave of greater amplitude, as compared to the QRS complex. The diagnostic value of bipolar esophageal ECG lead is in that it provides a more reliable assessment of pacemaker localization (both nomotopic and heterotopic), the sinoatrial node rhythm, extrasystole localization, type and mechanism of paroxysmal tachycardias, as well as antegrade and retrograde (ventricle-to-atrium) impulse conduction. Bipolar esophageal ECG lead records contribute to correct assessment of cardiac rhythm and conductivity disorders at rest as well as during exercise and Valsalva's test.