How should the electrodes be positioned in the esophagus for atrial pacing?
Threshold current for successful “capture” varies with the distance between the esophageal electrodes and atrial myocardium (typically 5-12 mm). Optimal depth of catheter insertion can be estimated with a formula based upon patient’s height or by maximizing the P-wave of the esophageal ECG. (See Positioning Electrodes) .
