Figure 2. Simultaneous recordings of surface ECG lead II (II-upper trace) and bipolar esophageal electrogram (ES-lower trace). Note that esophageal P waves have nearly the same amplitude as QRS complexes. Paper speed = 25 mm/s; 1.0 mV = 1.0 cm.
Figure 2. Simultaneous recordings of surface ECG lead II (II-upper trace) and bipolar esophageal electrogram (ES-lower trace). Note that esophageal P waves have nearly the same amplitude as QRS complexes. Paper speed = 25 mm/s; 1.0 mV = 1.0 cm.
