Transesophageal pacing for prognostic evaluation of preexcitation syndrome and assessment of protective therapy

Combination therapy with aprindine and verapamil for paroxysmal supraventricular tachycardia as assessed by transesophageal atrial pacing

“…However, there have been few reports that assess the chronic effects of oral combined antiarrhythmic drugs by performing serial electrophysiologic studies. On the other hand, it is well known that transesophageal atrial pacing is a very useful tool for predicting the drug's effects on tachyarrhythmias [5][6][7][8][9]. We reported that in patients with supraventricular tachycardia, the electrophysiologic parameters determined by transesophageal atrial pacing were almost the same as those determined by invasive atrial pacing.…”

Successive Myocardial Infarctions in a Patient with Mahaim Fiber Syndrome

“…1 " 4 A more accurate diagnosis can be obtained when the following additional events are recorded: (1) episodes of very rapid heart action, 8 especially pseudoventricular tachycardias with a left bundlebranch-block morphology; 1,5 (2) intermittent delta wave; and (3) absence of change in the ventricular pre-excitation pattern in spite of P-R interval variations. 1,2 The P-R interval variations may be caused by spontaneous atrial extrasystoles, 2 noninvasive atrial pacing, 6 or atrioventricular nodal conduction disturbances. 1 However, sophisticated electrophysiologic studies may be necessary for diagnosis in several circumstances, including a relatively short P-R interval, 1 and Mahaim fibers functioning only during tachyarrhythmic episodes.…”

Should patients with asymptomatic wolff-parkinson-white pattern undergo a catheter ablation?

“…Suffice it to say that, with the exception of transesophageal pacing, all of them rely on assessments of accessory pathway conduction in sinus rhythm and are imperfect surrogates for a test that is in itself problematic. Although transesophageal pacing has proponents [11], it provides less information than catheter electrophysiologic study and is arguably of similar risk and discomfort. …”