Background: Ventricular overdrive pacing (VOP) may provide useful information for differentiating orthodromic reciprocating tachycardia (ORT) from atrioventricular nodal reentrant tachycardia (AVNRT), independent from entrainment success. Methods: 62 patients (pts) with ORT and AVNRT and VOP trains from th...
METHODS AND RESULTS: We included 470 patients who underwent an electrophysiological study for paroxysmal, regular, and narrow-QRS complex tachycardia without pre-excitation in sinus rhythm. The ECG recordings were reviewed for the pdoi:10.1016/S0735-1097(04)90500-1eban González-Torrecilla...