TY - BOOK AU - Mohammad Shafiq Awad AU - Amir Mohammad Abdelwahab , AU - Magdy Abdelhamid Abdelaziz , AU - Yasser Ahmed Abdelhady , TI - New criteria during right ventricular pacing to determine the mechanism of supraventricular tachycardia / PY - 2013/// CY - Cairo : PB - Mohammad Shafiq Awad , KW - Accessory pathway KW - Atrial preexcitation KW - Atrioventricular reentrant tachycardia N1 - Thesis (Ph.D.) - Cairo University - Faculty of Medicine - Department of Cardiology; Issued also as CD N2 - Post - pacing interval minus tachycardia cycle length (PPI-TCL) during right ventricular (RV)entrainment can help in differentiation between atrioventricular reentrant tachycardia (AVRT) and AV nodal reentrant tachycardia (AVNRT) however it has some fallacies and limitations . RV pacing during SVT produces progressive QRS fusion before the QRS morphology becomes stable ER -