Table 3.

EPS of all patients.

No	Side of MAP	Combined arrhythmias	Minimal pre-excitation	M potential	AM	MV	Vabl-QRS	Vabl-RVApex	AP type	AP length
1	R1	AVNRT	+	+	76	33	−13	−22	AF	Long MAP
2	R2	None	—	—	None	None	9	49	AV	Short MAP
3	R3	AVNRT	+	+	83	69	−3	−13	AF	Long MAP
4	R4	None	+	+	114	27	−7	−26	AF	Long MAP
5	R5	None	—	—	None	None	6	33	AV	Short MAP
6	R6	None	—	—	None	None	9	51	AV	Short MAP
7	R7	AVNRT + Concealed AP	+	+	111	42	−11	−19	AF	Long MAP
8	R8	None	—	—	None	None	13	66	AV	Short MAP
9	R9	AVRT	—	+	87	44	−6	−21	AF	Long MAP
10	R10	None	—	—	None	None	14	49	AV	Short MAP
11	R11	AVNRT	+	+	43	61	−5	−9	AF	Long MAP
12	R12	None		—	None	None	10	54	AV	Short MAP
13	R13	AT		+	43	9	−8	−26	AF	Long MAP
14	L1	AVNRT + Concealed AP	—	—	None	None	11	49	AV	Short MAP
15	L2	None	—	—	None	None	22	69	AV	Short MAP
16	L3	None	+	—	None	None	26	53	AV	Short MAP
17	L4	None	—	—	None	None	33	62	AV	Short MAP

AF, atriofasicular; AP, accessory pathway; AM, the interval between the beginning of the atrial ECG and the M potential; AT, atrial tachycardia; AV, atrioventricular; AVRT, atrioventricular reentrant tachycardia; AVNRT, atrioventricular nodal reentrant tachycardia; EPS, electrophysiological study; L, left side; MV, the interval between the M potential and the beginning of ventricular ECG; MAP, Mahaim accessory pathway; SVT, supraventricular tachycardia; R, right side; RF, radiofrequency; V_Abl-QRS, the interval between the beginning of ventricular ECG and the beginning of the QRS complex; V_Abl-RV_Apex interval, the interval between the beginning of ventricular ECG at the successful ablation point and the ventricular ECG recorded from the RV apex.