Table 1.

Subject characteristics

Group	ID	Age (y)	Sex	Height (cm)	Weight (kg)	LVEF (%)	QRS (ms)	QTcB (ms)
Normal	1	60	F	169	75	61	88	431
	2	65	F	163	65	61	94	404
	3	65	M	170	70	69	98	398
	4	56	F	177	128	53	92	419
	5	67	F	155	57	55	80	406
	6	53	F	170	60	60	84	399
	7	53	F	176	79	67	82	389
	8	52	F	172	91	61	94	442
	9	62	F	165	54	56	78	411
	10	62	M	186	90	57	96	422
	11	50	M	176	62	55	100	442
	12	25	F	158	50	64	99	445
	13	37	F	164	57	55	58	423
	14	28	F	164	49	58	89	458
	15	49	F	174	72	66	90	423
	16	49	F	172	61	67	91	438
	17	56	F	168	68	67	93	440
	18	50	F	164	66	57	94	419
	19	40	F	168	64	71	90	433
	20	40	M	178	60	53	65	427
	21	21	M	180	80	63	79	418
	22	30	M	183	75	59	75	428
Pathological	RBBB	71	M	170	72	21	166	453
	LBBB Pat. A	77	F	162	66	27	132	486
	LBBB Pat. B	52	F	168	112	56	158	455
	LBBB Pat. C	51	F	179	79	53	150	474
	Symp. LQT2	49	F	180	84	63	82	500
	Symp. LQT3	38	M	190	87	53	96	486
	Asymp. LQT1	49	M	183	84	55	108	457
	Asymp. LQT3	36	F	161	53	59	72	438

F, female; LBBB, left bundle branch block; LQT, long-QT; LVEF, left ventricular ejection fraction; M, male; Pat., patient; QTcB, QT interval corrected according to Bazett’s formula; RBBB, right bundle branch block; SD, standard deviation.

LQTS patients are further divided into symptomatic (‘Symp.’; with history of ventricular tachyarrhythmias) and asymptomatic (‘Asymp.’; without such history).