Table 1

R wave amplitude in lead 1 and ECG parameters in 30 patients

R wave amplitude and ECG parameters in 30 patients from group C (276 patients)
Subject	1		2		3		4		5
Parameters/ECG type	NEP	STD	NEP	STD	NEP	STD	NEP	STD	NEP	STD
PR interval (ms)	177	178	152	155	172	173	173	172	148	150
QRS duration	98	95	98	100	110	112	105	101	100	92
Axis	−17	−19	−3	−7	−31	−27	−11	−8	−38	−33
R wave amplitude lead 1(mm)	14	14	10	11	6	5	13	15	6	6
QTc	404	402	438	424	443	443	400	406	435	427

Subject	6		7		8		9		10
PR interval (ms)	200	200	130	128	158	148	170	168	173	170
QRS duration	132	133	82	87	67	67	110	115	129	132
Axis	−83	−84	55	48	83	82	65	67	89	91
R wave amplitude lead 1 (mm)	3	3.5	7	7	5	5	5	5	4	4
QTc	432	430	392	398	382	385	444	442	452	448

Subject	11		12		13		14		15
PR interval (ms)	158	160	225	227	203	197	150	143	173	177
QRS duration	84	83	175	173	120	135	93	97	180	190
Axis	4	14	−65	−63	−41	−40	6	4	82	81
R wave amplitude lead 1 (mm)	10	10	3	3	11	11	7	7	3	3
QTc	402	403	496	482	425	452	396	399	499	505

Subject	16		17		18		19		20
PR interval (ms)	150	153	168	155	130	133	155	153	193	187
QRS duration	97	97	105	118	183	197	85	84	114	113
Axis	36	39	−13	−15	13	6	68	64	62	55
R wave amplitude lead 1 (mm)	7	6	7	7	13	13	4	4.5	6.5	7
QTc	400	409	419	424	499	493	412	411	420	425

Subject	21		22		23		24		25
PR interval (ms)	187	188	143	140	158	162	147	137	187	210
QRS duration	130	129	97	100	87	85	130	140	93	97
Axis	−24	−25	25	22	39	40	−54	−49	−24	−21
R wave amplitude lead 1 (mm)	10	9	9	9	5	5	7	7	7	7
QTc	418	409	406	435	433	436	448	445	434	440

Subject	26		27		28		29		30
PR interval (ms)	183	180	173	173	157	147	150	147	223	220
QRS duration	87	90	124	114	76	86	93	86	90	90
Axis	68	68	40	44	23	18	51	50	37	34
R wave amplitude lead 1 (mm)	4	4	3	3	8	8	7	7.5	6.5	6.5
QTc	430	411	434	434	385	392	431	432	400	408