Table 1

Clinical details of the patients and electrocardiographic results

Case	Sex	Age (years)	AAO	HRV (sNN50)	RVDd	RVp	VSD	RVEFi	QRS	LVFS
1	F	20	12 m	15574	18	30	Small	N/A	180	26
2	M	17	3 y	9039	33	40	No	42.3	180	35
3	M	21	7 y	8410	26	30	No	39	180	30
4	M	34	17 y	1040	13	25	No	27	140	38
5	F	23	6 y	833	40	50	No	38	110	25
6	M	28	16 y	693	40	25	Small	33.5	230	16
7	M	18	2 y	7685	39	45	Small	39	160	21
8	M	18	3 y	3000	39	26	Small	47.5	200	35
9	M	23	5 y	387	34	80	No	52	140	27
10	F	18	10 m	6829	29	35	No	79	180	24
11	M	25	7 y	827	30	35	No	52	190	24
12	F	31	4 y	9771	34	22	Small	59	100	16
13	M	15	12 m	13249	31	30	No	39	180	29
14	F	27	7 y	503	32	45	No	63.8	160	34
15	F	16	10 m	10372	32	35	No	50	160	21
16	M	16	9 m	8888	30	35	No	39.3	160	25
17	M	23	3 y	1286	34	35	Small	39.5	190	40
18	M	18	2 y	1738	40	80	No	N/A	110	23
19	F	12	9 m	10933	17	38	Small	30	170	40
20	M	18	2 y	4484	33	48	No	52	190	34
21	F	17	12 m	5746	30	35	Small	38	150	25
22	F	15	3 y	1535	35	45	No	32	170	25
23	M	15	3 y	8927	26	40	Small	31	200	27
24	M	13	12 m	17952	23	25	Small	44	180	24
25	M	18	2 y	601	36	45	Small	35.3	190	41
26	F	14	2 y	10761	32	35	No	42	160	28
27	M	22	2 y	9724	29	35	No	62.3	160	35
28	M	14	2 y	4658	30	45	No	37.5	160	27

AAO, age at surgical repair; HRV, heart rate variability; LVFS, left ventricular fractional shortening; m, months; N/A, not available; QRS, maximum QRS duration on a standard 12 lead ECG; RVDd, right ventriculsr dimension in diastole in mm; RVEFi, right ventricular ejection fraction by radionuclide ventriculography; RVp, right ventricular systolic pressure in mm Hg; sNN50, number of consecutive RR intervals > 50 ms on a 24 hour ECG; VSD, residual ventricular septal defect; y, years.