Table 1 Open in new tab Evolution of...

Table 1

Evolution of P-wave indices during the course of ARVC progression

Years	−10	−5	ARVC diagnosis	5	10	15
Number of patients which had available ECGs	20	33	68	57	39	25
Number of ECGs	199	371	455	239	165	75
Overall P-wave duration (ms)	102 ± 19^*	109 ± 17	107 ± 16	108 ± 17	106 ± 19	105 ± 19
P positive amplitude in lead II (µV)	118 ± 38	119 ± 45	111 ± 36	120 ± 48	106 ± 46	102 ± 52
P area in lead V₁ (µV ms)	−3 ± 73	−9 ± 74	−1 ± 79	−30 ± 100^#	−33 ± 98	−44 ± 94
P area in lead V₂ (µV ms)	84 ± 102	81 ± 85	82 ± 62	61 ± 113	42 ± 103^#	28 ± 105
P area in lead V₆ (µV ms)	129 ± 59	128 ± 58	118 ± 52	120 ± 61	101 ± 111	103 ± 72
P frontal axis (°)	43 ± 24	42 ± 21	44 ± 21	43 ± 24	42 ± 25	36 ± 47

Years	−10	−5	ARVC diagnosis	5	10	15
Number of patients which had available ECGs	20	33	68	57	39	25
Number of ECGs	199	371	455	239	165	75
Overall P-wave duration (ms)	102 ± 19^*	109 ± 17	107 ± 16	108 ± 17	106 ± 19	105 ± 19
P positive amplitude in lead II (µV)	118 ± 38	119 ± 45	111 ± 36	120 ± 48	106 ± 46	102 ± 52
P area in lead V₁ (µV ms)	−3 ± 73	−9 ± 74	−1 ± 79	−30 ± 100^#	−33 ± 98	−44 ± 94
P area in lead V₂ (µV ms)	84 ± 102	81 ± 85	82 ± 62	61 ± 113	42 ± 103^#	28 ± 105
P area in lead V₆ (µV ms)	129 ± 59	128 ± 58	118 ± 52	120 ± 61	101 ± 111	103 ± 72
P frontal axis (°)	43 ± 24	42 ± 21	44 ± 21	43 ± 24	42 ± 25	36 ± 47

The data are presented as mean ± standard deviation, variable mean value at each time point is compared with variable mean value at ARVC diagnosis.

P value < 0.05 in comparison with value at ARVC diagnosis (paired samples t-test).

P value < 0.01 in comparison with value at ARVC diagnosis (paired samples t-test).

ARVC, arrhythmogenic right ventricular cardiomyopathy; ECG, electrocardiogram.