Age-related changes in P wave morphology in healthy subjects

Table 2 P wave parameter and morphology data

	P wave duration	X max position	X max amplitude	Y max position	Y max amplitude
All	123 ± 12	65 ± 10	51 ± 15	60 ± 10	80 ± 30
Men	127 ± 11	67 ± 10	51 ± 10	60 ± 8	74 ± 21
Women	121 ± 12	64 ± 10	52 ± 18	59 ± 10	87 ± 35
P-value	0,004	0,19	0,85	0,57	0,05
20–29 yrs	117 ± 12	63 ± 10	40 ± 9	53 ± 8	59 ± 27
30–39 yrs	117 ± 11	63 ± 10	50 ± 12	57 ± 11	85 ± 29
40–49 yrs	121 ± 13	64 ± 9	52 ± 12	61 ± 8	95 ± 26
50–59 yrs	120 ± 13	69 ± 7	68 ± 22	66 ± 9	114 ± 50
60–69 yrs	123 ± 15	62 ± 16	51 ± 23	59 ± 12	92 ± 29
70 < yrs	125 ± 9	64 ± 6	53 ± 15	59 ± 11	77 ± 18
P-value	0,02	0,57	0,07	0,21	0,37
	Z min position	Z min amplitude	Z zero position	Z max position	Z max amplitude	P wave morphology
All	41 ± 7	-30 ± 10	65 ± 13	86 ± 15	20 ± 10	45/73/2
Men	43 ± 7	-32 ± 11	65 ± 12	89 ± 15	25 ± 10	18/42/0
Women	39 ± 6	-29 ± 9	64 ± 13	85 ± 15	19 ± 11	27/31/2
P-value	0,004	0,09	0,26	0,10	0,003	0,001
20–29 yrs	42 ± 5	-26 ± 7	72 ± 11	87 ± 17	9 ± 5	12/8/0
30–39 yrs	40 ± 4	-31 ± 10	64 ± 10	85 ± 16	16 ± 11	10/10/0
40–49 yrs	38 ± 8	-27 ± 10	67 ± 22	82 ± 22	18 ± 11	12/8/0
50–59 yrs	38 ± 6	-29 ± 11	57 ± 8	79 ± 6	22 ± 10	1/18/1
60–69 yrs	36 ± 5	-29 ± 6	60 ± 9	92 ± 15	21 ± 9	5/14/1
70 < yrs	41 ± 6	-33 ± 9	63 ± 13	84 ± 6	26 ± 12	2/18/0
P-value	0,18	0,59	0,02	0,35	< 0,001	< 0,001

P wave parameter data is provided above. All positions and P wave duration (PWD) are expressed as [ms] and all amplitudes as [μV]. In the column "P wave morphology", the distribution of different P wave morphology types is provided (Type 1/Type 2/Atypical).

ISSN: 1471-2261