Table 5: The distributions of minimum and maximum P-waves, QRS and QT in 12-lead electrocardiogram in the elderly.
|
Lead |
Frequency (%) |
|||||
|
P-Wave Max |
P-Wave Min |
QRS Max |
QRS Min |
QT Max |
QT Min |
|
|
V1 |
0 (0) |
25 (37.88) |
4 (6.06) |
3 (4.55) |
1 (1.52) |
15 (22.73) |
|
V2 |
0 (0) |
13 (19.70) |
9 (13.64) |
1 (1.52) |
8 (12.12) |
3 (4.55) |
|
V3 |
0 (0) |
2 (3.03) |
6 (9.09) |
0 (0) |
3 (4.55) |
0 (0) |
|
V4 |
1 (1.52) |
0 (0) |
1 (1.52) |
2 (3.03) |
3 (4.55) |
4 (6.06) |
|
V5 |
0 (0) |
2 (3.02) |
2 (3.03) |
2 (3.03) |
4 (6.06) |
3 (4.55) |
|
V6 |
2 (3.03) |
1 (1.52) |
3 (4.55) |
4 (6.06) |
5 (7.58) |
1 (1.52) |
|
I |
0 (0) |
8 (12.12) |
3 (4.55) |
13 (19.70) |
9 (12.64) |
11 (16.67) |
|
II |
42 (63.64) |
0 (0) |
7 (10.61) |
2 (3.03) |
12 (18.18) |
4 (6.06) |
|
III |
1 (1.52) |
2 (3.03) |
11 (16.67) |
2 (3.03) |
11 (16.67) |
3 (4.55) |
|
aVF |
4 (6.06) |
3 (4.55) |
5 (7.58) |
1 (1.52) |
6 (9.09) |
3 (4.55) |
|
aVR |
7 (10.61) |
1 (1.52) |
1 (1.52) |
24 (36.36) |
3 (4.55) |
5 (7.58) |
|
aVL |
0 (0) |
0 (0) |
5 (7.58) |
3 (4.55) |
1 (1.52) |
4 (6.06) |