The ratio stays little changed after birth, then increases from age 1 month, then continues to increase forward until age 13–18 years... The sum of R wave amplitude in lead V3 and S wave
Trang 1P1: FAW/SPH P2: FAW/SPH QC: FAW/SPH T1: FAW
BLUK054-Lue June 19, 2006 13:48
CHAPTER 4.12
R/S amplitude ratio by age in lead V6
-5
0 5 10
15
20
25
30
35
0-1 1-3 3-7 7-30 1-3 3-6 6-12 1-3 3-6 6-9 9-13 13-18
95%
75%
50%
25%
5%
Age, years Age, months
Age, days
Figure 4.12 R/S amplitude ratio by age in lead V6, each curve corresponding to the indicated percentile level ( • = mean) The progress of R/S amplitude ratio in lead V6 is striking.
The ratio stays little changed after birth, then increases from age 1 month, then continues to increase forward until age 13–18 years
95% 8.69 11.60 5.21 7.48 12.35 20.03 17.29 19.50 23.00 27.86 31.67 32.17
Mean 3.06 2.97 2.42 2.98 5.16 6.69 5.85 8.93 9.27 11.35 11.00 11.66 (±SD) 8.34 4.21 3.77 4.25 4.19 6.43 5.59 11.62 11.92 16.37 13.29 19.18
5% 0.29 0.52 0.57 0.56 0.90 1.75 1.39 2.21 0.21 2.20 −1.00 1.27
Trang 2R amplitude in lead V3 + S amplitude in lead V3 by age
0.00 0.50 1.00 1.50 2.00 2.50 3.00 3.50 4.00 4.50 5.00
0-1 1-3 3-7 7-30 1-3 3-6 6-12 1-3 3-6 6-9 9-13 13-18
95%
75%
50%
25%
5%
Figure 4.13 R amplitude in lead V3+ S amplitude in lead V3 by age, each curve
corresponding to the indicated percentile level ( • = mean) The sum of R wave amplitude
in lead V3 and S wave amplitude in V3 decreases slightly after birth It increases after age 7–30 days, reaching the highest value at ages 3–6 months and 1–3 years, then decreases thereafter up to age 13–18 years
95% 4.32 4.13 3.77 3.28 3.54 4.38 4.00 3.82 4.28 3.88 3.65 3.10
Mean 2.91 2.81 2.77 2.38 2.55 2.99 2.80 2.95 2.8 2.7 1.99 1.59 (±SD) 0.91 0.81 0.67 0.62 0.60 0.79 0.85 0.65 0.90 0.71 0.95 0.81
5% 1.55 1.50 1.83 1.53 1.69 1.83 1.47 1.83 1.51 1.69 0.56 0.55
Trang 3P1: FAW/SPH P2: FAW/SPH QC: FAW/SPH T1: FAW
BLUK054-Lue June 19, 2006 13:48
CHAPTER 4.14
lead V1 by age
0.00
0.50
1.00
1.50
2.00
2.50
3.00
3.50
0-1 1-3 3-7 7-30 1-3 3-6 6-12 1-3 3-6 6-9 9-13 13-18
95%
75%
50%
25%
5%
Age, years Age, months
Age, days
Figure 4.14 R amplitude in lead V6 + S amplitude in Lead V1 by age, each curve
corresponding to the indicated percentile level (• = mean) The sum of R wave amplitude in
V6 and S wave amplitude in V1 stays almost unchanged in the first week of life From that age forward, it increases rapidly to age 3–6 months, then gradually up to age 6–9 years, followed by a decrease up to 13–18 years of age
95% 1.60 1.47 1.58 1.66 2.08 2.45 2.43 2.70 2.98 3.32 3.19 3.08
Mean 0.96 0.91 0.92 0.94 1.27 1.63 1.68 1.84 2.01 2.25 2.1 2.00 (±SD) 0.43 0.35 0.39 0.37 0.49 0.47 0.50 0.49 0.58 0.71 0.61 0.63
5% 0.33 0.37 0.43 0.41 0.56 0.99 0.90 1.10 1.04 1.26 1.20 1.09
Trang 4R amplitude in lead V6 + S amplitude in lead V2 by age
0.00 0.50 1.00 1.50 2.00 2.50 3.00 3.50 4.00 4.50
0-1 1-3 3-7 7-30 1-3 3-6 6-12 1-3 3-6 6-9 9-13 13-18
95%
75%
50%
25%
5%
Age, years Age, months
Age, days
Figure 4.15 R amplitude in lead V6 + S amplitude in lead V2 by age, each curve
corresponding to the indicated percentile level ( • = mean) The sum of R wave amplitude in
lead V6 and S wave amplitude in lead V2 decreases slightly from birth to 7 days of age From that age forward, it increases gradually from age 1–3 years until age 6–9 years, followed by a decrease thereafter
95% 3.46 3.43 2.89 2.85 3.06 3.32 3.79 3.55 3.98 4.17 3.95 3.89
Mean 2.26 2.2 1.91 1.94 2.06 2.37 2.57 2.52 2.7 2.82 2.68 2.55 (±SD) 0.75 0.75 0.55 0.55 0.59 0.62 0.73 0.65 0.63 0.77 0.69 0.79
5% 0.96 0.93 1.08 1.08 1.20 1.27 1.50 1.51 1.76 1.83 1.62 1.43
Trang 5P1: FAW/SPH P2: FAW/SPH QC: FAW/SPH T1: FAW
BLUK054-Lue June 19, 2006 13:48
CHAPTER 4.16
Ventricular activation time by age in
lead I
0
5
10
15
20
25
30
35
40
45
50
0-1 1-3 3-7 7-30 1-3 3-6 6-12 1-3 3-6 6-9 9-13 13-18
95%
75%
50%
25%
5%
Age, years Age, months
Age, days
Figure 4.16 Ventricular activation time by age in lead I, each curve corresponding to the indicated percentile level ( • = mean) The ventricular activation time recorded in lead I
becomes longer with increasing age, more strikingly during infancy and adolescence
(±SD) 5.33 5.77 3.87 4.86 4.72 5.45 6.00 5.42 5.28 10.20 8.67 8.26
Trang 6Ventricular activation time by age in
lead II
0 5 10 15 20 25 30 35 40 45 50
0-1 1-3 3-7 7-30 1-3 3-6 6-12 1-3 3-6 6-9 9-13 13-18
Age, years Age, months
Age, days
95%
75%
50%
25%
5%
Figure 4.17 Ventricular activation time by age in lead II, each curve corresponding to the indicated percentile level ( • = mean) The ventricular activation time registered in lead II
becomes longer gradually and steadily with increasing age from birth to adolescence
(±SD) 5.33 5.77 5.44 5.00 5.59 6.94 7.05 5.42 5.28 5.10 8.67 7.11
Trang 7P1: FAW/SPH P2: FAW/SPH QC: FAW/SPH T1: FAW
BLUK054-Lue June 19, 2006 13:48
CHAPTER 4.18
Ventricular activation time by age in
lead III
0
10
20
30
40
50
60
0-1 1-3 3-7 7-30 1-3 3-6 6-12 1-3 3-6 6-9 9-13 13-18
95%
75%
50%
25%
5%
Figure 4.18 Ventricular Activation time by age in lead III, each curve corresponding to the indicated percentile level ( • = mean) The ventricular activation time recorded in lead III
becomes longer, but not as strikingly as in lead II
(±SD) 5.33 5.77 6.95 6.38 7.23 9.83 11.76 10.85 10.56 10.20 8.67 10.26
Trang 8Ventricular activation time by age in
lead aVR
-10 0 10 20 30 40 50 60 70
0-1 1-3 3-7 7-30 1-3 3-6 6-12 1-3 3-6 6-9 9-13 13-18
95%
75%
50%
25%
5%
Figure 4.19 Ventricular activation time by age in lead aVR, each curve corresponding to the indicated percentile level ( • = mean) Ventricular activation time recorded in lead aVR becomes
longer with a wider range along with increasing age
(±SD) 10.65 11.54 12.15 13.82 14.46 15.47 16.31 16.27 21.11 20.41 26.02 24.61
Trang 9P1: FAW/SPH P2: FAW/SPH QC: FAW/SPH T1: FAW
BLUK054-Lue June 19, 2006 13:48
CHAPTER 4.20
Ventricular activation time by age in
lead aVL
-10
0
10
20
30
40
50
60
0-1 1-3 3-7 7-30 1-3 3-6 6-12 1-3 3-6 6-9 9-13 13-18
95%
75%
50%
25%
5%
Age, years Age, months
Age, days
Figure 4.20 Ventricular activation time by age in lead aVL, each curve corresponding to the indicated percentile level ( • = mean) The ventricular activation time interval increases with a
wider range from birth to adolescence, particularly during late adolescence
(±SD) 10.65 5.77 6.68 4.96 6.35 7.54 6.73 10.85 10.56 10.20 17.35 15.37
Trang 10Ventricular activation time by age in
lead aVF
0 5 10 15 20 25 30 35 40 45 50
0-1 1-3 3-7 7-30 1-3 3-6 6-12 1-3 3-6 6-9 9-13 13-18
95%
75%
50%
25%
5%
Figure 4.21 Ventricular activation time by age in lead aVF, each curve corresponding to the indicated percentile level (• = mean) The lengthening of ventricular activation time recorded in
aVF is gradual and steady during aging from birth to adolescence
(±SD) 5.33 5.77 5.77 5.79 5.37 7.17 7.96 5.42 5.28 5.10 8.67 7.30