Pediatric ECGs: Difference between revisions
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! style="width:40px" | RV<sub>1</sub><sup>b</sup> (mm) | ! style="width:40px" | RV<sub>1</sub><sup>b</sup> (mm) | ||
! style="width:40px" | SV<sub>1</sub><sup>b</sup> (mm) | ! style="width:40px" | SV<sub>1</sub><sup>b</sup> (mm) | ||
!R/S V<sub>1</sub><sup>c</sup> | ! style="width:50px" | R/S V<sub>1</sub><sup>c</sup> | ||
! style="width:40px" | RV<sub>6</sub><sup>b</sup> (mm) | ! style="width:40px" | RV<sub>6</sub><sup>b</sup> (mm) | ||
! style="width:40px" | SV<sub>6</sub><sup>b</sup> (mm) | ! style="width:40px" | SV<sub>6</sub><sup>b</sup> (mm) | ||
!R/S V<sub>6</sub><sup>c</sup> | ! style="width:50px" | R/S V<sub>6</sub><sup>c</sup> | ||
!SV<sub>1</sub> + RV<sub>6</sub><sup>c</sup> (mm) | ! style="width:70px" | SV<sub>1</sub> + RV<sub>6</sub><sup>c</sup> (mm) | ||
!R + SV<sub>4</sub><sup>c</sup> (mm) | ! style="width:70px" | R + SV<sub>4</sub><sup>c</sup> (mm) | ||
|- | |- | ||
|0–1 days | |0–1 days | ||
Revision as of 13:41, 25 June 2010
A excellent description of the neonatal electrocardiogram has been made by Schwarz et al.[1][2]
Heart Axis
| Age | QRS Axis Normal Values | Abnormal Values | Description | ||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Adult | -30° to 90° |
|
| ||||||||||
| 8 to 16 years | 0° to 120° | >120° | Right-axis deviation | ||||||||||
| 5 to 8 years | 0° to 140° | >140°
<0° |
Right-axis deviation
Left-axis deviation | ||||||||||
| 1 year to 5 years | 5° to 100° | >100° | Right-axis deviation | ||||||||||
| 1 mo to 1 y | 10° to 120° | >120°
<10° to -90° |
Right-axis deviation
Left-axis deviation | ||||||||||
| Neonate | 30° to 90° | >190° to -90°
<30° to <-90° |
Extreme right axis deviation
Left axis deviation |
Conduction
RBBB: if consistent morphology and if QRS width >90ms in children < 4 years and >100ms in children 4-16 years[3] LBBB: if consistent morphology and QRS width >90ms in children < 4 years and >100ms in children 4-16 years[3]
Normal neonatal ECG standards
| Age group | Heart rate (beats . min-1) |
Frontal plane QRS axisa (degrees) |
P wave amplitude (mm) |
P-R intervala (s) |
QRS durationa V5 |
Q IIIc (mm) | QV6c (mm) | RV1b (mm) | SV1b (mm) | R/S V1c | RV6b (mm) | SV6b (mm) | R/S V6c | SV1 + RV6c (mm) | R + SV4c (mm) |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 0–1 days | 93–154 (123) | +59 to +192 (135) | 2·8 | 0·08–0·16 (0·11) | 0·02–0·08 (0·05) | 5·2 | 1·7 | 5–26 | 0–22·5 | 9·8 | 0–11 | 0–9·8 | 10 | 28 | 52 |
| 1-3 days | |||||||||||||||
| 3-7 days | |||||||||||||||
| 7-30 days | |||||||||||||||
| 1-3 months |
References
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Error fetching PMID 12269267:
Error fetching PMID 12739597:
- Error fetching PMID 12269267:
- Error fetching PMID 12739597:
- Error fetching PMID 19228822: