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Pediatric ECGs: Difference between revisions
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Left axis deviation | Left axis deviation | ||
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==Conduction== | ==Conduction: definition of LBBB and RBBB in children== | ||
RBBB: if consistent morphology and if QRS width >90ms in children < 4 years and >100ms in children 4-16 years<cite>aha</cite> | *'''RBBB''': if consistent morphology and if QRS width >90ms in children < 4 years and >100ms in children 4-16 years<cite>aha</cite> | ||
LBBB: if consistent morphology and QRS width >90ms in children < 4 years and >100ms in children 4-16 years<cite>aha</cite> | *'''LBBB''': if consistent morphology and QRS width >90ms in children < 4 years and >100ms in children 4-16 years<cite>aha</cite> | ||
==Normal neonatal ECG standards== | ==Normal neonatal ECG standards== | ||
{| class="wikitable" font-size="80%" width="100%" style="border:1px solid #E2ACB1;border-spacing:8px;" border="1" | {| class="wikitable" font-size="80%" width="100%" style="border:1px solid #E2ACB1;border-spacing:8px;" border="1" | ||
|+Normal neonatal ECG standards | |+Normal neonatal ECG standards<cite>schwarz1</cite> | ||
! style="width:70px" | Age group | ! style="width:70px" | Age group | ||
! style="width:90px" | Heart rate<br/>(beats . min<sup>-1</sup>) | ! style="width:90px" | Heart rate<br/>(beats . min<sup>-1</sup>) | ||
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{| class="wikitable" font-size="80%" width="100%" style="border:1px solid #E2ACB1;border-spacing:8px;" border="1" | {| class="wikitable" font-size="80%" width="100%" style="border:1px solid #E2ACB1;border-spacing:8px;" border="1" | ||
|+ Distinguishing tachyarrhythmias in infants | |+ Distinguishing tachyarrhythmias in infants<cite>schwarz1</cite> | ||
! style="width:80px" | | ! style="width:80px" | | ||
! style="width:200px" | Sinus tachycardia | ! style="width:200px" | Sinus tachycardia | ||
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|- | |- | ||
| valign="top" | History | | valign="top" | '''History''' | ||
| valign="top" | Sepsis, fever, hypovolaemia, etc. | | valign="top" | Sepsis, fever, hypovolaemia, etc. | ||
| valign="top" | Usually otherwise normal | | valign="top" | Usually otherwise normal | ||
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|- | |- | ||
| valign="top" | Rate | | valign="top" | '''Rate''' | ||
| valign="top" | Almost always <230 b/min | | valign="top" | Almost always <230 b/min | ||
| valign="top" | Most often 260–300 b/min | | valign="top" | Most often 260–300 b/min | ||
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|- | |- | ||
| valign="top" | R-R interval variation | | valign="top" | '''R-R interval variation''' | ||
| valign="top" | Over several seconds may get faster and slower | | valign="top" | Over several seconds may get faster and slower | ||
| valign="top" | After first 10–20 beats, extremely regular | | valign="top" | After first 10–20 beats, extremely regular | ||
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|- | |- | ||
| valign="top" | P wave axis | | valign="top" | '''P wave axis''' | ||
| valign="top" | Same as sinus almost always visible P waves | | valign="top" | Same as sinus almost always visible P waves | ||
| valign="top" | 60% visible P waves, P waves <em>do not</em> look like sinus P waves | | valign="top" | 60% visible P waves, P waves <em>do not</em> look like sinus P waves | ||
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|- | |- | ||
| valign="top" | QRS | | valign="top" | '''QRS''' | ||
| valign="top" | Almost always same as slower sinus rhythm | | valign="top" | Almost always same as slower sinus rhythm | ||
| valign="top" | After first 10–20 beats, almost always same as sinus | | valign="top" | After first 10–20 beats, almost always same as sinus | ||