Late potentials: Difference between revisions
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Late potentials are thought to be caused by early afterdepolarizations of cells in the right ventricle (in [[ARVD]]). Their amplitude is often too small to show up on a normal ECG. However, when multiple QRS recordings (typically 250 consecutive QRS complexes) are averaged, random noise is filtered out and late potentials can show up. | Late potentials are thought to be caused by early afterdepolarizations of cells in the right ventricle (in [[ARVD]]). Their amplitude is often too small to show up on a normal ECG. However, when multiple QRS recordings (typically 250 consecutive QRS complexes) are averaged, random noise is filtered out and late potentials can show up. | ||
[[Image:late_potentials. | [[Image:late_potentials.png|thumb]] | ||
{| class="wikitable" | {| class="wikitable" | ||
! Criteria for late potentials on a signal averaged ECG <cite>simson</cite><cite>Breithardt</cite> | ! Criteria for late potentials on a signal averaged ECG <cite>simson</cite><cite>Breithardt</cite> | ||
Revision as of 22:20, 22 January 2008
Late potentials are thought to be caused by early afterdepolarizations of cells in the right ventricle (in ARVD). Their amplitude is often too small to show up on a normal ECG. However, when multiple QRS recordings (typically 250 consecutive QRS complexes) are averaged, random noise is filtered out and late potentials can show up.
| Criteria for late potentials on a signal averaged ECG simsonBreithardt |
|---|
|
References
<biblio>
- simson pmid=7249291
- Breithardt pmid=2007727
</biblio>