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Clinical Disorders: Difference between revisions
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* No delta wave | * No delta wave | ||
==Ebstein== | ==Ebstein== | ||
[[File:E000403.jpg|thumb|ECG from a patient with Ebstein's anomaly showing huge P waves and low amplitude QRS waves. RBBB and T wave inversion are not present on this ECG.]] | |||
In Ebstein anomaly the tricuspid valve is inserted more apically than normal. This yields a very large right atrium. About 50% of individuals with Ebstein's anomaly have evidence of Wolff-Parkinson-White syndrome, secondary to the atrialized right ventricular tissue. | In Ebstein anomaly the tricuspid valve is inserted more apically than normal. This yields a very large right atrium. About 50% of individuals with Ebstein's anomaly have evidence of Wolff-Parkinson-White syndrome, secondary to the atrialized right ventricular tissue. | ||
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#T wave inversion in V1-V4 and Q waves in V1-V4 and II, III and aVF. | #T wave inversion in V1-V4 and Q waves in V1-V4 and II, III and aVF. | ||
#Q waves in II, III, AVF. These Q waves are thought to reflect fibrotic thinning of the right ventricular free wall and/or septal fibrosis with coexisting left posterior hemiblock<cite>khairy</cite> | #Q waves in II, III, AVF. These Q waves are thought to reflect fibrotic thinning of the right ventricular free wall and/or septal fibrosis with coexisting left posterior hemiblock<cite>khairy</cite> | ||
{{clr}}} | |||
==Left and right bundle branch block== | ==Left and right bundle branch block== | ||
See: [[Conduction_delay|Conduction delay]] | See: [[Conduction_delay|Conduction delay]] | ||