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Ventricular pre-excitation (Wolff-Parkinson-White pattern): Difference between revisions
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Ventricular pre-excitation (Wolff-Parkinson-White pattern) (view source)
Revision as of 17:15, 18 December 2012
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[[Image:Rhythm_WPW.png|thumb| The upstroke of the QRS-complex is 'slurred', resulting in a delta-wave (arrow).]] | [[Image:Rhythm_WPW.png|thumb| The upstroke of the QRS-complex is 'slurred', resulting in a delta-wave (arrow).]] | ||
[[Image:wpw2.svg|thumb|Conduction through the accessory pathway results in a delta wave.]] | [[Image:wpw2.svg|thumb|Conduction through the accessory pathway results in a delta wave.]] | ||
[[Image: | [[Image:OCT_ACT.svg|thumb| A atrioventricular tachycardia through the accessory bundle. The electrical signal travels from the ventricles via the accessory bundle to the atria and returns to the ventricles via the AV node.]] | ||
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== Determining the location of the accessory pathway == | == Determining the location of the accessory pathway == | ||
By closely observing the shape of the delta wave on the ECG, the location of the accessory connection can often be estimated. Several algorithms have been developed for this | By closely observing the shape of the delta wave on the ECG, the location of the accessory connection can often be estimated. Several algorithms have been developed for this purpose.<cite>Milstein</cite> | ||
[[Image:Pathway_nomenclature.png|thumb|left|300px|Seen from the apex, the tricuspid and mitral valve form a plane, relative to which the accessory connections are named.<cite>cosio</cite>]] | [[Image:Pathway_nomenclature.png|thumb|left|300px|Seen from the apex, the tricuspid and mitral valve form a plane, relative to which the accessory connections are named.<cite>cosio</cite>]] | ||
[[Image:Pathway_prevalence.png|thumb|right|300px|Large differences in prevalence of accessory bundle location]] | [[Image:Pathway_prevalence.png|thumb|right|300px|Large differences in prevalence of accessory bundle location]] | ||