室上性心动过速相关的X线影像和解剖D2

Whywouldamultielectrodecatheter,similartothatdiscussedforthecoronarysinus,beplacedalongthetricuspidannulus?

Tohelpmapandablatetypicalatrialflutter

Tohelpmapandablatearight-sidedfreewallaccessorypathway

Tohelpmapandablateanatypicalorscar-relatedatrialflutter

Tohelpmapandablatearightatrialautomatictachycardia

Alloftheabove

Answer:E-alloftheabove.

Theanatomicproximityofthecoronarysinustothemitralannulusprovidesanexcellentannularmappingposition.Thisrelationshipnotonlydefinestheanatomyoftheannulusbutallowsfairybalancedatrialandventricularelectrogramstomapretrogradeandantegradeconductionandfluttercircuitsrelatedtothemitralannulus.Thereisnoequivalentveinforthetricuspidannulusinwhichtoplaceacatheter,andthus,imagingofannulartachycardia(eg,typicalflutter,atypicalflutter,lateralscar-relatedtachycardia,rightatrialtachycardia)canbefacilitatedwithatricuspidannuluscatheter.Tomapthisregion,most

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