?url_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Adc&rft.title=Arrhythmogenicity+of+the+Coronary+Sinus%0A&rft.creator=Katritsis%2C+Demosthenes+G&rft.subject=Indian+Pacing+and+Electrophysiology+Journal&rft.description=The+coronary+sinus+(CS)+is+the+cardiac+venous+system+that+begins+at+its+ostium+in+the+right+atrium+and+ends+at+the+origin+of+the+great+cardiac+vein.+The+major+tributaries+of+the+CS+include+the+great+cardiac+vein+(anterior+cardiac+vein)%2C+the+left+obtuse+marginal+vein%2C+the+posterior+(or+inferior)+left+ventricular+vein%2C+the+middle+cardiac+vein%2C+and+the+right+coronary+vein.+In+addition%2C+atrial+veins+and%2C+notably%2C+the+vein+of+Marshall+(or+oblique+left+atrial+vein)+also+enter+the+coronary+sinus.+From+the+perspective+of+electrophysiologists%2C+the+CS+represents+an+anatomical+structure+of+particular+interest.+First%2C+it+provides+access+to+epicardial+atrioventricular+pathways+and+arrhythmogenic+foci+of+both+atrial6+and+ventricular+arrhythmia.+Second%2C+it+represents+by+itself+a+potential+source+of+atrial+arrhythmia.+The+arrhythmogenic+potential+of+the+thoracic+veins+in+general+has+been+recognised+since+the+1970s.+Atrial+arrhythmias+can+originate+in+the+pulmonary+veins%2C+the+superior+vena+cava%2C+and+the+CS.+Indeed%2C+biatrial+flutter%2Cleft+atrial+tachycardia%2C+and+atrial+fibrillation%2C+involving+the+distal+CS+have+been+well+described.+There+is+now+evidence+that+the+CS+apart+from+participating+in+arrhythmia+circuits%2C+such+as+in+the+slow-slow+form+of+atrioventricular+nodal+reentrant+tachycardia+and+atrioventricular+reentrant+tachycardia+due+to+accessory+pathways%2Cmay+itself+be+a+source+of+apparently+atrial+arrhythmia.+In+patients+with+paroxysmal+atrial+fibrillation+apparently+originating+from+the+left+superior+or+inferior+pulmonary+vein%2C+detailed+epicardial+mapping+through+the+distal+coronary+sinus+might+identify+epicardial+location+of+the+arrhythmogenic+focus.+Therefore%2C+the+search+for+foci+of+abnormal+automaticity+within+the+CS+should+be+part+of+the+electrophysiologic+evaluation+of+left+atrial+arrhythmias.&rft.publisher=Indian+Pacing+and+Electrophysiology+Group&rft.contributor=Singh%2C+Balbir&rft.contributor=Lokhandwala%2C+Yash&rft.contributor=Francis%2C+Johnson&rft.contributor=Gupta%2C+Anup&rft.date=2004-10&rft.type=Journal+(Paginated)&rft.type=PeerReviewed&rft.format=application%2Fpdf&rft.identifier=http%3A%2F%2Fcogprints.org%2F4182%2F1%2Fkatritsis.pdf&rft.identifier=++Katritsis%2C+Demosthenes+G++(2004)+Arrhythmogenicity+of+the+Coronary+Sinus.++%5BJournal+(Paginated)%5D+++++&rft.relation=http%3A%2F%2Fcogprints.org%2F4182%2F