?url_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Adc&rft.title=Excerpts+from+Electrophysiology+Sessions+at+the+European+Society+of+Cardiology+Congress+2002+-+Berlin&rft.creator=Nabar%2C+Ashish&rft.subject=Indian+Pacing+and+Electrophysiology+Journal&rft.description=Administration+of+adenosine+triphosphate+(ATP)+in+sinus+rhythm+identifies+dual+atrioventricular+node+physiology+(DAVNP)+in+75%25+of+patients+with+inducible+slow+%2F+fast+AV+nodal+reentrant+tachycardia+(AVNRT).+The+incidence+of+DAVNP+following+termination+of+AVNRT+with+ATP+is+unknown.+Incremental+doses+of+ATP+(10-60mg)+were+administered%2C+first+in+sinus+rhythm+and+then+during+tachycardia+induced+at+electrophysiologic+study%2C+to+84+patients+with+inducible+AVNRT+and+to+18+control+patients+with+inducible+AV+reentrant+tachycardia+(AVRT)+and+no+electrophysiologic+evidence+of+DAVNP.+Study+end-points+were+the+occurrence+of+DAVNP+or+%3E+2nd+degree+AV+block+following+administration+of+ATP+in+sinus+rhythm+and+tachycardia+termination+following+administration+of+ATP+during+tachycardia.+Of+the+82+patients+with+AVNRT+who+completed+the+study%2C+62+(75.6%25)+exhibited+DAVNP+following+administration+of+17.1+%2B+9.4+mg+ATP+in+sinus+rhythm%2C+while+30+(36.5%25)+exhibited+DAVNP+at+the+termination+of+AVNRT+following+administration+of+10.6+%2B+2.4+mg+ATP.+The+occurrence+of+DAVNP+following+the+administration+of+10+mg+ATP+in+sinus+rhythm.was+a+good+predictor+(62%25)+of+its+occurrence+after+termination+of+AVNRT+with+ATP.+The+dose+of+ATP+had+a+strong+correlation+between+the+presence+of+DAVNP+following+AVNRT+termination+and+the+ATP+doses+needed+for+tachycardia+termination.+Of+the+18+control+patients%2C+none+had+DAVNP+at+ATP+test+during+sinus+rhythm+but+1+(5.5%25)+showed+slight+(60+msec)+PR+jump+after+termination+of+AVRT+with+ATP.+In+conclusion%2C+DAVNP+is+present+in+a+relatively+high+proportion+(36.5%25)+of+patients+following+termination+of+AVNRT+with+ATP+but+is+much+less+frequent+(5.5%25)+in+control+patients.+Thus%2C+findings+at+termination+of+tachycardia+by+ATP+may+be+useful+in+the+noninvasive+diagnosis+of+the+mechanism+of+a+paroxysmal+supraventricular+tachycardia.+&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=2003-01&rft.type=Journal+(Paginated)&rft.type=PeerReviewed&rft.format=text%2Fhtml&rft.identifier=http%3A%2F%2Fcogprints.org%2F4295%2F1%2Fnabar3.htm&rft.identifier=++Nabar%2C+Ashish++(2003)+Excerpts+from+Electrophysiology+Sessions+at+the+European+Society+of+Cardiology+Congress+2002+-+Berlin.++%5BJournal+(Paginated)%5D+++++&rft.relation=http%3A%2F%2Fcogprints.org%2F4295%2F