?url_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Adc&rft.title=Selecting+Dual+Chamber+or+Single+Chamber+Implantable+Defibrillators%3A+What+is+the+Golden+Rule%3F%0A&rft.creator=Santini%2C+Massimo&rft.creator=Ricci%2C+Renato&rft.subject=Indian+Pacing+and+Electrophysiology+Journal&rft.description=%0A++++++++++++During+the+last+years%2C+the+implantation+rate+of+dual+chamber+defibrillators+(ICD)+significantly+increased+worldwide.+In+1999%2C+the+proportion+of+dual+chamber+ICD+implants+reached+30%25+in+Europe+and+50%25+in+U.S.A.1.+According+to+manufacturer+data%2C+in+Italy%2C+the+ratio+between+implanted+single+chamber+and+dual+chamber+units+decreased+from+1.97+in+1999+to+1.86+in+2000+and+1.50+in+2001.+Technological+progress%2C+demonstration+of+reliability+and+clinical+efficacy+of+the+new+devices%2C+combined+with+their+smaller+size%2C+contributed+to+their+wide+acceptance.+Nowadays%2C+the+matter+to+be+debated+is+if+all+the+patients+in+whom+the+atrium+can+be+sensed+and+paced+should+receive+a+dual+chamber+ICD+or+if+device+selection+should+be+individually+evaluated+according+to+different+clinical+profiles.+As+a+matter+of+fact%2C+criteria+to+identify+the+patients+who+may+benefit+more+from+dual+chamber+ICD+have+not+been+already+defined.+The+theoretical+advantages+of+dual+chamber+ICD+include%3A+improved+discrimination+between+supraventricular+and+ventricular+tachycardias%2C+optimal+treatment+of+symptomatic+bradycardias+(pre-existing%2C+drug-induced+or+late+developing)%2C+hemodynamic+and+antiarrhythmic+benefits.%0A&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=2003-10&rft.type=Journal+(Paginated)&rft.type=PeerReviewed&rft.format=text%2Fhtml&rft.identifier=http%3A%2F%2Fcogprints.org%2F4252%2F1%2Fsantini.htm&rft.identifier=++Santini%2C+Massimo+and+Ricci%2C+Renato++(2003)+Selecting+Dual+Chamber+or+Single+Chamber+Implantable+Defibrillators%3A+What+is+the+Golden+Rule%3F++%5BJournal+(Paginated)%5D+++++&rft.relation=http%3A%2F%2Fcogprints.org%2F4252%2F