?url_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Adc&rft.title=Idiopathic+Epicardial+Ventricular+Arrhythmias%3A+Diagnosis+and+Ablation+Technique+from+the+Aortic+Sinus+of+Valsalva%0A&rft.creator=Tada%2C+Hiroshi&rft.subject=Indian+Pacing+and+Electrophysiology+Journal&rft.description=Idiopathic+outflow+tract+arrhythmias+(ventricular+tachycardias+or+symptomatic+premature+ventricular+contractions%3B+OT-VT%2FPVCs)+can+originate+from+the+left+ventricular+(LV)+epicardium+(Epi-VT%2FPVCs)%2C+and+radiofrequency+(RF)+energy+applications+from+the+aortic+sinus+of+Valsalva+can+eliminate+Epi-VT%2FPVCs+in+selected+patients.++%0A++++++++++++Among+the+various+ECG+findings%2C+the+R-wave+duration+index+and+R%2FS+amplitude+index+in+leads+V1+or+V2+are+useful+for+identifying+Epi-VT%2FPVCs%2C+and+the+Q-wave+ratio+of+leads+aVL+to+aVR+and+S-wave+amplitude+in+lead+V1+are+useful+for+differentiating+between+an+Epi-VT%2FPVC+originating+from+the+LV+epicardium+remote+from+the+left+sinus+of+Valsalva+(LSV)+and+that+from+the+LSV.++Tissue+tracking+imaging+is+a+promising+modality+for+identifying+the+origin+of+OT-VT%2FPVCs+and+for+differentiating+between+an+Epi-VT%2FPVC+originating+from+the+LV+epicardium+remote+from+the+LSV+and+that+from+the+LSV.++%0A%0A++++++++++++If+the+origin+of+the+Epi-VT%2FPVC+is+identified+within+the+LSV%2C+coronary+and+aortic+angiography+should+be+performed+to+assess+the+anatomic+relationships+between+the+Epi-VT%2FPVC+origin+and+coronary+arteries+and+aortic+valve+before+the+RF+energy+delivery.++To+avoid+potential+complications%2C+RF+ablation+should+be+performed+at+the+LSV+using+a+maximum+power+of+35+watts+and+maximum+temperature+of+55%C2%B0C.++Epicardial+mapping+through+the+coronary+venous+system+and+the+presence+of+potentials+recorded+from+the+ablation+site+within+the+LSV+and+their+changes+before+and+after+the+RF+energy+applications+may+be+useful+for+diagnosing+Epi-VT%2FPVCs+or+predicting+a+successful+catheter+ablation+from+the+LSV.+%0A%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=2005-04&rft.type=Journal+(Paginated)&rft.type=PeerReviewed&rft.format=text%2Fhtml&rft.identifier=http%3A%2F%2Fcogprints.org%2F4222%2F1%2Ftada.htm&rft.format=application%2Fpdf&rft.identifier=http%3A%2F%2Fcogprints.org%2F4222%2F2%2Ftada.pdf&rft.identifier=++Tada%2C+Hiroshi++(2005)+Idiopathic+Epicardial+Ventricular+Arrhythmias%3A+Diagnosis+and+Ablation+Technique+from+the+Aortic+Sinus+of+Valsalva.++%5BJournal+(Paginated)%5D+++++&rft.relation=http%3A%2F%2Fcogprints.org%2F4222%2F