?url_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Adc&rft.title=Arrhythmia+Diagnosis+Following+an+ICD+Shock%3A+Reply+&rft.creator=John%2C+Roy+M.&rft.subject=Indian+Pacing+and+Electrophysiology+Journal&rft.description=Dr.+Levine's+comments1+are+greatly+appreciated.+Most+modern+ICDs+have+arrhythmia+discrimination+algorithms+that+have+variable+success+in+withholding+inappropriate+therapy.+It+must+be+borne+in+mind+that+enhancing+specificity+for+ventricular+arrhythmia+detection+can+entail+a+loss+of%0Asensitivity.+Accordingly%2C+all+algorithms+necessarily+err+on+the+side+of+safety+and+will+withhold+therapy+for+only+brief+period+of+time.+A+persistent+high+rate+will+eventually+be+treated+as+a+ventricular+arrhythmia+and+can+result+in+unnecessary+and+repetetive+shocks.+Hence+the+importance+of+aggressive+management+of+supraventricular+arrhythmias+in+these+patients+cannot+be+overemphasized.&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=2002-01&rft.type=Journal+(Paginated)&rft.type=PeerReviewed&rft.format=text%2Fhtml&rft.identifier=http%3A%2F%2Fcogprints.org%2F4326%2F1%2Fjohn.htm&rft.identifier=++John%2C+Roy+M.++(2002)+Arrhythmia+Diagnosis+Following+an+ICD+Shock%3A+Reply.++%5BJournal+(Paginated)%5D+++++&rft.relation=http%3A%2F%2Fcogprints.org%2F4326%2F