?url_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Adc&rft.title=Frequency+Analysis+of+Atrial+Fibrillation+From+the+Surface+Electrocardiogram&rft.creator=Husser%2C+Daniela&rft.creator=Stridh%2C+Martin&rft.creator=Sornmo%2C+Leif&rft.creator=Olsson%2C+Bertil&rft.creator=Bollmann%2C+Andreas&rft.subject=Indian+Pacing+and+Electrophysiology+Journal&rft.description=Atrial+fibrillation+(AF)+is+the+most+common+arrhythmia+encountered+in+clinical+practice.+Neither+the+natural+history+of+AF+nor+its+response+to+therapy+are+sufficiently+predictable+by+clinical+and+echocardiographic+parameters.+%0A++++++++++++Atrial+fibrillatory+frequency+(or+rate)+can+reliably+be+assessed+from+the+surface+electrocardiogram+(ECG)+using+digital+signal+processing+(filtering%2C+subtraction+of+averaged+QRST+complexes%2C+and+power+spectral+analysis)+and+shows+large+inter-individual+variability.+This+measurement+correlates+well+with+intraatrial+cycle+length%2C+a+parameter+which+appears+to+have+primary+importance+in+AF+domestication+and+response+to+therapy.+AF+with+a+low+fibrillatory+rate+is+more+likely+to+terminate+spontaneously%2C+and+responds+better+to+antiarrhythmic+drugs+or+cardioversion+while+high+rate+AF+is+more+often+persistent+and+refractory+to+therapy.+%0A++++++++++++In+conclusion%2C+frequency+analysis+of+AF+seems+to+be+useful+for+non-invasive+assessment+of+electrical+remodeling+in+AF+and+may+subsequently+be+helpful+for+guiding+AF+therapy.%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=2004-07&rft.type=Journal+(Paginated)&rft.type=PeerReviewed&rft.format=text%2Fhtml&rft.identifier=http%3A%2F%2Fcogprints.org%2F4193%2F1%2Fbollmann.htm&rft.format=application%2Fpdf&rft.identifier=http%3A%2F%2Fcogprints.org%2F4193%2F2%2Fbollmann.pdf&rft.identifier=++Husser%2C+Daniela+and+Stridh%2C+Martin+and+Sornmo%2C+Leif+and+Olsson%2C+Bertil+and+Bollmann%2C+Andreas++(2004)+Frequency+Analysis+of+Atrial+Fibrillation+From+the+Surface+Electrocardiogram.++%5BJournal+(Paginated)%5D+++++&rft.relation=http%3A%2F%2Fcogprints.org%2F4193%2F