Signal-averaged electrocardiogram. Improved identification of patients with ventricular tachycardia using a 28-lead optimal array

Circulation
D S HoD A Richards

Abstract

Although the signal-averaged ECG (SAECG) is currently the best noninvasive test to identify patients with ventricular tachycardia (VT) following myocardial infarction (MI), it is still a relatively insensitive test. Body surface mapping has improved the sensitivity of ECG in detecting various cardiac diseases. This study applied body surface mapping to the SAECG in the form of a clinically practical, 28-lead optimal array and compared its sensitivity and specificity with those of an orthogonal array. Two hundred twenty-three patients with previous MI (82 with inducible VT) underwent SAECG using 28 surface electrodes from which were obtained a three-lead orthogonal array and a 28-lead optimal array (optimal). From the orthogonal array, two QRS durations (QRSd) were obtained using the combined vector magnitude method (CVM) and the earliest onset to latest offset of the three individually filtered leads (individual). From the optimal array, 28 QRSd were obtained, each defined as the duration from the earliest onset of any of the 28 leads to the offset of each individually filtered lead. QRSd > 120 msec in > or = 3 leads was considered abnormal. For CVM and individual, QRSd of > 120 msec were considered abnormal. While the specific...Continue Reading

References

May 1, 1978·IEEE Transactions on Bio-medical Engineering·R L LuxJ A Abildskov
Sep 1, 1978·The American Journal of Cardiology·M E JosephsonA M Greenspan
Nov 4, 1976·The American Journal of Cardiology·N C FlowersJ C Johnson
Oct 7, 1989·Lancet·T R CrippsD E Ward
Jul 1, 1989·The American Journal of Cardiology·T OheK Shimomura
Mar 1, 1989·The American Journal of Cardiology·J S Steinberg, J T Bigger
Apr 1, 1989·The American Journal of Cardiology·T A BuckinghamH L Kennedy
Dec 1, 1987·The American Journal of Cardiology·J A GomesP Barreca
Jul 1, 1986·Journal of Biomedical Engineering·A R DennissJ B Uther
Apr 1, 1985·American Heart Journal·M ZimmermannJ Richez
Mar 1, 1971·IEEE Transactions on Bio-medical Engineering·R C BarrG S Herman-Giddens

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Citations

May 1, 1995·Clinical Cardiology·L S Green, J A Abildskov
Nov 1, 1996·Journal of the American College of Cardiology·D S HoD L Ross
Apr 1, 1996·Journal of Cardiovascular Pharmacology·A C WiesfeldK I Lie
Oct 17, 2001·Journal of Cardiovascular Pharmacology·T YangD M Roden
Sep 10, 2003·Journal of Cardiovascular Pharmacology·Long-Mei WuMasayasu Hiraoka
Feb 1, 1997·Pacing and Clinical Electrophysiology : PACE·T YamadaN Hoki
Mar 10, 2000·Journal of Cardiovascular Electrophysiology·N G KaveshM R Gold
Apr 24, 2007·Heart, Lung & Circulation·A Robert Denniss, David A B Richards
May 28, 2009·Circulation·Charles J Bruce, Heidi M Connolly
Nov 15, 2002·Annals of Noninvasive Electrocardiology : the Official Journal of the International Society for Holter and Noninvasive Electrocardiology, Inc·Petri KorhonenLauri Toivonen

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