Recent advances in signal processing have made it possible to measure T-wave alternans
(TWA) during treadmill exercise (summarized in Rosenbaum et al
1
). Data can be prefiltered to suppress noise at repetitive frequencies. In addition,
a sharpness criterion for the alternans peak further reduces the impact of repetitive
motion artifact on the determination of alternans. Accordingly, the purpose of this
report was to assess the validity of microvolt TWA testing during treadmill exercise
compared with bicycle exercise.To read this article in full you will need to make a payment
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References
- Predicting sudden cardiac death from T wave alternans of the surface electrocardiogram.J Cardiovasc Electrophys. 1996; 7: 1095-1111
- A Comparison of T-wave alternans, signal averaged electrocardiography and programmed ventricular stimulation for arrhythmia risk stratification.J Am Coll Cardiol. 2000; 36: 2247-2253
- Electrical alternans and vulnerability to ventricular arrhythmias.N Engl J Med. 1994; 330: 235-241
- Statistical Methods for Rates and Proportions. John Wiley & Sons, New York1981
- The immediate reproducibility of T wave alternans during bicycle exercise.Pacing Clin Electrophysiol. 2002; 25: 1185-1191
Article Info
Publication History
Accepted:
March 11,
2003
Received in revised form:
March 11,
2003
Received:
October 24,
2002
Footnotes
☆This research was supported in part by the Doris Duke Charitable Foundation (New York, New York) and was conducted at the Irving Center for Clinical Research (Columbia University College of Physicians and Surgeons, New York, New York), supported by grant 5 M01 RR-00645 from the Division of Research Resources, General Clinical Research Centers Program, National Institutes of Health, Bethesda, Maryland.
Identification
Copyright
© 2003 Excerpta Medica Inc. Published by Elsevier Inc. All rights reserved.
