Advertisement

Comparison of T-wave alternans testing during treadmill and bicycle exercise in patients with congestive heart failure

      Recent advances in signal processing have made it possible to measure T-wave alternans (TWA) during treadmill exercise (summarized in Rosenbaum et al
      • Rosenbaum D.S.
      • Albrecht P.
      • Cohen R.J.
      Predicting sudden cardiac death from T wave alternans of the surface electrocardiogram promise and pitfalls.
      ). 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

      Purchase one-time access:

      Academic & Personal: 24 hour online accessCorporate R&D Professionals: 24 hour online access
      One-time access price info
      • For academic or personal research use, select 'Academic and Personal'
      • For corporate R&D use, select 'Corporate R&D Professionals'

      Subscribe:

      Subscribe to American Journal of Cardiology
      Already a print subscriber? Claim online access
      Already an online subscriber? Sign in
      Institutional Access: Sign in to ScienceDirect

      References

        • Rosenbaum D.S.
        • Albrecht P.
        • Cohen R.J.
        Predicting sudden cardiac death from T wave alternans of the surface electrocardiogram.
        J Cardiovasc Electrophys. 1996; 7: 1095-1111
        • Gold M.R.
        • Bloomfield D.M.
        • Anderson K.P.
        • El-Sherif N.
        • Wilber D.J.
        • Groh W.J.
        • Estes N.A.
        • Kaufman E.S.
        • Greenberg M.L.
        • Rosenbaum D.S.
        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
        • Rosenbaum D.S.
        • Jackson L.E.
        • Smith J.M.
        • Garan H.
        • Ruskin J.N.
        • Cohen R.J.
        Electrical alternans and vulnerability to ventricular arrhythmias.
        N Engl J Med. 1994; 330: 235-241
        • Fleiss J.L.
        Statistical Methods for Rates and Proportions. John Wiley & Sons, New York1981
        • Bloomfield D.M.
        • Ritvo B.S.
        • Parides M.K.
        • Kim M.H.
        The immediate reproducibility of T wave alternans during bicycle exercise.
        Pacing Clin Electrophysiol. 2002; 25: 1185-1191