Ilhan Aslan

University of Utah, Salt Lake City, Utah, United States

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Publications (2)2.73 Total impact

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    ABSTRACT: T-wave alternans (TWA) is a harbinger of ventricular vulnerability and an important prognostic indicator for torsade de pointes and likely sudden death in patients with LQTS. We analyzed the occurrence of TWA in 18 patients with LQTS (7 males, 11 females, ages ranging from 6 months to 32 years--median 8.4 years). Analysis was performed with software to investigate dynamics of cycle length mediated repolarization changes. Digital Holter ECG analysis revealed macroscopic, true TWA in 3 of 18 patients. TWA showed a variable morphological expression. One patient had continuous changes of T wave polarity, but not on a periodic beat-to-beat basis. Onsets of macroscopic TWA were preceded by long/short cycle length sequences and tachycardic rates above 130 to 140 bpm. Impact of ventricular premature beats on TWA onset was insignificant. Two of the identified patients with TWA had sudden cardiac death during follow-up (one refused PM therapy). At present, TWA cannot be detected automatically from Holter ECGs and therefore may be missed, despite the potential danger for the individuals. The observation that predominantly high beat rates and not beat rate changes, per se, triggered episodes of TWA renders difficult general therapeutic recommendations for the identified patients at risk.
    Journal of Electrocardiology 02/2001; 34 Suppl(Suppl):93-6. DOI:10.1054/jelc.2001.28838 · 1.36 Impact Factor
  • Journal of Electrocardiology 12/2000; 33:81-81. DOI:10.1016/S0022-0736(00)80014-X · 1.36 Impact Factor

Publication Stats

10 Citations
2.73 Total Impact Points

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  • 2001
    • University of Utah
      Salt Lake City, Utah, United States