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Investigating the Additive Interaction of QT-Prolonging Drugs in Older People Using Claims Data

Author

Listed:
  • Andreas D. Meid

    (University of Heidelberg)

  • Anna Medem

    (University of Heidelberg
    University of Heidelberg)

  • Dirk Heider

    (University Medical Center Hamburg-Eppendorf)

  • Jürgen-Bernhard Adler

    (Wissenschaftliches Institut der AOK (WIdO))

  • Christian Günster

    (Wissenschaftliches Institut der AOK (WIdO))

  • Hanna M. Seidling

    (University of Heidelberg
    University of Heidelberg)

  • Renate Quinzler

    (University of Heidelberg)

  • Hans-Helmut König

    (University Medical Center Hamburg-Eppendorf)

  • Walter E. Haefeli

    (University of Heidelberg)

Abstract

Introduction Drugs that potentially prolong the QT interval carry the risk of life-threatening Torsades de pointes (TdP) ventricular arrhythmia. Objective The objective of this study was to investigate the potential additive risk for ventricular arrhythmia with concomitant prescriptions of QT-prolonging drugs. Methods Claims data for persons aged ≥65 years between 2010 and 2012 in Germany were analyzed and all cases hospitalized for ventricular arrhythmia were selected. In a case-crossover analysis, exposure with QT-prolonging drugs according to the Arizona Center for Education and Research on Therapeutics (AZCERT) classification of ‘known,’ ‘conditional,’ and ‘possible’ TdP risk was determined in respective event and control windows preceding hospitalization. Conditional logistic regression was applied to derive odds ratios (ORs). Results Among 6,849,622 health-insured persons, we identified 2572 patients newly hospitalized for ventricular arrhythmia. Drugs with ‘known’ risk were more frequently prescribed in the event window than in the control window (309 vs. 239; P

Suggested Citation

  • Andreas D. Meid & Anna Medem & Dirk Heider & Jürgen-Bernhard Adler & Christian Günster & Hanna M. Seidling & Renate Quinzler & Hans-Helmut König & Walter E. Haefeli, 2017. "Investigating the Additive Interaction of QT-Prolonging Drugs in Older People Using Claims Data," Drug Safety, Springer, vol. 40(2), pages 133-144, February.
    • Handle: RePEc:spr:drugsa:v:40:y:2017:i:2:d:10.1007_s40264-016-0477-y
    DOI: 10.1007/s40264-016-0477-y
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