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Toxicant-Induced Torsade de Pointes

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Critical Care Toxicology
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Abstract

Torsade de pointes (TdP) is a rare but potentially life-threatening event in poisoned patients. The medical toxicologist must identify high risk patients and recognize preattack electrocardiographic (ECG) signs and be able to rapidly distinguish this arrhythmia from other ventricular arrhythmias as the treatment of TdP is unique. This chapter emphasizes the pathophysiology, risk factors, ECG signs, and clinical management of TdP in the poisoned patient as well as the clinical approach to QT-prolongation in poisoned patients.

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Correspondence to Jonas Höjer or Donna Seger .

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Grading System for Levels of Evidence Supporting Recommendations in Critical Care Toxicology, 2nd Edition

  1. I

    Evidence obtained from at least one properly randomized controlled trial.

  2. II-1

    Evidence obtained from well-designed controlled trials without randomization.

  3. II-2

    Evidence obtained from well-designed cohort or case–control analytic studies, preferably from more than one center or research group.

  4. II-3

    Evidence obtained from multiple time series with or without the intervention. Dramatic results in uncontrolled experiments (such as the results of the introduction of penicillin treatment in the 1940s) could also be regarded as this type of evidence.

  5. III

    Opinions of respected authorities, based on clinical experience, descriptive studies and case reports, or reports of expert committees.

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Höjer, J., Seger, D. (2016). Toxicant-Induced Torsade de Pointes. In: Brent, J., Burkhart, K., Dargan, P., Hatten, B., Megarbane, B., Palmer, R. (eds) Critical Care Toxicology. Springer, Cham. https://doi.org/10.1007/978-3-319-20790-2_121-1

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  • DOI: https://doi.org/10.1007/978-3-319-20790-2_121-1

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  • Online ISBN: 978-3-319-20790-2

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