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Related Experiment Videos

[Holter ECG in evaluating myocardial ischemia. Validation using the exercise test].

A Longo, J Remédios, M J Correia

    Revista Portuguesa De Cardiologia : Orgao Oficial Da Sociedade Portuguesa De Cardiologia = Portuguese Journal of Cardiology : an Official Journal of the Portuguese Society of Cardiology
    |February 1, 1989
    PubMed
    Summary
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    The Holter system accurately detects ST-T ischemic changes during exercise tests, showing high concordance with the 12-lead ECG. This validation confirms Holter

    Area of Science:

    • Cardiology
    • Medical Technology
    • Diagnostic Imaging

    Context:

    • Exercise stress testing is crucial for diagnosing ischemic heart disease.
    • Electrocardiogram (ECG) monitoring during exercise is standard practice.
    • Holter monitoring offers continuous ECG recording, but its utility during exercise stress tests needs validation.

    Purpose:

    • To validate the accuracy of ST-T ischemic changes detected by a 2-channel Holter system against a conventional 12-lead ECG during exercise testing.
    • To compare the sensitivity and specificity of Holter monitoring versus standard ECG for identifying exercise-induced ischemia.

    Summary:

    • A study compared ST-T ischemic changes from a 2-channel Holter system with a 12-lead ECG during treadmill exercise tests in 31 patients (84% with ischemic heart disease).

    Related Experiment Videos

  • The Holter system demonstrated high concordance (94%) with the 12-lead ECG in detecting ischemic changes.
  • Excellent positive linear correlation (r = 0.8542, p < 0.001) was observed in the severity of ST depression, indicating similar diagnostic capability.

    • Impact:

    • The findings suggest that Holter monitoring is a reliable tool for assessing ST-T ischemic changes during exercise.
    • This validation supports the use of Holter systems as a comparable alternative to 12-lead ECG for exercise stress testing in specific clinical scenarios.
    • The study enhances confidence in utilizing Holter technology for diagnosing exercise-induced ischemia, potentially improving patient management and diagnostic accessibility.