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[Validation of the Holter method in detecting myocardial ischemia using an exercise test simultaneously]
I Rayo1, E Marín Huerta, A Muela
1Servicio de Cardiología, Hospital Ramón y Cajal, Madrid.
Revista Espanola De Cardiologia
|May 1, 1990
Summary
Holter monitoring reliably detects myocardial ischemic changes during exercise tests. A two-channel system with specific leads demonstrated high accuracy in reproducing ST-segment changes, confirming its clinical utility.
Area of Science:
- Cardiology
- Diagnostic Electrocardiography
Background:
- Myocardial ischemia detection is crucial for cardiovascular health.
- Holter monitoring is a common tool, but its reliability in reproducing exercise-induced ischemic changes requires evaluation.
Purpose of the Study:
- To assess the accuracy of a two-channel Holter monitoring system in detecting ST-segment changes during treadmill exercise tests.
- To compare Holter monitoring results with a conventional 12-lead electrocardiogram.
Main Methods:
- 110 patients underwent a Bruce protocol treadmill exercise test.
- Simultaneous electrocardiogram recordings using a two-channel Holter (CM-V3, CM-V5 leads) and a 12-lead system.
- Ischemic ST-segment change defined as ≥1 mm depression >0.08 sec post-J point.
Main Results:
- High concordance between Holter and 12-lead ECG in 101 patients.
- Overall accuracy: 81.8% sensitivity, 98.5% specificity, 97.3% PPV, 89.0% NPV.
- Strong correlations found for ST-segment depression, duration of ischemia, and heart rates.
Conclusions:
- Two-channel Holter recording with CM-V3 and CM-V5 leads reliably reproduces ST-segment changes indicative of myocardial ischemia.
- This system demonstrates significant accuracy and clinical utility for diagnosing exercise-induced ischemia.