Key result
The automatic global QT interval measurement algorithm demonstrated a mean error of 3.95 ± 5.5 ms compared to cardiologist measurements across 15,910 ECGs.
Population
15,910 ECGs from a large clinical trial database and Cell-to-ECG forward-modeling based simulation signals
Comparison
Automatic computerized algorithm for global QT… vs Cardiologist QT intervals and action potential…
Design
Other
Authors
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May enable reliable automated QT reporting in routine ECGs; leaves open prospective validation for arrhythmia risk stratification.
Mean Difference: 3.95
The proposed global QT interval measurement algorithm demonstrates high accuracy and consistency when compared to cardiologist measurements and simulated action potential durations.
Joel Xue (2009) studied QT interval measurement (n=15,910). Automatic computerized algorithm for global QT interval measurement vs. Cardiologist QT intervals was evaluated on Mean error between algorithm and cardiologist QT intervals (Mean error 3.95 ± 5.5 ms). The automatic global QT interval measurement algorithm demonstrated a mean error of 3.95 ± 5.5 ms compared to cardiologist measurements across 15,910 ECGs.
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