January 1, 1996Pacing and Clinical Electrophysiology
Within‐ and Between‐Patient Variation of the Signal‐Averaged P Wave in Coronary Artery Disease
Why the study?
What is the reproducibility of the signal-averaged P wave and its correlation with standard ECG in patients with coronary artery disease?
Population
193 patients with angiographically documented coronary artery disease
Comparison
Signal-averaged ECG (SAECG) for P wave duration vs Standard ECG P wave duration
Design
Cross-sectional
Authors
Discussion
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Member takes
Implication
Moderate variability warrants caution using signal-averaged P-wave in CAD; leaves open incremental value over standard ECG.
Structured PICO
What is the reproducibility of the signal-averaged P wave and its correlation with standard ECG in patients with coronary artery disease?
P
Population
193 patients with angiographically documented coronary artery disease
I
Intervention
Signal-averaged ECG (SAECG) for P wave duration
C
Comparator
Standard ECG P wave duration
O
Outcome
Interobserver, within-patient, and between-patient variation of the signal-averaged P wave durationsurrogate
The signal-averaged P wave has limited reproducibility in patients with coronary artery disease, and its findings can be predicted with high accuracy from a conventional ECG.
Cite This Study
Christiansen et al. (1996) studied this question.