January 1, 1993CirculationOpen Access

Critical analysis of the signal-averaged electrocardiogram. Improved identification of late potentials.

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Why the study?

Does individual lead analysis and extended averaging in signal-averaged ECG improve the identification of late potentials and ventricular tachycardia risk in patients with and without documented VT?

Population

Two patient populations: a low-arrhythmia-risk group with no evidence of heart disease and a group with…

Comparison

Signal-averaged electrocardiogram using… vs Standard signal-averaged ECG using vector…

Design

Cross-sectional

Authors

PLP. LanderUniversity of Crete EBEdward J. BerbariIndiana University – Purdue University Indianapolis CRC. RajagopalanRaja Ramanna Centre for Advanced Technology

Discussion

Member takes

Implication

May enhance SAECG sensitivity for VT risk; hypothesis-generating, requiring prospective validation before practice change.

Structured PICO

Does individual lead analysis and extended averaging in signal-averaged ECG improve the identification of late potentials and ventricular tachycardia risk in patients with and without documented VT?

Population

Two patient populations: a low-arrhythmia-risk group with no evidence of heart disease and a group with clinically documented ventricular tachycardia (VT).

Intervention

Signal-averaged electrocardiogram (ECG) using individual lead analysis (XYZ leads) and extended (600-beat) averaging.

Comparator

Standard signal-averaged ECG using vector magnitude analysis and standard (200-beat) averaging.

Outcome

Detection of late potentials and identification of ventricular tachycardia (VT) (measured by sensitivity, specificity, and accuracy of filtered QRS duration and terminal QRS amplitude).surrogate

Individual lead analysis and extended averaging of signal-averaged ECGs improve the sensitivity of detecting late potentials, enabling a more refined ventricular tachycardia risk stratification scheme.

Cite This Study

Lander et al. (1993) studied this question.

synapsesocial.com/papers/6a7100c08031ec7bb1dcb64f https://doi.org/10.1161/01.cir.87.1.105

Topics

Ventricular arrhythmias

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Critical analysis of the signal-averaged electrocardiogram. Improved identification of late potentials.

Discussion

Member takes

Implication

Structured PICO

Cite This Study

Topics

Critical analysis of the signal-averaged electrocardiogram. Improved identification of late potentials.

Discussion

Member takes

Implication

Structured PICO

Cite This Study

Also Consider

Topics

Also Consider