What does this research mean for the field?

An area-based two-dimensional echocardiographic method using a fixed-axis system provides superior predictive accuracy and localization of regional left ventricular contraction abnormalities in patients with coronary artery disease compared to linear or floating-axis methods. Novelty: ClaimNovelty.METHODOLOGICAL. Consensus alignment: ConsensusAlignment.NEUTRAL.

What question did this study set out to answer?

To determine the accuracy and regional localization ability of quantitative two-dimensional echocardiographic techniques in patients with coronary artery disease.

April 1, 1981Circulation

Quantitative detection of regional left ventricular contraction abnormalities by two-dimensional echocardiography. II. Accuracy in coronary artery disease.

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Why the study?

Does an area-based method of two-dimensional echocardiography improve the predictive accuracy of detecting and localizing regional left ventricular contraction abnormalities compared to linear methods in patients with coronary artery disease?

Population

Patients with coronary artery disease divided into two groups by electrocardiographic and angiographic…

Comparison

Area-based quantitative two-dimensional… vs Linear methods and floating-axis systems for…

Design

Cross-sectional

Authors

APAttilio ParisiForo Italico University of Rome PMP F MoynihanUnited States Department of Veterans Affairs EFEdward D. FollandUtah State University

Discussion

Member takes

Implication

Area methods may improve LV wall motion detection in CAD; leaves open prospective validation before practice change.

Key Points

To determine the accuracy and regional localization ability of quantitative two-dimensional echocardiographic techniques in patients with coronary artery disease.
Evaluated two patient groups classified by electrocardiography and angiography: group 1 with myocardial infarction and regional wall motion defects, and group 2 with normal wall motion and no infarction.
Assessed sensitivity, specificity, and overall predictive accuracy across linear versus area-based quantitative methods, quadrant versus octant divisions, and fixed versus floating axis coordinate systems.
Area-based approaches achieved predictive accuracy of 87% to 95%, outperforming linear methods which ranged from 76% to 84%.
No significant difference in predictive accuracy was observed between quadrant and octant image subdivision schemes.
Fixed external-axis coordinate systems localized regional contraction defects more effectively than floating-axis systems.

Structured PICO

Population

Patients with coronary artery disease divided into two groups by electrocardiographic and angiographic criteria: group 1 with infarction and regional wall motion abnormalities, and group 2 with no infarction and normal wall motion.

Intervention

Area-based quantitative two-dimensional echocardiography using a fixed external-axis system and either octant or quadrant image subdivision.

Comparator

Linear methods and floating-axis systems for two-dimensional echocardiography.

Outcome

Sensitivity to detect wall motion defects, specificity to correctly categorize normal segments, overall predictive accuracy, and ability to localize regional contraction defects.surrogate

Area-based 2D echocardiography using a fixed-axis system provides superior predictive accuracy for categorizing and localizing left ventricular regional wall motion abnormalities compared to linear methods.

Cite This Study

Parisi et al. (1981) studied this question.

synapsesocial.com/papers/6a1dfee349e88a0d41606e20 https://doi.org/10.1161/01.cir.63.4.761

Topics

Echocardiography

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Quantitative detection of regional left ventricular contraction abnormalities by two-dimensional echocardiography. II. Accuracy in coronary artery disease.

Discussion

Member takes

Implication

Key Points

Structured PICO

Cite This Study

Topics

Quantitative detection of regional left ventricular contraction abnormalities by two-dimensional echocardiography. II. Accuracy in coronary artery disease.

Discussion

Member takes

Implication

Key Points

Structured PICO

Cite This Study

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Topics

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