What does this research mean for the field?

Two-dimensional echocardiography and Doppler pressure half-time methods allow for the noninvasive estimation of mitral valve area in patients with pure mitral stenosis, with their comparative accuracy potentially influenced by prior commissurotomy. Novelty: ClaimNovelty.INCREMENTAL. Consensus alignment: ConsensusAlignment.NEUTRAL.

What question did this study set out to answer?

Compare the accuracy of two-dimensional echocardiography and Doppler pressure half-time methods against cardiac catheterization for measuring mitral valve area in patients with pure mitral stenosis, with and without prior commissurotomy.

January 1, 1986Circulation

Comparative accuracy of two-dimensional echocardiography and Doppler pressure half-time methods in assessing severity of mitral stenosis in patients with and without prior commissurotomy.

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Why the study?

How do two-dimensional echocardiography and Doppler pressure half-time methods compare to cardiac catheterization for estimating mitral valve area in patients with pure mitral stenosis?

Population

74 consecutive patients who underwent cardiac catheterization for evaluation of pure mitral stenosis. 6…

Comparison

Two-dimensional echocardiography and Doppler… vs Cardiac catheterization measurements of mitral…

Design

Cohort

Authors

MSMikel D. SmithUniversity of Kentucky RHRodney HandshoeUniversity of Kentucky SHSharon HandshoeUnited States Department of Veterans Affairs

Discussion

Member takes

Implication

Provides catheterization reference ranges in mitral stenosis; leaves open validation of 2D echo and Doppler accuracy.

Key Points

Compare the accuracy of two-dimensional echocardiography and Doppler pressure half-time methods against cardiac catheterization for measuring mitral valve area in patients with pure mitral stenosis, with and without prior commissurotomy.
Retrospectively analyzed 74 consecutive patients with mitral stenosis evaluated by cardiac catheterization and pre-procedure two-dimensional echocardiography, including 37 with prior commissurotomy and 37 unoperated.
Calculated mitral valve area via short-axis two-dimensional echocardiographic planimetry and continuous-wave Doppler pressure half-time (attempted in 45 patients).
Compared noninvasive measurements to resting mitral valve area derived at catheterization using the Gorlin formula and thermodilution cardiac output.
Doppler pressure half-time measurements yielded adequate signals in 100% of tested patients (45/45), whereas two-dimensional echocardiography was technically inadequate in 8.1% (6/74 patients: 2 commissurotomy, 4 unoperated).
Catheterization-derived mitral valve area across the overall cohort averaged 1.08 ± 0.42 cm², ranging from 0.37 to 2.30 cm².

Structured PICO

How do two-dimensional echocardiography and Doppler pressure half-time methods compare to cardiac catheterization for estimating mitral valve area in patients with pure mitral stenosis?

Population

74 consecutive patients who underwent cardiac catheterization for evaluation of pure mitral stenosis (37 with previous mitral commissurotomy, 37 unoperated). 6 patients were excluded due to inadequate images.

Intervention

Two-dimensional echocardiography (2DE) and Doppler pressure half-time methods

Comparator

Cardiac catheterization measurements of mitral valve area (Gorlin formula)

Outcome

Accuracy of noninvasive estimation of mitral valve areasurrogate

This study evaluates the diagnostic accuracy of 2D echocardiography and Doppler pressure half-time against invasive catheterization for assessing mitral stenosis severity.

Limitations

Retrospective design
Abstract truncated

Cite This Study

Smith et al. (1986) studied this question.

synapsesocial.com/papers/6a1bf38826cb5670aa9d278b https://doi.org/10.1161/01.cir.73.1.100

Topics

Echocardiography

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Comparative accuracy of two-dimensional echocardiography and Doppler pressure half-time methods in assessing severity of mitral stenosis in patients with and without prior commissurotomy.

Discussion

Member takes

Implication

Key Points

Structured PICO

Limitations

Cite This Study

Topics

Comparative accuracy of two-dimensional echocardiography and Doppler pressure half-time methods in assessing severity of mitral stenosis in patients with and without prior commissurotomy.

Discussion

Member takes

Implication

Key Points

Structured PICO

Limitations

Cite This Study

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Topics

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