June 1, 1985Circulation

Hydraulic estimation of stenotic orifice area: a correction of the Gorlin formula.

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Why the study?

Does a newly derived empirical formula predict stenotic valvular orifice area more accurately than the traditional Gorlin formula?

Population

Pulsatile flow model emulating left ventricular and aortic pressures and flow, validated in 19 patients with…

Comparison

A newly derived empirical formula for estimating… vs The traditional Gorlin formula

Authors

SCS.R. CannonBarts Health NHS Trust KRKent L. RichardsThe University of Texas at San Antonio MCMichael CrawfordOregon Health & Science University

Discussion

Member takes

Implication

May improve valve area estimation accuracy; leaves open prospective clinical validation.

Structured PICO

Does a newly derived empirical formula predict stenotic valvular orifice area more accurately than the traditional Gorlin formula?

Population

Pulsatile flow model emulating left ventricular and aortic pressures and flow, validated in 19 patients with Hancock porcine xenograft valves and the original Gorlin patient series

Intervention

A newly derived empirical formula for estimating stenotic valvular orifice area

Comparator

The traditional Gorlin formula

Outcome

Accuracy of predicted orifice areas compared to actual areas (measured by correlation coefficient r and standard error of estimate SEE)surrogate

A newly derived empirical formula provides more accurate estimations of stenotic valvular orifice area compared to the traditional Gorlin formula.

Cite This Study

Cannon et al. (1985) studied this question.

synapsesocial.com/papers/69f53fc2e0fbb6efbd203b8f https://doi.org/10.1161/01.cir.71.6.1170

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