What question did this study set out to answer?

To evaluate the accuracy of a noninvasive ultrasound Doppler technique for calculating diastolic pressure gradients across Björk-Shiley mitral valve implants compared to direct manometric measurements.

March 1, 1979CirculationOpen Access

An ultrasound Doppler technique for the noninvasive determination of the pressure gradient in the Björk-Shiley mitral valve.

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Why the study?

Does noninvasive ultrasound Doppler accurately determine the pressure gradient compared to manometry in patients with a Björk-Shiley mitral valve?

Population

9 adult patients with a Björk-Shiley mitral valve implant

Comparison

Noninvasive ultrasound Doppler determination of… vs Simultaneous manometric pressure gradient…

Design

Cross-sectional

Authors

JHJarle HolenSINTEF SSSvein SimonsenOslo University Hospital TFTor FröysakerUniversity of Oslo

Discussion

Member takes

Implication

May support Doppler for Björk-Shiley mitral gradients; leaves open prospective validation before practice change.

Key Points

To evaluate the accuracy of a noninvasive ultrasound Doppler technique for calculating diastolic pressure gradients across Björk-Shiley mitral valve implants compared to direct manometric measurements.
Simultaneously collected invasive manometric and noninvasive ultrasound Doppler data in N=9 adult patients with Björk-Shiley mitral implants.
Compared manometric pressure gradients (delta Pm) directly to ultrasound-derived gradients (delta Pu) across identical diastolic periods.
Mean diastolic manometric gradient (delta Pm) ranged from 2 to 12.5 mm Hg across the nine participants.
The mean difference between the manometric and ultrasound diastolic values (delta Pm - delta Pu) was 0.3 +/- 1.0 mm Hg (SD), demonstrating high noninvasive accuracy.

Structured PICO

Does noninvasive ultrasound Doppler accurately determine the pressure gradient compared to manometry in patients with a Björk-Shiley mitral valve?

Population

9 adult patients with a Björk-Shiley mitral valve implant

Intervention

Noninvasive ultrasound Doppler determination of pressure gradient

Comparator

Simultaneous manometric (invasive) pressure gradient determination

Outcome

Difference between mean diastolic values of manometric gradient (delta Pm) and ultrasound gradient (delta Pu)surrogate

Ultrasound Doppler is an accurate and reliable noninvasive method for determining the mean diastolic pressure gradient in patients with a Björk-Shiley mitral valve implant.

Cite This Study

Holen et al. (1979) studied this question.

synapsesocial.com/papers/6a7150f235aa2c282ce29f27 https://doi.org/10.1161/01.cir.59.3.436

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An ultrasound Doppler technique for the noninvasive determination of the pressure gradient in the Björk-Shiley mitral valve.

Discussion

Member takes

Implication

Key Points

Structured PICO

Cite This Study

An ultrasound Doppler technique for the noninvasive determination of the pressure gradient in the Björk-Shiley mitral valve.

Discussion

Member takes

Implication

Key Points

Structured PICO

Cite This Study

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