Limitations of Doppler echocardiography for the post-operative evaluation of aortic coarctation

Mey, Stefaan De; Segers, Patrick; Coomans, Ilse; Verhaaren, Henri; Verdonck, Pascal

doi:10.1016/s0021-9290(01)00043-4

Cited by 30 publications

(36 citation statements)

References 15 publications

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“…where p is pressure (in Pa), density (in kg.m 3 [18][19][20][21]74] . Using colour M-mode Doppler echocardiography, by integrating the Euler equation (Eq.…”

Section: Transvalvular Pressure Gradientsmentioning

confidence: 99%

See 1 more Smart Citation

Diastolic Filling and Pressure Imaging: Taking Advantage of the Information in a Colour M-mode Doppler Image

Mey

Sutter

Vierendeels

et al. 2001

European Journal of Echocardiography

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The ability to derive non-invasively information on left ventricular diastolic function on one hand and pressure gradients on the other hand, makes Doppler ultrasound a very attractive tool in clinical practice. However, the limitations of the standard Doppler approaches in differentiating between normal and pseudonormal filling patterns, together with the limitations of the simplified Bernoulli equation for assessing pressure gradients, are well described. In this manuscript the role of colour M-mode Doppler echocardiography as a tool that can overcome these limitations is discussed. Relevant key concepts of the haemodynamics of left ventricular filling and its relationship with colour M-mode Doppler echocardiography are introduced.

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“…where p is pressure (in Pa), density (in kg.m 3 [18][19][20][21]74] . Using colour M-mode Doppler echocardiography, by integrating the Euler equation (Eq.…”

Section: Transvalvular Pressure Gradientsmentioning

confidence: 99%

“…using the simplified Bernoulli equation pressure drops across the mitral valve are estimated based on pulsed wave Doppler derived velocities [17] . However, the limitations for assessing pressure gradients using the simplified Bernoulli equation are largely demonstrated [18][19][20][21] .…”

Section: Introductionmentioning

confidence: 99%

Diastolic Filling and Pressure Imaging: Taking Advantage of the Information in a Colour M-mode Doppler Image

Mey

Sutter

Vierendeels

et al. 2001

European Journal of Echocardiography

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“…6,9,10 Echocardiography has been used successfully to assess the morphology and hemodynamic severity of CoA, 11 but it has known limitations related to acoustic barriers and violation of the assumptions that underlie the simplified Bernoulli equation. 12 Cardiac magnetic resonance imaging (CMRI) provides an accurate assessment of the anatomic characteristics of CoA and collateral blood vessels. 5,[13][14][15] Prior investigations on CMRI assessment of CoA severity compared the anatomic features and the extent of collateral blood flow with coarctation diameter measured by x-ray angiography, 10,15 blood pressure measurements by sphygmomanometry, 9 and Doppler assessment of flow velocity.…”

mentioning

confidence: 99%

Magnetic Resonance Imaging Predictors of Coarctation Severity

et al. 2005

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Background-MRI is increasingly used for anatomic assessment of aortic coarctation (CoA), but its ability to predict the transcatheter pressure gradient, considered the reference standard for hemodynamic severity, has not been studied in detail. This study evaluated the ability of MRI to distinguish between mild versus moderate and severe CoA as determined by cardiac catheterization. Methods and Results-The clinical, MRI, and catheterization data of 31 subjects referred for assessment of native or recurrent CoA were reviewed retrospectively. Patients were divided into 2 groups on the basis of peak coarctation gradient by catheterization: Ͻ20 mm Hg (nϭ12) and Ն20 mm Hg (nϭ19). Patients with cardiac index Ͻ2.2 L · min

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“…Transthoracic and transesophageal echocardiography with Doppler techniques can usually detect the coarctation and record the transcoarctation pressure gradient, but their limitations include problems with poor acoustic windows, difficulty in the alignment of Doppler with flow and poor detection of collateral circulation. [17,18] X-ray angiography, computed tomography and magnetic resonance imaging can all provide anatomic information, [19] but magnetic resonance has key advantages. From a safety perspective, there is no ionising radiation exposure involved and the contrast used is not nephrotoxic.…”

Section: Vascular Abnormalitiesmentioning

confidence: 99%

Integrated evaluation of hypertensive patients with cardiovascular magnetic resonance

Maceira

Prasad

Pennell

et al. 2008

International Journal of Cardiology

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Limitations of Doppler echocardiography for the post-operative evaluation of aortic coarctation

Cited by 30 publications

References 15 publications

Diastolic Filling and Pressure Imaging: Taking Advantage of the Information in a Colour M-mode Doppler Image

Diastolic Filling and Pressure Imaging: Taking Advantage of the Information in a Colour M-mode Doppler Image

Magnetic Resonance Imaging Predictors of Coarctation Severity

Integrated evaluation of hypertensive patients with cardiovascular magnetic resonance

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