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European Heart Journal 1987 8(3):216-223;
Copyright © 1987 by the European Society of Cardiology.
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© 1987 The European Society of Cardiology

Application of Doppler flow mapping in assessing the severity of mitral stenosis

C. VEYRAT*,, C. GOURTCHIGLOUIAN, D. SAINTE BEUVE, J. LAABAN, G. ABITBOL and D. KALMANSON{dagger}

Fondation A. de Rothschild Paris, France
*Chargé de Recherches au Centre National de la Recherche Scientifique Paris.
{dagger}Service de Cardiologie, Fondation A. de Rothschild 25–29 rue Manin, 75940 Paris Cedex 19, France.

Received 9 July 1986; revised 11 December 1986; .

Address for correspondence: Dr Colette Veyrat, Service de Cardiologie. Fondation A, de Rothschild, 25–29 rue Manin, 75940 Paris Cedex 19, France.

Abstract

The purpose of the flow mapping procedure is to pick up flow signals related to jets at the site of lesions, in order to delineate the cross-section of the jets.

The pulsed Doppler procedure was applied to a group of 33 consecutive patients with mitral stenosis confirmed invasively in all cases and by surgery in 15 cases. The examination involved the recording of flow signals at the distal edge of the mitral oriface investigated in the short-axis view. Doppler criteria for requiredflow signals were the presence of a high-pitched tone and of a laminar spectrum, occurring at a definite timing in early to mid-diastole, i.e. at the period of the maximal atrioventricular pressure gradient. Planimetry of the flow area was performed and correlated with haemodynamic data using the Gorlin formula.

The procedure was applicable in 32/33 patients. The correlation coefficient was 0.94, standard error of estimate 0.13 cm2, P<0.001. The mean difference between invasive and non-invasive measurements was 0.04 + 0.14 cm2 and the standard error of the mean 0.03 cm2.

This new application of flow mapping provided reliable information for the later surgical procedure. It should benefit in future from improvements in spatial resolution and in signal to noise ratio.

Key Words: Pulsed Doppler • flow mapping procedure • mitral valve area


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C. Veyrat, D. S. Beuve, Cl. Gourtchiglouian, S. Legeais, and D. Kalmanson
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[Abstract] [PDF]


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