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Assessment of severity of aortic stenosis by continuous wave Doppler echocardiography.
Indian Heart J ; 1990 Sep-Oct; 42(5): 371-4
Article Dans Anglais | IMSEAR | ID: sea-3510
ABSTRACT
Fifty consecutive patients with aortic stenosis were evaluated by continuous wave Doppler echocardiography for assessment of the transaortic gradient. The Doppler derived gradients were compared with the gradients measured at cardiac catheterisation. Excellent correlation was found between the Doppler and catheterisation findings for the maximum instantaneous gradient (r = 0.92) and the mean systolic gradient (r = 0.84). The maximum, midsystolic and late systolic Doppler gradients also showed a good correlation with the peak to peak catheter gradient. The maximum Doppler velocity however, showed overestimation of the peak to peak gradient in the presence of mild aortic stenosis (predictive accuracy 86%). The midsystolic Doppler velocity showed the highest predictive accuracy (94%) for the detection of severe aortic stenosis. No case of severe aortic stenosis was missed by Doppler using either the maximum or midsystolic Doppler velocity. These findings indicate that continuous wave Doppler ultrasound provides a reliable estimate of the gradient in patients with aortic stenosis.
Sujets)
Texte intégral: Disponible Indice: IMSEAR (Asie du Sud-Est) Sujet Principal: Sténose aortique / Pression sanguine / Femelle / Humains / Mâle / Cathétérisme cardiaque / Échocardiographie-doppler / Enfant / Adolescent / Adulte Type d'étude: Étude pronostique langue: Anglais Texte intégral: Indian heart j Année: 1990 Type: Article

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Texte intégral: Disponible Indice: IMSEAR (Asie du Sud-Est) Sujet Principal: Sténose aortique / Pression sanguine / Femelle / Humains / Mâle / Cathétérisme cardiaque / Échocardiographie-doppler / Enfant / Adolescent / Adulte Type d'étude: Étude pronostique langue: Anglais Texte intégral: Indian heart j Année: 1990 Type: Article