title: [Comparative study of pulsed and continuous Doppler in the quantification of aortic insufficiency].
abstract: 31 patients whose mean age was 61 +/- 29 yrs. presenting with aortic regurgitation (AR) benefited from cardiac catheterization which was preceded by Doppler ultrasound examination in a prospective study to compare the diagnostic contributions made by continuous vs pulsed wave techniques respectively in the quantitative assessment of AR, with reference to semi-quantitative angiographic evaluation. Pulsed Doppler analysis involves mapping of the left ventricle in two projections as well as the investigation of blood flow in the aortic isthmus using a suprasternal approach. Collection of continuous wave signals from the cardiac apex makes it possible to measure circulatory deceleration and the half-time of decrease in signal velocity and the protodiastolic pressure gradient. Our results corroborate the reliability of data obtained using continuous-wave Doppler technique in finding significant correlations for each parameter respectively: r' = 0.88 (p less than 0.001); r' = -0.81 (p less than 0.001); r' = -0.75 (p less than 0.001). Values determined by pulsed wave Doppler mapping of the left ventricle appear to be less satisfactory but are significant: r' = 0.68 (p less than 0.001) while measurement of end-diastolic blood flow recorded in the isthmus of the aorta is more highly correlated: r' = 0.84 (p less than 0.01), with the main disadvantage being its limited applicability to a small number of our patients (48%). We thus concluded that continuous-wave Doppler ultrasound is a better technique in the quantitative evaluation of AR, while recalling the essential additional value of pulsed-wave Doppler technique to localize the leakage and of ultrasound to assess its impact on the left ventricle.(ABSTRACT TRUNCATED AT 250 WORDS)
authors.affiliation: Service de Cardiologie, Hôpital Robert-Debré, Reims.
authors.forename: E
authors.initials: E
authors.lastname: Pollet
authors.forename: D
authors.initials: D
authors.lastname: Metz
authors.forename: D
authors.initials: D
authors.lastname: Jolly
authors.forename: L
authors.initials: L
authors.lastname: Chapoutot
authors.forename: T
authors.initials: T
authors.lastname: Gandon
authors.forename: J
authors.initials: J
authors.lastname: Elaerts
authors.forename: A
authors.initials: A
authors.lastname: Bajolet
mesh_terms: D000328:Adult; D000368:Aged; D001022:Aortic Valve Insufficiency / Q000175:diagnosis*; D006328:Cardiac Catheterization; D015150:Echocardiography, Doppler; D005260:Female; D006801:Humans; D008297:Male; D008875:Middle Aged
vernacular_title: Etude comparative des Dopplers pulsé et continu dans la quantification des insuffisances aortiques.