title: Reliability and accuracy of measurement of transductal gradient by Doppler ultrasound.
abstract: Simultaneous continuous wave Doppler echocardiography, aortic and pulmonary artery pressure measurements were performed during cardiac catheterization in 46 patients with patent ductus arteriosus. Doppler-derived systolic, mean and diastolic transductal gradients correlated well with those measured by catheterization, respectively (r = 0.972, SEE = 6.8 mmHg; r = 0.965, SEE = 5.4 mmHg; r = 0.939, SEE = 6.2 mmHg), and there were clinically acceptable agreements between the two technical measurements. It is concluded that Doppler echocardiography is a reliable and accurate technique for noninvasive estimation of transductal gradients.
authors.affiliation: Department of Cardiovascular Diseases, King Faisal Specialist Hospital and Research Centre, Riyadh, Saudi Arabia.
authors.forename: Z M
authors.initials: ZM
authors.lastname: Ge
authors.forename: Y
authors.initials: Y
authors.lastname: Zhang
authors.forename: D S
authors.initials: DS
authors.lastname: Fan
authors.forename: J X
authors.initials: JX
authors.lastname: Fan
authors.forename: X P
authors.initials: XP
authors.lastname: Ji
authors.forename: Y X
authors.initials: YX
authors.lastname: Zhao
authors.forename: L
authors.initials: L
authors.lastname: Hatle
mesh_terms: D000293:Adolescent; D000328:Adult; D001783:Blood Flow Velocity; D006328:Cardiac Catheterization; D002648:Child; D004374:Ductus Arteriosus, Patent / Q000000981:diagnostic imaging* / Q000503:physiopathology*; D015150:Echocardiography, Doppler; D005260:Female; D006801:Humans; D008297:Male; D012044:Regression Analysis; D015203:Reproducibility of Results