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Assessment of right ventricular performance by pulsed Doppler echocardiography in patients after intraatrial repair of aortopulmonary transposition in infancy or childhood.

Abstract：

:The purpose of this study was to determine whether measurement of aortic blood flow velocity and acceleration by pulsed Doppler ultrasound can be used to assess the global performance of the systemic right ventricle noninvasively in young patients who have undergone intraatrial repair of aortopulmonary transposition. The effect of age at surgery on right ventricular performance in these patients was also studied. Pulsed Doppler velocity profiles of aortic blood flow were analyzed at a mean age of 5.5 years in 24 patients who had undergone intraatrial repair of aortopulmonary transposition either in early infancy (mean age 3.4 +/- 1.3 weeks) or later (mean age 8.5 +/- 6.5 months). Velocity and acceleration variables in these patients were compared with the same variables in 24 age-matched normal subjects and with the performance of their own right ventricle as assessed by two-dimensional echocardiographic measurement of ejection fraction. The 12 patients who underwent early repair had a higher ejection fraction than did the 12 who underwent later repair (mean +/- SD 0.60 +/- 0.07 versus 0.42 +/- 0.10; p less than 0.001). Aortic flow velocity was similar in all patients. Aortic acceleration was normal in patients after early intraatrial repair of aortopulmonary transposition (20.8 +/- 2.3 m/s2), but was abnormally slow in patients after late repair (11.1 +/- 1.8 m/s2; p less than 0.001), thus suggesting that the latter group had diminished right ventricular performance. Concomitantly, acceleration time and ratio of acceleration time to ejection time were increased in patients after late repair.(ABSTRACT TRUNCATED AT 250 WORDS)

journal_name

J Am Coll Cardiol

journal_title

Journal of the American College of Cardiology

authors

Schmidt KG,Cloez JL,Silverman NH

doi

10.1016/0735-1097(89)90352-5

subject

Has Abstract

pub_date

1989-06-01 00:00:00

pages

1578-85

issue

eissn

0735-1097

issn

1558-3597

pii

0735-1097(89)90352-5

journal_volume

pub_type

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Assessment of right ventricular performance by pulsed Doppler echocardiography in patients after intraatrial repair of aortopulmonary transposition in infancy or childhood.