Accuracy of right ventricular output estimated by Doppler echocardiography in the sheep fetus

American Journal of Obstetrics and Gynecology
H ShiraishiA M Rudolph

Abstract

Our goal was to determine whether Doppler ultrasonographic estimation of fetal right ventricular output was accurate enough to evaluate fetal cardiac performance before the technique can be applied with confidence to the human fetus. The accuracy of this method has not been validated experimentally. We compared the right ventricular output measured by Doppler echocardiography with that determined from a transit-time ultrasonic flowmeter placed around the fetal pulmonary trunk and to that determined by microsphere technique. We obtained 72 Doppler flow measurements and 16 microsphere flow measurements in six fetuses. There was a fair correlation between cardiac output estimated by Doppler echocardiography performed transabdominally and that determined by a transit-time flowmeter (r = 0.76). The correlation was excellent when Doppler echocardiography was performed by the trans-uterine approach (r = 0.94). There was also an excellent correlation between right ventricular output determined by a transit-time flowmeter and that by microsphere technique (r = 0.94). Doppler echocardiographic estimation of fetal right ventricular cardiac output is thus feasible and accurate.

References

Dec 1, 1989·American Journal of Obstetrics and Gynecology·J C VeilleV Jovkovsky
Jan 1, 1986·Circulation·K L ReedL Shenker
Aug 1, 1987·The American Journal of Cardiology·M C De SmedtE J Meijboom
Jun 1, 1987·British Heart Journal·L D AllanM Tynan
Nov 1, 1987·Pediatric Research·D F TeitelA M Rudolph
Aug 1, 1984·Journal of the American College of Cardiology·C P LoeberH D Allen

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Citations

Nov 1, 2008·Ultrasound in Obstetrics & Gynecology : the Official Journal of the International Society of Ultrasound in Obstetrics and Gynecology·T VimpeliG Acharya
Jul 1, 1997·Brazilian Journal of Medical and Biological Research = Revista Brasileira De Pesquisas Médicas E Biológicas·S L Amaral, L C Michelini
Mar 1, 1995·Pacing and Clinical Electrophysiology : PACE·Y KikuchiM Yanagisawa
Mar 24, 1999·Pacing and Clinical Electrophysiology : PACE·H ShiraishiM Yanagisawa
Jun 22, 2010·American Journal of Physiology. Heart and Circulatory Physiology·Joseph J SmolichDaniel J Penny

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