Ultrasound in obstetrics & gynecology : the official journal of the International Society of Ultrasound in Obstetrics and Gynecology
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Ultrasound Obstet Gynecol · Jul 2009
Systolic myocardial velocity alterations in the growth-restricted fetus with cerebroplacental redistribution.
Intrauterine growth restriction (IUGR) is associated with cerebroplacental redistribution (CPR), fetal stress and poor outcome, all of which may be related to dysfunction of the fetal myocardium. The aim of this study was to specifically assess myocardial function in IUGR fetuses with CPR in comparison with normal fetuses using color Doppler myocardial imaging (CDMI). ⋯ CDMI facilitates acquisition of fetal myocardial ventricular S'. The combination of IUGR and CPR is associated with a reduced left ventricular S', especially in those with reversed UA flow. In this subgroup a left S' below 1.6 cm/s seemed to predict mortality in the perinatal period.
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Ultrasound Obstet Gynecol · Jul 2009
Myocardial tissue Doppler assessment of diastolic function in the growth-restricted fetus.
Myocardial tissue Doppler (MTD) is a technique for the measurement of myocardial velocities in systole and diastole. This study evaluates the use of MTD in the assessment of cardiac diastolic function in fetuses with intrauterine growth restriction (IUGR) with placental insufficiency and in appropriate-for-gestational age (AGA) fetuses with hypertensive mothers. ⋯ Using MTD, the ratios between early and late diastolic myocardial velocities are higher in IUGR fetuses than in AGA fetuses at the IVS and the LV, regardless of the presence of maternal hypertension. MTD may be more sensitive than atrioventricular spectral Doppler for the detection of ventricular diastolic dysfunction in IUGR fetuses.