Abstract
Background Late-onset intrauterine growth restriction (IUGR) results from the failure of placenta to supply enough nutrients and oxygen to the rapidly growing late gestation fetus [1]. Inaccuracies in ultrasound based late gestational fetal weight estimation and the absence of typical Doppler changes make late-onset IUGR difficult to detect [2]. We were interested in whether new MRI technology incorporating fetal vessel blood flow and oximetry measurement could improve the sensitivity of conventional fetal monitoring.
Highlights
Late-onset intrauterine growth restriction (IUGR) results from the failure of placenta to supply enough nutrients and oxygen to the rapidly growing late gestation fetus [1]
The umbilical artery (UA) pulsatility index (PI) (GA31: 0.9, GA34: 1.0, GA37: 1.1) and middle cerebral artery (MCA) PI (GA36: 1.95) were in normal range and there was no clinical suspicion of IUGR at any stage of the pregnancy
Estimated fetal weight increased from 2.25kg to 2.84kg from GA34 to 39; the weight percentile dropped from 38th to 8th (Fig. 1)
Summary
Late-onset intrauterine growth restriction (IUGR) results from the failure of placenta to supply enough nutrients and oxygen to the rapidly growing late gestation fetus [1]. We were interested in whether new MRI technology incorporating fetal vessel blood flow and oximetry measurement could improve the sensitivity of conventional fetal monitoring
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