The effect of fetal behavioral states on middle cerebral artery peak systolic velocity

This study was undertaken to determine whether is there a difference in the middle cerebral artery peak systolic velocity (MCA PSV) between active and resting behavioral states in healthy fetuses aged 30 to 32 weeks. MCA blood flow was measured by pulsed Doppler sonography 3 times during each fetal...

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Bibliographic Details
Published in:American journal of obstetrics and gynecology 2004-10, Vol.191 (4), p.1283-1287
Main Authors: Sallout, Bahauddin I., Fung, Karen Fung Kee, Wen, Shi W., Medd, Laura M., Walker, Mark C.
Format: Article
Language:English
Subjects:
Behavior
Biological and medical sciences
Blood Flow Velocity
Cardiotocography
Cerebral Doppler
Female
Fetus
Fetus - physiology
Gynecology. Andrology. Obstetrics
Heart Rate, Fetal - physiology
Humans
Medical sciences
Middle Cerebral Artery - diagnostic imaging
Middle Cerebral Artery - embryology
Middle Cerebral Artery - physiology
Peak systolic velocity
Pregnancy
Pulsatile Flow
Ultrasonography, Prenatal
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Summary:This study was undertaken to determine whether is there a difference in the middle cerebral artery peak systolic velocity (MCA PSV) between active and resting behavioral states in healthy fetuses aged 30 to 32 weeks. MCA blood flow was measured by pulsed Doppler sonography 3 times during each fetal behavioral state (active and resting). The average during active state was compared during the resting state. Statistical analysis was performed by paired t test. During the fetal active state, there was a significant increase in the mean PSV (51.59 cm/s vs 46.95 cm/s, P < .0001) and mean end-diastolic velocity (9.59 cm/s vs 7.98 cm/s, P=.0015), and a significant decrease in the mean pulsatility index (PI) (2.07 vs 2.19, P=.0226) and the mean resistance index (0.83 vs 0.85, P=.0481). Healthy preterm fetuses have a significantly higher MCA PSV during the active state. Activity state should be considered when interpreting MCA Doppler indices.
ISSN:0002-9378
1097-6868
DOI:10.1016/j.ajog.2004.03.018