Objective
The objective of the study was to compare Doppler ultrasound measurements of the fetal
middle cerebral artery peak systolic velocity (MCA-PSV) obtained at a 0° angle of
insonation to assessment at 30° and 30° with angle correction.
Study Design
Patients between 14 and 36 weeks' gestation were enrolled (n = 66). MCA-PSV measurements
were assessed at 0°, 30°, and 30° with angle correction. The data were analyzed using
a mixed model adjusted for gestational age. Pairwise comparisons of mean MCA-PSV measurements
were made using the Tukey multiple comparison test.
Results
All measurements were obtained for 50 fetuses (76%). Mean MCA-PSV measurements were
statistically different between 0° vs 30° (P = .03 to < .001) but not between 0° vs 30° with angle correction (P = .34-.99) at each of the 5 gestational age groupings.
Conclusion
Assessment of the MCA-PSV at 0° and 30° with angle correction provides comparable
measurements during the second and third trimester of pregnancy.
Key words
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Article Info
Publication History
Accepted:
November 5,
2008
Received in revised form:
October 1,
2008
Received:
June 20,
2008
Footnotes
This study was supported in part by the Bowes/Cefalo Young Researcher Award-Center for Maternal and Infant Health, University of North Carolina, and the Medical Alumni Endowment Fund, University of North Carolina, Chapel Hill, NC.
Cite this article as: Ruma MS, Swartz AE, Kim E, et al. Angle correction can be used to measure peak systolic velocity in the fetal middle cerebral artery. Am J Obstet Gynecol 2009;200:397.e1-397.e3.
Identification
Copyright
© 2009 Mosby, Inc. Published by Elsevier Inc. All rights reserved.
