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Angle Correction Can Be Used to Measure Peak Systolic Velocity in the Fetal Middle Cerebral Artery

Citation

Ruma, Michael S.; Swartz, Anthony E.; Kim, Eunhee; Herring, Amy H.; Menard, M. Kathryn; & Moise, Kenneth J., Jr. (2009). Angle Correction Can Be Used to Measure Peak Systolic Velocity in the Fetal Middle Cerebral Artery. American Journal of Obstetrics & Gynecology, 200(4), 397.e1-3.

Abstract

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 degrees angle of insonation to assessment at 30 degrees and 30 degrees with angle correction.
STUDY DESIGN: Patients between 14 and 36 weeks' gestation were enrolled (n = 66). MCA-PSV measurements were assessed at 0 degrees, 30 degrees, and 30 degrees 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 degrees vs 30 degrees (P = .03 to < .001) but not between 0 degrees vs 30 degrees with angle correction (P = .34-.99) at each of the 5 gestational age groupings.
CONCLUSION: Assessment of the MCA-PSV at 0 degrees and 30 degrees with angle correction provides comparable measurements during the second and third trimester of pregnancy.

URL

http://dx.doi.org/10.1016/j.ajog.2008.11.002

Reference Type

Journal Article

Year Published

2009

Journal Title

American Journal of Obstetrics & Gynecology

Author(s)

Ruma, Michael S.
Swartz, Anthony E.
Kim, Eunhee
Herring, Amy H.
Menard, M. Kathryn
Moise, Kenneth J., Jr.