Reference values for doppler parameters of the fetal anterior cerebral artery throughout gestation

J. A. Benavides-Serralde, E. Hernández-Andrade*, H. Figueroa-Diesel, D. Oros, L. A. Feria, M. Scheier, F. Figueras, E. Gratacós

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

24 Scopus citations

Abstract

Aim: To construct normal reference values for Doppler parameters in 2 anatomical segments of the fetal anterior cerebral artery (ACA) throughout pregnancy. Methods: The ACA was evaluated in 373 normally growing fetuses from 20 to 40 weeks of gestation. The first segment of the ACA (ACA-S1) was recorded just after its origin from the internal carotid artery in the same plane as the middle cerebral artery (MCA). The second segment (ACA-S2) was recorded distal to the outlet of the anterior communicating artery. Results: The ACA pulsatility index (PI) behaved similarly in both segments, with a constant increase until 28 weeks followed by a decrease until the end of pregnancy [ACA-S1 PI = 3.49 - 0.37 × gestational age (GA) - (0.0063 × GA2), SD = 0.6 - 0.061 × GA - (0.001 × GA2); ACA-S2 PI = 1.54 - 0.22 × GA - (0.0037 × GA2), SD = 0.206 + (0.0037 × GA)]. Peak systolic velocities in both segments showed a constant increase from 20 to 40 weeks of gestation. No significant differences were found between the 2 segments with regard to any Doppler parameter. However, the angle of insonation and the time spent on examination were significantly lower and reproducibility was better for ACA-S1. Conclusion: Despite showing similar Doppler values, ACA-S1 has a higher reliability than ACA-S2 and can be recorded in the same anatomical projection as the MCA.

Original languageEnglish
Pages (from-to)33-39
Number of pages7
JournalGynecologic and Obstetric Investigation
Volume69
Issue number1
DOIs
StatePublished - Jan 2010

Keywords

  • Anterior cerebral artery
  • Doppler
  • Fetus
  • Normal values

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