Difference between near-field and far-field of middle cerebral artery doppler pulsatility index and peak systolic velocity: a prospective study

Abstract

Difference between near-field and far-field of middle cerebral artery doppler pulsatility index and peak systolic velocity: a prospective study Duygu Adıyaman1, * , Bahar Konuralp Atakul1 , Melda Kuyucu1 , Hakan Gölbaşı1 , Atalay Ekin1 1 Tepecik Training and Research Hospital, Department of Obstetrics and Gynecology, Division of Perinatology, 35170 Izmir, Turkey *Correspondence: duyguagca@gmail.com (Duygu Adıyaman) DOI:10.31083/j.ceog.2021.01.2228 This is an open access article under the CC BY 4.0 license (https://creativecommons.org/licenses/by/4.0/). Submitted: July 17, 2020 Revised: October 19, 2020 Accepted: October 21, 2020 Published: February 15, 2021 Objective: We purposed to investigate the diȞference between nearfield and far-field of PI (pulsatility index) and peak systolic velocity (PSV) of the middle cerebral artery (MCA) that are important in the management of fetal growth restriction and fetal anemia. Methods: This prospective study was conducted with 130 single uncomplicated pregnancies. Doppler was applied to near-and far-field of proximal MCA while PSV and PI were recorded and compared between two sides as well as according to body mass index (BMI) and gestational weeks of participants. Results: There was no statistically significant diȞference between near and far-fields of MCA PI (P = 0.75). However, a statistically significant diȞference in PSV was observed (P = 0.03), and this was especially noticeable in women with normal BMI (P = 0.009). On the other hand, there was no diȞference between MCA PI or PSV in women with a BMI higher than 25. Also, no significant difference was observed between groups, which were subcategorized according to gestational weeks. Conclusions: Our data suggest that the far-field PSV values may be higher than near-field MCA PSV values; sonographers should bear in mind that while far and near-field PSV can diȞfer, conversely MCA PI can safely be assessed from both the near and far-fields of MCA in case of technical diȞficulty. Keywords Doppler ultrasound; Middle cerebral artery; Peak systolic velocity; Pulsatility index