scholarly journals Umbilical Artery and Middle Cerebral Artery and Cerebroplacental Ratio for Doppler Indices’ Reference Ranges

2021 ◽  
Vol 15 (7) ◽  
pp. 1581-1586
Author(s):  
Arjuamnd Sultana ◽  
M. Nawaz Anjum ◽  
Naveed Asad ◽  
Rizwan Ul Haq ◽  
Taimoor Shahid ◽  
...  
Keyword(s):  
Statistical Analysis ◽  
Middle Cerebral Artery ◽  
Cerebral Artery ◽  
Reference Values ◽  
Methodological Quality ◽  
Umbilical Artery ◽  
Class Interval ◽  
Cerebroplacental Ratio ◽  
Doppler Indices

Aim: To investigate the reference values of Doppler indices for umbilical artery and Middle Cerebral Artery as well as Cerebro-placental Ratio and specifically, to evaluate the quality of methodology used on which these reference values are grounded, with the help of already established quality standards for research design, statistical analysis as well as methods of results reporting. Methodology: The methodological quality of the full-text versions of eligible studies was assessed independently by the same reviewers and a medical statistician (E.S.U.). Disagreements were resolved by consensus or consultation with two other reviewers (A.T.P. and E.F.). Quality criteria for evaluation methodologies of the published articles was developed which was based on the already available research publication25,36,37. The methodology evaluation criteria was segregated into two levels, one is study design and the other one is statistics used as well as its reporting methods. Total no. of criteria of quality were 24 to be evaluated. Results: Generally, methodological quality score was parallel for the research articles designed to evaluate umbilical artery range (median 42%; range 13.8–63.8%). For the studies focusing on middle cerebral artery range showed a median of 48% with a Class interval of 22.1–72.1% whereas the median score of cerebroplacental ratio was 47.1% with a Class interval of 34.6–55.5%. Conclusion: Rigorous methodology of this review study is the major strength, which is consisted of a standard and well developed methodology of scoring the quality of studies according to their methodology selection as well as the statistical analysis and the level of its interpretation. Keywords: Umbilical artery, Middle Cerebral Artery, Cerebro-placental Ratio, Doppler indices

Hemodynamic Changes in Umbilical Artery and Middle Cerebral Artery With Oligohydramnios in Third Trimester of Pregnancy

2021 ◽  
pp. 875647932110519
Author(s):  
Zara Jabeen ◽  
Raham Bacha ◽  
Zain-ul-Hassan ◽  
Mehreen Fatima ◽  
Iqra Manzoor ◽  
...  
Keyword(s):  
Middle Cerebral Artery ◽  
Cerebral Artery ◽  
Umbilical Artery ◽  
Abdominal Wall Defect ◽  
Resistive Index ◽  
Third Trimester ◽  
Hemodynamic Changes ◽  
Cross Sectional ◽  
The Mean ◽  
Doppler Indices

Objective: The objective of this study was to determine the hemodynamic changes in the umbilical artery (UA) and middle cerebral artery (MCA) with oligohydramnios, during third trimester of pregnancy. Materials and Methods: A cross-sectional descriptive study was done in a perinatal ultrasound center, over a 9-month period. The participant sample size was 64, and all of the women were conveniently consented and selected for the study. All individuals were referred for obstetrical sonography in the third trimester, with oligohydramnios. All fetal anomalies, such as a neural tube defect, dwarfism, an abdominal wall defect, were excluded from the study. Results: The mean systolic to diastolic (S/D) ratio for the UA was 3.01, within a range of 1.49 to 5.60 (± 0.79 SD). The mean pulsatility index (PI), of the UA, was 1.11, within a range of 0.41 to 5.51 cm (± 0.64 SD). The mean resistive index (RI) of the UA was 0.66, within a range of 0.33 to 1.25 cm (± 0.13 SD). The mean S/D ratio of the MCA was 5.68, within a range of 2.05 to 26.10 (± 3.10 SD). The mean PI of the MCA was 1.67 within a range of 0.75 to 2.55 cm (± 0.45 SD). The mean resistive index (RI), of the UA, was 0.82 within a range of 0.51 to 1.77 cm (± 0.82 SD). Conclusion: The Doppler indices may rise as pregnancy advances, especially in fetuses with oligohydramnios. In these types of patients, the flow within the MCA may decrease, with an increase in the gestational age. Consequently, it appears that oligohydramnios may lead to vascular remodeling of the UA and MCA.

The Effect of Antenatal Vaginal Progesterone Administration on Uterine, Umbilical, and Fetal Middle Cerebral Artery Doppler Flow: A Cohort Study

2019 ◽  
Vol 37 (05) ◽  
pp. 491-496
Author(s):  
Ahmed M. Maged ◽  
Amira Y. Shoab ◽  
Eman A. Hussein ◽  
Ahmed H. Alsawaf ◽  
Doaa S. Mahmoud ◽  
...  
Keyword(s):  
Cohort Study ◽  
Middle Cerebral Artery ◽  
Cerebral Artery ◽  
Uterine Artery ◽  
Umbilical Artery ◽  
Resistance Index ◽  
Doppler Measurement ◽  
Vaginal Progesterone ◽  
Before And After ◽  
Doppler Indices

Abstract Objective This study aimed to evaluate the effect of vaginal progesterone (P) administration during the second and third trimesters of pregnancy on Doppler velocimetry of uterine, umbilical, and middle cerebral vessels. Study Design A prospective cohort study conducted on 80 women at risk for preterm labor. Uterine artery, umbilical artery, and middle cerebral artery (MCA) Doppler indices were measured before and after 1 week of administration of 200 mg twice daily vaginal P. The primary outcome parameter was the change of MCA pulsatility index (PI) after P administration. Secondary outcomes included changes in uterine artery and umbilical artery Doppler measurement. Results There was no significant changes of umbilical artery resistance index (RI) (0.69 ± 0.049 vs. 0.68 ± 0.041), umbilical artery PI (1.14 ± 0.118 vs. 1.11 ± 0.116), uterine artery RI (0.66 ± 0.12 vs. 0.66 ± 0.107), uterine artery PI (1.00 ± 0.26 vs. 1.016 ± 0.24), and MCA PI (1.27 ± 0.18 vs. 1.26 ± 0.23) measurements before and after 1 week of P administration, respectively. Conclusion Administration of vaginal P has no significant effects on uterine artery, umbilical artery, and MCA Doppler indices.

scholarly journals VP28.11: Doppler changes in umbilical artery, middle cerebral artery, cerebroplacental ratio and ductus venosus in fetuses with open spina bifida

2020 ◽  
Vol 56 (S1) ◽  
pp. 181-181
Author(s):  
M. Martinez‐Rodriguez ◽  
H. López‐Briones ◽  
J. Luna‐García ◽  
R. Villalobos‐Gómez ◽  
A. Gamez‐Varela ◽  
...  
Keyword(s):  
Spina Bifida ◽  
Middle Cerebral Artery ◽  
Cerebral Artery ◽  
Umbilical Artery ◽  
Ductus Venosus ◽  
Cerebroplacental Ratio ◽  
Open Spina Bifida

scholarly journals Comparative performance of Cerebral Perfusion Ratio as compared to MCA PI and UA PI in prediction of adverse perinatal outcomes in intra uterine growth restricted fetuses

2019 ◽  
Vol 7 (8) ◽  
pp. 2887
Author(s):  
Jyotsna S. Shinde ◽  
Madan P. Manmohan ◽  
Sanjay S. Pasoria ◽  
Thahir V. Ummer
Keyword(s):  
Middle Cerebral Artery ◽  
Cerebral Artery ◽  
Cerebral Perfusion ◽  
Umbilical Artery ◽  
Perinatal Outcomes ◽  
Clinical History ◽  
Comparative Performance ◽  
Uterine Growth ◽  
Adverse Perinatal Outcomes ◽  
Doppler Indices

Background: Intra uterine growth restriction (IUGR) is a common clinical sign seen due to chronic foetal hypoxemia and is considered a major contributor of perinatal morbidity and mortality. The aim of the present study was to determine and compare the sensitivity and specificity of umbilical artery pulsatility index (UA PI), middle cerebral artery (MCA) PI and cerebral perfusion ratio (CPR) in predicting adverse and poor perinatal outcomes in fetuses with IUGR.Methods: The study included 100 pregnant women with post 24 weeks of gestation with clinical history of IUGR.  Doppler examination parameters, including waveforms and measurements, of the umbilical artery, middle cerebral artery were recorded. The Cerebral Perfusion Ratio (CPR) was calculated from MCA PI and UA PI and a final comparison of accuracy of Doppler indices was done with perinatal outcome.Results: The sensitivity of the UA PI was higher (49.3%) than that of the MCA PI (43.6%) and the CPR (37.7%). The specificity of the CPR was higher (87.1%) than that of the MCA PI (83.9%) and the UA PI (74.2%).Conclusions: From the findings of the study, it can be concluded that UA PI is the most sensitive and CPR is the most specific parameter in predicting adverse perinatal outcomes in IUGR fetuses. Thus, in addition to pulsatility indices, CPR should be used as a tool for surveillance and included in the routine reporting formats of obstetric Doppler studies.

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