scholarly journals Middle cerebral artery Doppler indices at different sites: prediction of umbilical cord gases in prolonged pregnancies

2004 ◽  
Vol 24 (5) ◽  
pp. 529-533 ◽  
Author(s):  
F. Figueras ◽  
M. Lanna ◽  
M. Palacio ◽  
L. Zamora ◽  
B. Puerto ◽  
...  
Keyword(s):  
Middle Cerebral Artery ◽  
Umbilical Cord ◽  
Cerebral Artery ◽  
Doppler Indices

P07.17: Middle cerebral artery Doppler indices at different sites: association with umbilical cord gases in prolonged pregnancies

2004 ◽  
Vol 24 (3) ◽  
pp. 312-312
Author(s):  
F. Figueras ◽  
M. Palacio ◽  
L. Zamora ◽  
B. Puerto ◽  
O. Coll ◽  
...  
Keyword(s):  
Middle Cerebral Artery ◽  
Umbilical Cord ◽  
Cerebral Artery ◽  
Doppler Indices

scholarly journals Doppler Flow Velocity Indices (RI, PI, S/D & PSV) of Fetal Middle Cerebral Artery in Normal Pregnancies: Correlation with Gestational Age of 20 to 40 Weeks

2012 ◽  
Vol 2 (2) ◽  
pp. 77-80
Author(s):  
Md Abu Taher ◽  
Nuzhat Tasmin ◽  
AS Mohiuddin ◽  
Md Mohit Ul Alam ◽  
Md Mofazzal Sharif ◽  
...  
Keyword(s):  
Middle Cerebral Artery ◽  
Flow Velocity ◽  
Cerebral Artery ◽  
Gestational Age ◽  
Resistance Index ◽  
Peak Systolic Velocity ◽  
Doppler Flow ◽  
Significant Difference ◽  
Before And After ◽  
Doppler Indices

This observational type of descriptive study was carried out in the Department of Radiology and Imaging, BIRDEM selecting 70 Bangladeshi pregnant babies with the aim to find out the normogram of foetal middle cerebral artery Doppler flow velocity indices and correlation between Doppler flow velocity indices [Resistance Index (RI), Pulsatility Index (PI), Systolic/Diastolic ratio (S/D) & Peak Systolic Velocity (PSV)] of foetal middle cerebral artery and gestational age in normal pregnancies of 20 to 40 weeks. It was observed that RI, PI and S/D were decreased with the advance of gestational age but PSV was increases with the advance of gestational age. Statistical analyses showed there were significant difference between mean PSV, RI and PI before and after 25 weeks of gestation. No significant difference was found between mean S/D before and after 25 weeks of gestation. It was observed from Correlation analysis between Doppler indices with independent gestational age that all the Doppler indices of foetal middle cerebra artery was positively correlated with the whole gestation period. The statistical analysis showed only PSV and RI were significantly correlated with the gestational age. Simple regression analysis between dependent Doppler index with independent gestational age before and after 25 weeks revealed that all the Doppler indices had positive relationship with the corresponding gestational age but relationship between PSV and PI (before 25 weeks) with their corresponding gestational ages were only statistically significant.DOI: http://dx.doi.org/10.3329/birdem.v2i2.12306 Birdem Med J 2012; 2(2) 77-80

scholarly journals Color doppler indices of proximal and distal parts of middle cerebral artery in fetuses with intrauterine growth restriction

10.19082/4378 ◽  
2017 ◽  
Vol 9 (5) ◽  
pp. 4378-4383
Author(s):  
Farhad Naleini ◽  
Mohammad Farzizadeh ◽  
Abdolmajid Taheri ◽  
Ayoob Rostamzadeh ◽  
Daryoush Fatehi
Keyword(s):  
Middle Cerebral Artery ◽  
Cerebral Artery ◽  
Intrauterine Growth Restriction ◽  
Color Doppler ◽  
Growth Restriction ◽  
Intrauterine Growth ◽  
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.

Middle Cerebral Artery Doppler Changes following Fetal Transfusion Performed with and without Fetal Anesthesia

2017 ◽  
Vol 35 (07) ◽  
pp. 682-687 ◽  
Author(s):  
Kristen Uquillas ◽  
Myrna Aboudiab ◽  
Lisa Korst ◽  
Arlyn Llanes ◽  
Brendan Grubbs ◽  
...  
Keyword(s):  
Middle Cerebral Artery ◽  
Umbilical Cord ◽  
Cerebral Artery ◽  
Gestational Age ◽  
Peak Systolic Velocity ◽  
Fetal Anemia ◽  
Intravenous Anesthesia ◽  
Intrauterine Transfusion ◽  
The Difference ◽  
The Relationship

Objective The objective of this study was to test the association between fetal intravenous anesthesia and the change in middle cerebral artery peak systolic velocity (MCA-PSV) in patients undergoing intrauterine transfusion (IUT) for suspected fetal anemia. Study Design We retrospectively examined data from all patients who underwent IUT via umbilical cord route from 2007 to 2016. We calculated the change of the MCA-PSV multiple of median (MoM) as the difference in MCA-PSV MoM between the pre- and immediate postoperative measurements for the first IUT. The change in MCA-PSV MoM was compared between those who did and did not receive fetal anesthesia using Kruskal–Wallis' testing. Results Of 62 patients, 37 (59.7%) received intravenous fetal anesthesia and 25 (40.3%) did not. The change in MCA-PSV MoM did not differ between those who did and did not receive fetal anesthesia (median: 0.57 [interquartile range, IQR: +0.42 to +0.76] vs. median 0.57 [IQR: +0.40 to +0.81], p = 1.000). The relationship remained insignificant when stratifying by gestational age, length of procedure, initial MCA-PSV, and when excluding hydropic fetuses. Conclusion Among women undergoing IUT, there was no evidence that the use of fetal anesthesia was associated with a change in the pre- versus postoperative change in MCA-PSV MoM.

The effect of nuchal umbilical cord on fetal cardiac and cerebral circulation-cross-sectional study

2021 ◽  
Vol 0 (0) ◽  
Author(s):  
Julia Murlewska ◽  
Oskar Sylwestrzak ◽  
Przemysław Poszwa ◽  
Maria Respondek-Liberska
Keyword(s):  
Middle Cerebral Artery ◽  
Umbilical Cord ◽  
Cerebral Artery ◽  
Gestational Age ◽  
Cerebral Circulation ◽  
Fetal Heart ◽  
Heart Function ◽  
Control Groups ◽  
Tei Index ◽  
And Control

Abstract Objectives The subject of our analysis is the influence of umbilical cord collision around the fetal neck on the fetal heart function and cerebral circulation. Methods Our study was carried out on a group of 115 fetuses from single pregnancies with physiological course, during the 15th to 40th week of pregnancy. In our analysis, we examined the following parameters: Tei index for right ventricle, Tei index for left ventricle with Tei index components: isovolumetric contraction time, isovolumetric relaxation time, ejection time and cardiothoracic area ratio, middle cerebral artery peak systolic velocity (PS MCA), middle cerebral artery pulsatility index (PI MCA). Gestational age in our study was: 28+2±34. The study group of patients with fetal umbilical cord around neck group (fUCAN) included 38 fetuses (20 males, 18 females). The control group of patients with no fetal umbilical cord around neck group (NfUCAN) included 77 fetuses (43 males, 34 females). Results In our study, we found no significant differences in the values obtained: Tei LV in fUCAN: 0.5±0.1 vs. in NfUCAN: 0.5±0.1; p=0.42), Tei RV in fUCAN: 0.5±0.2 vs. in NfUCAN: 0.4±0.1; (p=0.2). Tricuspid valve regurgitation-TR was observed with the following frequency: fUCAN: 7/38, 18% vs. NfUCAN: 13/77, 17%; p=0.8. MCA PS in study fUCAN group was significantly higher than in NfUCAN (40.2±11.5 vs. 32.5±9.5; p=0.003), although other hemodynamic and clinical variables did not differ between the study and control groups. Conclusions The fetal nuchal umbilical cord collision did not affect the fetal heart function expressed as Tei index, at the time of fetal heart examination (at mean gestational age 29+4 weeks). The fUCAN group presented elevated PS MCA, which was not related to other hemodynamic and clinical variables between the study and control groups.

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