Association of Fetal Middle Cerebral Artery Doppler Indices in Different Positions and Adverse Perinatal Outcomes [40T]

2019 ◽  
Vol 133 (1) ◽  
pp. 223S-223S
Author(s):  
Rodney Anthony McLaren ◽  
Bharati Kalgi ◽  
Chima Ndubizu ◽  
Shoshana Haberman
Keyword(s):  
Middle Cerebral Artery ◽  
Cerebral Artery ◽  
Perinatal Outcomes ◽  
Adverse Perinatal Outcomes ◽  
Doppler Indices

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.

The effect of maternal position on fetal middle cerebral artery Doppler indices and its association with adverse perinatal outcomes: a pilot study

2020 ◽  
Vol 48 (4) ◽  
pp. 317-321
Author(s):  
Rodney McLaren ◽  
Bharati Kalgi ◽  
Chima Ndubizu ◽  
Peter Homel ◽  
Shoshana Haberman ◽  
...  
Keyword(s):  
High Risk ◽  
Middle Cerebral Artery ◽  
Cerebral Artery ◽  
Repeated Measures ◽  
Adverse Outcome ◽  
Perinatal Outcomes ◽  
Low Risk ◽  
Doppler Velocity ◽  
Chronic Hypertension ◽  
Adverse Perinatal Outcomes

AbstractObjectiveThe aim of this study was to compare position-related changes in fetal middle cerebral artery (MCA) Doppler pulsatility indices (PI).MethodsA prospective study of 41 women with conditions associated with placental-pathology (chronic hypertension, pregestational diabetes, and abnormal analytes) and 34 women without those conditions was carried out. Fetal MCA Doppler velocity flow waveforms were obtained in maternal supine and left lateral decubitus positions. MCA PI Δ was calculated by subtracting the PI in the supine position from the PI in the left lateral position. Secondary outcomes included a composite of adverse perinatal outcomes (fetal growth restriction, oligohydramnios, and preeclampsia). χ2 and Student t-tests and repeated-measures analysis of variance were used.ResultsMCA PI Δ was significantly less for high-risk pregnant women ([P = 0.03]: high risk, left lateral PI, 1.90 ± 0.45 vs. supine PI, 1.88 ± 0.46 [Δ = 0.02]; low risk, left lateral PI, 1.90 ± 0.525 vs. supine PI, 1.68 ± 0.40 [Δ = 0.22]). MCA PI Δ was not significantly different between women who had a composite adverse outcome and women who did not have a composite adverse outcome (P = 0.843).ConclusionOur preliminary study highlights differences in position-related changes in fetal MCA PI between high-risk and low-risk pregnancies. These differences could reflect an attenuated ability of women with certain risk factors to respond to physiologic stress.

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 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

Placental elasticity assessment by point shear wave elastography in pregnancies with intrauterine growth restriction

2019 ◽  
Vol 47 (8) ◽  
pp. 841-846 ◽  
Author(s):  
Murat Akbas ◽  
Faik M. Koyuncu ◽  
Burcu Artunç-Ulkumen
Keyword(s):  
Pregnant Women ◽  
Shear Wave ◽  
Intrauterine Growth Restriction ◽  
Perinatal Outcomes ◽  
Shear Wave Elastography ◽  
Growth Restriction ◽  
Intrauterine Growth ◽  
The Mean ◽  
Adverse Perinatal Outcomes ◽  
Doppler Indices

Abstract Background Placental elasticity varies in different diseases. Our objective was to evaluate placental elasticity using point shear wave elastography (pSWE) in pregnancies with intrauterine growth restriction (IUGR). Methods A total of 66 pregnant women with IUGR and 81 healthy pregnant women were enrolled. Placental elasticity was measured using the transabdominal pSWE method. Ten measurements were made, and the mean was accepted as the mean placental elasticity value in each case. The results for IUGR pregnancies and controls were compared. Results The mean pSWE values were significantly higher in pregnancies with IUGR, which means that women with IUGR have stiffer placentas (P < 0.001). Furthermore, the pSWE values were significantly and positively correlated with Doppler indices and adverse perinatal outcomes. Conclusion The pregnancies with IUGR had stiffer placentas than the healthy controls. The utilization of pSWE for placental elasticity may be useful in the diagnosis and management of IUGR as a supplement to the existing ultrasonography methods.

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