Why does computation of centiles from equations for umbilical artery and middle cerebral artery pulsatility index and cerebroplacental ratio from Fetal Medicine Foundation study of 72 387 fetuses not agree with tabular results?

2021 ◽  
Vol 57 (2) ◽  
pp. 349-350
Author(s):  
G. R. DeVore
Keyword(s):  
Middle Cerebral Artery ◽  
Cerebral Artery ◽  
Pulsatility Index ◽  
Umbilical Artery ◽  
Fetal Medicine ◽  
Cerebroplacental Ratio

scholarly journals Correlation of efficacy of cerebro placental ratio with adverse perinatal outcome in clinically suspected IUGR pregnancies

2018 ◽  
Vol 7 (5) ◽  
pp. 1808
Author(s):  
Geeta Singh ◽  
Neerja Gupta ◽  
Sangeeta Singhal ◽  
Pramod Kishor Sharma
Keyword(s):  
Middle Cerebral Artery ◽  
Cerebral Artery ◽  
Perinatal Outcome ◽  
Pulsatility Index ◽  
Umbilical Artery ◽  
Doppler Velocity ◽  
Wave Form ◽  
Adverse Perinatal Outcome ◽  
Diastolic Flow ◽  
Ultrasound Evaluation

Background: IUGR is a most common and complex problem in modern obstetrics. Most commonly use methods to assess fetal condition are BPP and NST which are not sensitive for predicting better perinatal outcome.  Present study was an effort to evaluate the role of ratio of pulsatility index (PI) of middle cerebral artery and umbilical artery which is called cerebro placental ratio as the most sensitive, specific and accurate predictor of adverse perinatal outcome in clinically suspected IUGR Pregnancies.Methods: 50 clinically suspected IUGR Pregnancies attending antenatal clinics Muzaffarnagar Medical College and Hospital, Muzaffarnagar were subjected to Doppler ultrasound evaluation Doppler velocity wave form of umbilical artery and fetal middle cerebral artery were obtained. Pulsatility index ratio of MCA and umbilical artery (cerebro placental ratio) was evaluated in each case. Abnormal ratio is defined as CPR<1.08 considered as cut of value. Ratio was coo related clinically with perinatal outcome.Results: Out of 50 antenatal cases, 63% neonates had birth weight <2.5 kg. There were 6 IUD’S and 44 live births, 9 neonates were admitted to NICU, 7 neonates had 5 min. APGAR score <7 and 13 neonates were born by emergency CS. Of the 6 IUDS, 4 cases had reversal of blood flow umbilical artery and 2 cases had absent diastolic flow. In all cases of reversal Diastolic flow, IUD occurred within 7 days of diagnosis. Conclusions: CPR is the most sensitive, specific and accurate parameter in prediction of adverse perinatal outcome and thus can help in decreasing perinatal mortality.

scholarly journals Reference ranges for umbilical and middle cerebral artery pulsatility index and cerebroplacental ratio in prolonged pregnancies

2004 ◽  
Vol 24 (6) ◽  
pp. 647-653 ◽  
Author(s):  
M. Palacio ◽  
F. Figueras ◽  
L. Zamora ◽  
J. M. Jiménez ◽  
B. Puerto ◽  
...  
Keyword(s):  
Middle Cerebral Artery ◽  
Cerebral Artery ◽  
Pulsatility Index ◽  
Reference Ranges ◽  
Cerebroplacental Ratio
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