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American Journal of Oral Medicine and Radiology

Volume 5, Issue 2, 2018
Mcmed International
American Journal of Oral Medicine and Radiology
Issn
XXX-XXXX (Print), 2394 - 7721 (Online)
Frequency
bi-annual
Email
editorajomr@mcmed.us
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Abstract
Title
BIOMETRIC PARAMETER IN ESTIMATION OF THE GESTATIONAL AGE AMONG IUGR: A ULTRASOUND BASED STUDY
Author
Shivaraj M Ananthareddy* and Arjun Bahaddur
Email
shiv21anath@gmail.com
keyword
Transcerebellar diameter (TCD), Gestational age, Intrauterine growth retardation (IUGR).
Abstract
The cerebellum is well protected in the fetal head and it is the last organ to be affected by a decrease in blood flow. The cerebellum, as a part of the brain, was spared along with the rest of brain in asphyxiated primates. The report revealed that in the present of acute asphyxia, cerebellar blood flow remains unchanged as a consequence of redistribution of cardiac output. In the human fetus, cerebellar growth may be least affected by intrauterine growth retardation (IUGR), and the measurement of the TCD appears to be the most reliable biometric parameter in predicting true gestational age. A study was done on the pregnant women between 15 to 40 weeks who presented to our department for ultrasound examination over a period of one year. All pregnant women were evaluated with complete history, clinical examination and ultrasonography. The disparity in gestational age in between the predicted by transverse cerebellar diameter and that predicted by the remaining biometric parameters was consistently greater than 2.5 weeks that is greater than 2SD above the mean. Additionally the measurements of BPD, AC and FL were well below normal range for the gestational age in most of the cases. Transcerebellar diameter is an added advantage in causes of IUGR pregnancies as it correlates well with the gestational age as compared to other growth parameters .TCD can also be used as a single growth parameter to predict the gestational age using the various formulas obtained and nomograms both in normal and IUGR pregnancies.
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