Transverse Cerebellar Diameter Abdominal Circumference Ratio - A parameter to identify Foetal Growth Reduction

Kushtagi, Pralhad and *, LN Chethana (2001) Transverse Cerebellar Diameter Abdominal Circumference Ratio - A parameter to identify Foetal Growth Reduction. Obs & Gynae Today , 6 (2). pp. 92-94. ISSN 0971-8133

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Abstract

To evaluate foetal transverse cerebellar diameter/ abdominal circumference (TCD/AC) ratio in identifying intrauterine growth restriction (IUGR). The relationship between TCD and AC in second half of pregnancy was sonologically studied in 235 well-dated pregnancies. Cases studied were grouped as non-IUGR and IUGR based on infant birth weights. Ability of one cut-off value for TCD/AC ratio with reference to the confidence limits and femur length/ abdominal circumference (FL/AC) ratio was tested to pick up IUGR. Gravidae in IUGR group had higher proportion of nulliparae (60.2%), associated with more antenatal complications (11.4%) and birth of female child (57.8%) than those in non-IUGR group (40.3, 4.5 and 42 percents, respectively). TCD/AC ratio showed increasing trend with increase in gestational period (r2=0.91970, p<0.0001), higher values for fetuses in IUGR group (overall mean of 14.66 and 16.04 for non-IUGR and IUGR groups). TCD/AC ratio with cut-off at 16 was found to be highly specific and to have higher positive predictive value when compared to lesser cut-off reading and FL/AC ratio. TCD/AC ratio should be added to the armamentarium for sonographic detection of IUGR because it is not dependent on knowledge of the true gestational age has higher positive predictive value.

Item Type: Article
Uncontrolled Keywords: IUGR; TCD/AC ratio
Subjects: Medicine > KMC Mangalore > Obstetrics & Gynaecology
Depositing User: KMCMLR User
Date Deposited: 06 Jun 2012 07:05
Last Modified: 06 Jun 2012 07:05
URI: http://eprints.manipal.edu/id/eprint/76565

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