The Experts below are selected from a list of 291 Experts worldwide ranked by ideXlab platform
Diane M. Twickler - One of the best experts on this subject based on the ideXlab platform.
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ultrasonographic prediction of fetal outcome in suspected skeletal dysplasias with use of the femur length to Abdominal Circumference ratio
American Journal of Obstetrics and Gynecology, 1998Co-Authors: Ronald M. Ramus, Lisa B. Martin, Diane M. TwicklerAbstract:OBJECTIVE: Our purpose was to determine whether the femur length-to-Abdominal Circumference ratio can be used antenatally to predict a lethal skeletal dysplasia. STUDY DESIGN: All obstetric sonograms performed from January 1990 to October 1995 were reviewed (44,020 studies) to find those scans suggestive of a skeletal dysplasia. Thirty patients were identified. The femur length/Abdominal Circumference ratio was then calculated from each patient's initial and subsequent sonograms. Birth outcomes were obtained on the 27 patients who elected to continue their pregnancies. RESULTS: All fetuses with a lethal skeletal dysplasia (n = 12) had a ratio 0.18. The 1 fetus with a ratio 0.16 was found to have a lethal skeletal dysplasia. This information may be useful in counseling women when ultrasonography suggests the diagnosis of a skeletal dysplasia.
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Ultrasonographic prediction of fetal outcome in suspected skeletal dysplasias with use of the femur length–to–Abdominal Circumference ratio
American journal of obstetrics and gynecology, 1998Co-Authors: Ronald M. Ramus, Lisa B. Martin, Diane M. TwicklerAbstract:OBJECTIVE: Our purpose was to determine whether the femur length-to-Abdominal Circumference ratio can be used antenatally to predict a lethal skeletal dysplasia. STUDY DESIGN: All obstetric sonograms performed from January 1990 to October 1995 were reviewed (44,020 studies) to find those scans suggestive of a skeletal dysplasia. Thirty patients were identified. The femur length/Abdominal Circumference ratio was then calculated from each patient's initial and subsequent sonograms. Birth outcomes were obtained on the 27 patients who elected to continue their pregnancies. RESULTS: All fetuses with a lethal skeletal dysplasia (n = 12) had a ratio 0.18. The 1 fetus with a ratio 0.16 was found to have a lethal skeletal dysplasia. This information may be useful in counseling women when ultrasonography suggests the diagnosis of a skeletal dysplasia.
Ronald M. Ramus - One of the best experts on this subject based on the ideXlab platform.
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ultrasonographic prediction of fetal outcome in suspected skeletal dysplasias with use of the femur length to Abdominal Circumference ratio
American Journal of Obstetrics and Gynecology, 1998Co-Authors: Ronald M. Ramus, Lisa B. Martin, Diane M. TwicklerAbstract:OBJECTIVE: Our purpose was to determine whether the femur length-to-Abdominal Circumference ratio can be used antenatally to predict a lethal skeletal dysplasia. STUDY DESIGN: All obstetric sonograms performed from January 1990 to October 1995 were reviewed (44,020 studies) to find those scans suggestive of a skeletal dysplasia. Thirty patients were identified. The femur length/Abdominal Circumference ratio was then calculated from each patient's initial and subsequent sonograms. Birth outcomes were obtained on the 27 patients who elected to continue their pregnancies. RESULTS: All fetuses with a lethal skeletal dysplasia (n = 12) had a ratio 0.18. The 1 fetus with a ratio 0.16 was found to have a lethal skeletal dysplasia. This information may be useful in counseling women when ultrasonography suggests the diagnosis of a skeletal dysplasia.
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Ultrasonographic prediction of fetal outcome in suspected skeletal dysplasias with use of the femur length–to–Abdominal Circumference ratio
American journal of obstetrics and gynecology, 1998Co-Authors: Ronald M. Ramus, Lisa B. Martin, Diane M. TwicklerAbstract:OBJECTIVE: Our purpose was to determine whether the femur length-to-Abdominal Circumference ratio can be used antenatally to predict a lethal skeletal dysplasia. STUDY DESIGN: All obstetric sonograms performed from January 1990 to October 1995 were reviewed (44,020 studies) to find those scans suggestive of a skeletal dysplasia. Thirty patients were identified. The femur length/Abdominal Circumference ratio was then calculated from each patient's initial and subsequent sonograms. Birth outcomes were obtained on the 27 patients who elected to continue their pregnancies. RESULTS: All fetuses with a lethal skeletal dysplasia (n = 12) had a ratio 0.18. The 1 fetus with a ratio 0.16 was found to have a lethal skeletal dysplasia. This information may be useful in counseling women when ultrasonography suggests the diagnosis of a skeletal dysplasia.
R.d. Wilson - One of the best experts on this subject based on the ideXlab platform.
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Suspected skeletal dysplasias: Femur length to Abdominal Circumference ratio can be used in ultrasonographic prediction of fetal outcome
American journal of obstetrics and gynecology, 1997Co-Authors: A. Rahemtullah, B. Mcgillivray, R.d. WilsonAbstract:Abstract OBJECTIVES: Skeletal dysplasias are a group of bone growth disorders, some of which can be recognized prenatally. Certain types of skeletal dysplasias result in a lethal fetal outcome. The ability to predict this outcome prenatally would be important in counseling parents. This study evaluated the ratio of femur length to Abdominal Circumference as a predictor of fetal outcome in cases of suspected skeletal dysplasia. STUDY DESIGN: This 3-year retrospective study identified 18 cases of prenatally suspected skeletal dysplasia from a population of approximately 35,000 fetuses undergoing prenatal ultrasonography. The femur length/Abdominal Circumference ratio was calculated and compared with fetal-neonatal outcomes and diagnoses. RESULTS: Eighteen cases of suspected skeletal dysplasia were identified, and the femur length/Abdominal Circumference ratio was found to be a good predictor of fetal outcome independent of gestational age. A ratio CONCLUSIONS: The femur length/Abdominal Circumference ratio may be useful to predict a lethal fetal outcome when ultrasonography indicates a possible skeletal dysplasia. (Am J Obstet Gynecol 1997;177:864-9.)
Sedat Işik - One of the best experts on this subject based on the ideXlab platform.
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Transverse Cerebellar Diameter and Transverse Cerebellar Diameter/Abdominal Circumference Index for Assessing Fetal Growth
Fetal diagnosis and therapy, 1996Co-Authors: Gülçin Dilmen, Mete F. Toppare, Nilgün Öztürk Turhan, Muazzez Öztürk, Sedat IşikAbstract:In a prospective study of 330 pregnant women, measurements of the transverse cerebellar diameter (TCD), Abdominal Circumference (AC), biparietal diameter (BPD), head Circumference (HC) and TCD/AC rati
Judy Sipos - One of the best experts on this subject based on the ideXlab platform.
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Ultrasonographic detection of abnormal fetal growth with the gestational age-independent, transverse cerebellar diameter/Abdominal Circumference ratio
American journal of obstetrics and gynecology, 1994Co-Authors: William J. Meyer, Daniel W. Gauthier, Viswanathan Ramakrishnan, Judy SiposAbstract:Objectives: We prospectively evaluated the accuracy of a gestational, age-independent method of detecting abnormal growth, the transverse cerebellar diameter/Abdominal Circumference ratio, and compared this with standard ultrasonographic methods of growth assessment. Study Design: We prospectively studied 825 low-risk obstetric patients and 250 patients having risk factors for fetal macrosomia ( n = 92) or growth retardation ( n = 158). Measured fetal parameters included the biparietal diameter, head Circumference, transverse cerebellar diameter, Abdominal Circumference, and femur length. The estimated fetal weight, head Circumference/Abdominal Circumference, cerebellar diameter/Abdominal Circumference, and femur length/Abdominal Circumference ratios were calculated. Reference curves for these parameters were created from a cross-sectional analysis of the low-risk group. Univariate analysis was used to determine the sensitivity, specificity, predictive values, and odds ratios of each individual parameter in identifying a small- or large-for-gestational-age infant. A multivariate logistic regression model with a variable selection procedure was then used to determine whether significance remained when we controlled for other parameters. Results: Within the low-risk group, the transverse cerebellar/Abdominal Circumference ratio was gestational age independent between 14 and 42 weeks with a mean of 13.68 ± 0.96. A value exceeding 2 SD of the mean was significantly associated with birth or a small-for-gestational-age infant, being abnormal in 98% and 71 % of asymmetrically and symmetrically growth-retarded infants, respectively. Significance was maintained in the multivariate regression model. The ratio was not helpful in detecting the large-for-gestational-age infant. Conclusion: The fetal transverse cerebellar diameter/Abdominal Circumference ratio is an accurate, gestational age-independent method of identifying the small-for-gestational-age but not the large-for-gestational-age infant.
