The Experts below are selected from a list of 276 Experts worldwide ranked by ideXlab platform
Alon Shrim - One of the best experts on this subject based on the ideXlab platform.
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The Accuracy of Sonographic Fetal Head Circumference in Twin Pregnancies.
Journal of obstetrics and gynaecology Canada : JOGC = Journal d'obstetrique et gynecologie du Canada : JOGC, 2021Co-Authors: Rinat Gabbay-benziv, Saja Anabusi, Erez Nadir, Dalit Kamar, Mordechai Hallak, Alon ShrimAbstract:ABSTRACT Objective To assess the accuracy of sonographic estimation of fetal Head Circumference in twin gestations. Methods A retrospective analysis of sonographic evaluations of twin gestations >34 weeks, performed within 7 days of delivery, in a single university-affiliated medical centre. Sonographic Head Circumference was compared with neonatal Head Circumference. Measures of accuracy included systematic error, random error, proportion of estimates within 5% of neonatal Head Circumference, and reliability analysis. Accuracy of sonographic Head Circumference was compared between the first and second twin. Results Overall, 103 twin gestations were evaluated at a median of 4 days before delivery. The majority of twins were dichorionic-diamniotic (83%). Median gestational age at delivery was 37 weeks, with a median birthweight of 2645 grams for the first twin and 2625 grams for the second twin. For all fetuses, median sonographic Head Circumference was lower than the neonatal Head Circumference (first twin: 317.5 vs. 330 mm; second twin: 318.4 vs. 330 mm, P > 0.05 for both). Measures of accuracy showed no significant difference between first and second twin. There was no difference in the number of sonographic Head Circumference evaluations that were within 5% of the neonatal Head Circumference between fetuses (64% for both twins). Cronbach α value was higher for the second twin (0.746 vs. 0.613), suggesting higher accuracy for Head Circumference measurement for the second twin. Conclusion In our cohort, sonographic Head Circumference underestimated postnatal Head Circumference. Accuracy measurements were not significantly different between the first and second twin.
Shoji Kagami - One of the best experts on this subject based on the ideXlab platform.
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Head Circumference and body growth in autism spectrum disorders
Brain & development, 2010Co-Authors: Aya Fukumoto, Toshiaki Hashimoto, Kenji Mori, Yoshimi Tsuda, Kokichi Arisawa, Shoji KagamiAbstract:Abstract Research has shown that there is a relationship between increased Head Circumference and autism spectrum disorders (ASD). This study examined this relationship during the first year of life in subjects with ASD. We compared 280 children with ASD and 609 controls. In the ASD-male group, increases were observed in Head Circumference from 3 to 12 months, in height from 3 to 9 months, and in body weight from 3 to 6 and 12 months. On the other hand, in the ASD-female group increases in Head Circumference, in body height, and in body weight were only observed at 3 months. After adjusting for height, weight, and age, only the Head Circumference in the male ASD group was significantly increased from 6 to 9 months after birth, reaching a peak at 6 months after birth. No difference was found in the female ASD group. Although body overgrowth in the ASD group also started early after birth, the increase in Head Circumference was more marked than that in body growth. The values of physical measurements in the first year may be useful, minimally invasive parameters for the early detection of autism in combination with observing the timing of certain behaviors such as smiling, eye contact, crawling, pointing, and joint attention.
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Growth of Head Circumference in Autistic Infants During the First Year of Life
Journal of Autism and Developmental Disorders, 2008Co-Authors: Aya Fukumoto, Toshiaki Hashimoto, Kenji Mori, Yoshimi Tsuda, Kokichi Arisawa, Hiromichi Ito, Mio Nishimura, Masahito Miyazaki, Shoji KagamiAbstract:This study analyzed the increase in Head Circumference (HC) of 85 autistic infants (64 boys and 21 girls) during their first year of life. The data were collected from their “mother-and-baby” notebooks. This notebook is a medical record of the baby’s growth and development delivered to the parents of all babies born in Japan. This is a retrospective study which gathered the data from the notebooks after the diagnosis of autism. However, none of the babies were known to have autism at the time the records were made. The Head Circumference at birth of these autistic children was similar to that of the average found in a Japanese Government Study of 14,115 children. However, it showed a marked increase at 1 month after birth. The discrepancy reached a peak at 6 months, while the difference became smaller at 12 months. Body length (BL) and body weight (BW) began to increase at 3 months, although at a rate smaller than the Head Circumference increase.
M. Green - One of the best experts on this subject based on the ideXlab platform.
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Birth weight and Head Circumference standards for English twins.
Archives of disease in childhood, 1994Co-Authors: J. M. H. Buckler, M. GreenAbstract:This study was undertaken to provide reliable up to date information on birth weights and occipitofrontal Head Circumference measurements in relation to gestational age for English newborn twins. Records from 36 maternity units in England, mainly from 1988-92, have provided data on birth weights for over 19,000 newborn twins with gestational ages ranging from 23 to 41 weeks, and on Head Circumference measurements for over 5300 twins ranging from 28 weeks to 40 weeks' gestation. Centile charts have been produced for boy and girl twins showing the distribution of these values against gestational age. The findings confirm the greater weights of boys compared with girls throughout, increasing from a mean of about 50 g at early stages to 100 g later, in a similar way to that reported for singletons. Twins were lighter than comparable singletons by about 100 g at 24 weeks, increasing progressively to 4-500 g at 38 weeks' gestation. In contrast, differences in occipitofrontal Head Circumferences between singletons and twins were only evident with gestations longer than 35 weeks--and from 37 weeks' gestation onwards the mean Head Circumference of singletons exceeded that of twins by about 5 mm. It is recommended that in evaluating the significance of the birth weight of a twin in relation to gestation, twin standards such as the ones presented here should be used rather than those relating to singletons.
Francine Kauffmann - One of the best experts on this subject based on the ideXlab platform.
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Head Circumference at birth and maternal factors related to cord blood total IgE.
Clinical and Experimental Allergy, 1999Co-Authors: Marie-pierre Oryszczyn, Isabella Annesi-maesano, Dave Campagna, Josiane Sahuquillo, Guy Huel, Francine KauffmannAbstract:BACKGROUND: A recent study reported an association between a large Head Circumference at birth and adult total IgE. However, no study has yet looked at the relation between Head Circumference and cord blood IgE. OBJECTIVES: To assess the relationship between child's cord blood total IgE and Head Circumference at birth taking parental allergy and smoking habits as well as placental calcifications into account. METHODS: Two samples of unselected newborns and their mothers with uncomplicated pregnancies were studied: 235 in study A with data on parental allergy and 99 in study B with data on placental calcifications. RESULTS: In both studies, cord blood IgE was significantly related to large Head Circumference at birth (0.07 vs 0.15 IU/mL for newborns < 37 cm vs >/= 37 cm, respectively, P = 0. 03 for study A and 0.09 vs 0.28 IU/mL, P = 0.04 for study B). Cord blood IgE was unrelated to parental smoking habits. Maternal IgE significantly increased in mothers exposed to both active and passive smoking during pregnancy compared with other pregnant women. High cord blood IgE were associated with high maternal IgE (r = 0. 38; P < 0.001). Multiple linear regression showed that large Head Circumference, maternal IgE and clinical manifestations of maternal, but not paternal, allergy were independently related to cord blood IgE (study A). Large Head Circumference and placental calcifications were independently related to a higher cord blood IgE level (study B). CONCLUSIONS: Besides the role of genetic factors, results on the preferential role of maternal vs paternal allergy and associations to large Head Circumference and placental calcifications support the hypothesis of the role of environmental factors during pregnancy on the level of cord blood IgE.
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Head Circumference at birth and maternal factors related to cord blood total IgE.
Clinical and experimental allergy : journal of the British Society for Allergy and Clinical Immunology, 1999Co-Authors: Marie-pierre Oryszczyn, Isabella Annesi-maesano, Dave Campagna, Josiane Sahuquillo, Guy Huel, Francine KauffmannAbstract:Background A recent study reported an association between a large Head Circumference at birth and adult total IgE. However, no study has yet looked at the relation between Head Circumference and cord blood IgE. Objectives To assess the relationship between child's cord blood total IgE and Head Circumference at birth taking parental allergy and smoking habits as well as placental calcifications into account. Methods Two samples of unselected newborns and their mothers with uncomplicated pregnancies were studied: 235 in study A with data on parental allergy and 99 in study B with data on placental calcifications. Results In both studies, cord blood IgE was significantly related to large Head Circumference at birth (0.07 vs 0.15 IU/mL for newborns
Thomas F. Mcneil - One of the best experts on this subject based on the ideXlab platform.
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Neonatal Head Circumference and related indices of disturbed fetal development in schizophrenic patients
Schizophrenia research, 1998Co-Authors: Elizabeth Cantor-graae, Baher Ismail, Thomas F. McneilAbstract:Neonatal Head Circumference and dermatoglyphic patterns were examined in 60 schizophrenic patients with previous findings of elevated rates of minor physical anomalies. Neonatal Head Circumference was reduced in patients vs neonatal matched-controls. Patients did not differ from healthy adult controls on total finger ridge count, a-b palmar ridge count, or pattern type asymmetry. No significant relationships were found in patients between neonatal Head Circumference, dermatoglyphics and minor physical anomalies, with one exception: reduced a-b palmar ridge count was associated with abnormalities of the mouth. No relationship was found between patients' neonatal Head Circumference and their adult Head Circumference. Adult male schizophrenic patients had larger Head Circumference relative to body length than their male controls.
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Head Circumference in 'preschizophrenic' and control neonates.
The British journal of psychiatry : the journal of mental science, 1993Co-Authors: Thomas F. Mcneil, Elizabeth Cantor-graae, Lars Nordström, Thomas RosenlundAbstract:Head Circumference, body weight, body length, and shoulder Circumference at birth were studied in 70 RDC schizophrenic patients and 70 demographically matched controls from the same delivery series, using information recorded in the medical records at the time of birth. With preterm babies removed from both samples, only Head Circumference among preschizophrenic infants was significantly smaller than that of controls. Preschizophrenic infants also had a disproportionately smaller Head Circumference in relation to body length than did controls. Among the former, a small Head Circumference was systematically related to an absence of family history of psychosis, but was not related to season of birth or recorded pregnancy complications. The findings were strongest for females. The results suggest there is an unidentified non-genetic factor in schizophrenia that disturbs prenatal cerebral development.
