TY - JOUR
T1 - New anatomical landmarks to study the relationship between fetal lung area and thoracic circumference by three-dimensional ultrasonography
AU - Werneck Britto, Ingrid Schwach
AU - Tedesco, Giselle Darahem
AU - Herbst, Sandra Rejane Silva
AU - Silva Bussamra, Luiz Cláudio
AU - De Andrade, Fernando Moreira
AU - Júnior, Edward Araujo
AU - Nardozza, Luciano Marcondes Mac Hado
AU - Ruano, Rodrigo
AU - Moron, Antonio Fernandes
AU - Aoki, Tsutomu
N1 - Copyright:
Copyright 2014 Elsevier B.V., All rights reserved.
PY - 2012/10
Y1 - 2012/10
N2 - Objective: To evaluate the relation between total lung area (TLA) and thoracic circumference (TC) ratio by three-dimensional (3D) ultrasonography applying new anatomical landmarks as the fetal aorta and inferior angle of the scapula. Methods: A longitudinal prospective study was conducted with 56 uncomplicated pregnancies between 24 and 32 weeks of gestation. Polynomial regressions were used to evaluate the correlation between TC and gestational age (GA) as well as TC and estimated fetal weight (EFW). A simple linear regression was used to evaluate the correlation between TLA and Total thoracic area (TTA) and GA. The intraclass correlation coefficient (ICC) was used to assess the intra and interobserver variability. Results: 127 examinations were performed. TC values ranged from 150 to 174mm (mean 166mm) at 24 weeks and 215248mm (mean 231mm) at 32 weeks. The TLA/TC ratio ranged from a mean of 0.64 at 24 weeks (range 0.560.70) to 0.90 at 32 weeks gestation (range 0.791.01). The intraobserver variability using the ICC was of 0.919 for TC; 0.916 for TTA; 0.860 for right lung area (RLA) and 0.910 for left lung area (LLA). Interobserver reproducibility was with an ICC of 0.970 for TC; 0.984 for RLA and 0.910 for LLA. Conclusions: Measurement of fetal TC and the relationship between TLA and TC by 3D-ultrasonography applying new anatomical landmarks shows good reproducibility and allows a new assessment of thoracic and lung growth.
AB - Objective: To evaluate the relation between total lung area (TLA) and thoracic circumference (TC) ratio by three-dimensional (3D) ultrasonography applying new anatomical landmarks as the fetal aorta and inferior angle of the scapula. Methods: A longitudinal prospective study was conducted with 56 uncomplicated pregnancies between 24 and 32 weeks of gestation. Polynomial regressions were used to evaluate the correlation between TC and gestational age (GA) as well as TC and estimated fetal weight (EFW). A simple linear regression was used to evaluate the correlation between TLA and Total thoracic area (TTA) and GA. The intraclass correlation coefficient (ICC) was used to assess the intra and interobserver variability. Results: 127 examinations were performed. TC values ranged from 150 to 174mm (mean 166mm) at 24 weeks and 215248mm (mean 231mm) at 32 weeks. The TLA/TC ratio ranged from a mean of 0.64 at 24 weeks (range 0.560.70) to 0.90 at 32 weeks gestation (range 0.791.01). The intraobserver variability using the ICC was of 0.919 for TC; 0.916 for TTA; 0.860 for right lung area (RLA) and 0.910 for left lung area (LLA). Interobserver reproducibility was with an ICC of 0.970 for TC; 0.984 for RLA and 0.910 for LLA. Conclusions: Measurement of fetal TC and the relationship between TLA and TC by 3D-ultrasonography applying new anatomical landmarks shows good reproducibility and allows a new assessment of thoracic and lung growth.
KW - Fetal lung area
KW - Fetal thoracic circumference
KW - Multiplanar mode
KW - Reference intervals
KW - Three-dimensional ultrasonography
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U2 - 10.3109/14767058.2012.667176
DO - 10.3109/14767058.2012.667176
M3 - Article
C2 - 22372878
AN - SCOPUS:84866405331
SN - 1476-7058
VL - 25
SP - 1927
EP - 1932
JO - Journal of Maternal-Fetal and Neonatal Medicine
JF - Journal of Maternal-Fetal and Neonatal Medicine
IS - 10
ER -