Journal of ultrasound in medicine : official journal of the American Institute of Ultrasound in Medicine · 2025
Fetal Proximal and Distal Transverse Aortic Arch and Aortic Isthmus Measurements Between 19 and 34 Weeks of Gestation.
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Erenel Hakan, Kurt Bilirer Kubra, Ersan Firat, Alpay Verda, Ozyilmaz Isa
Аннотация
OBJECTIVES: To assess fetal proximal and distal transverse aortic arch and aortic isthmus (AI) diameters between 19 and 34 weeks of gestation.
METHODS: A prospective cross-sectional descriptive study was performed in 466 low-risk pregnancies between 19 and 34 weeks of gestation. Proximal transverse aortic arch (PTAA), distal transverse aortic arch (DTAA), and the AI diameters (sagittal and three-vessel trachea view) were measured.
RESULTS: The mean ± SD, and 5th, 50th, 95th centile charts according to gestational age for PTAA, DTAA, and AI diameter were constructed. Pearson's correlation coefficients for PTAA, DTAA, and AI diameter (sagittal and three-vessel trachea view) by gestational week were 0.884, 0.877, 0.890, and 0.898, respectively (P < .0001). The mean AI diameter, in both sagittal and three-vessel trachea planes, was significantly lower than that of the proximal and distal transverse aortic arch (P = .001).
CONCLUSIONS: We demonstrated the growth curve and nomogram of the PTAA. With the aid of nomograms, the prenatal identification of proximal transverse aortic arch hypoplasia may facilitate a better understanding of the severity of transverse aortic arch hypoplasia and assist in planning the appropriate postnatal surgical intervention.
METHODS: A prospective cross-sectional descriptive study was performed in 466 low-risk pregnancies between 19 and 34 weeks of gestation. Proximal transverse aortic arch (PTAA), distal transverse aortic arch (DTAA), and the AI diameters (sagittal and three-vessel trachea view) were measured.
RESULTS: The mean ± SD, and 5th, 50th, 95th centile charts according to gestational age for PTAA, DTAA, and AI diameter were constructed. Pearson's correlation coefficients for PTAA, DTAA, and AI diameter (sagittal and three-vessel trachea view) by gestational week were 0.884, 0.877, 0.890, and 0.898, respectively (P < .0001). The mean AI diameter, in both sagittal and three-vessel trachea planes, was significantly lower than that of the proximal and distal transverse aortic arch (P = .001).
CONCLUSIONS: We demonstrated the growth curve and nomogram of the PTAA. With the aid of nomograms, the prenatal identification of proximal transverse aortic arch hypoplasia may facilitate a better understanding of the severity of transverse aortic arch hypoplasia and assist in planning the appropriate postnatal surgical intervention.