Evaluation of the development of the fetal anal sphincter with tomography ultrasonography imaging.
Ultrasound Med Biol
; 41(1): 40-6, 2015 Jan.
Article
en En
| MEDLINE
| ID: mdl-25438852
ABSTRACT
The aim of the study described here was to examine the potential of tomography ultrasonography imaging (TUI) in evaluation of the fetal anal sphincter. In this prospective cross-sectional study of the fetal anal sphincter with TUI, 326 singleton pregnancies (mean age = 28 y, range 22-38 y) were scanned at 19-40 wk of gestation. The fetal anal region and ischium were revealed in 320 of 326 patients (98.2%). The normal fetal anal sphincter diameter and ischial space reached maximums of 15 and 39 mm, respectively. The normal fetal anal sphincter diameter and the ischial space were plotted as a function of gestational age (GA) on a linear curve, and the regression equations for normal fetal anal sphincter diameter and ischial space as a function of GA in weeks were obtained. A scatterplot was also created that revealed a significant positive relationship between normal fetal anal sphincter diameter and ischial space. On the basis of these criteria, imperforate anus was diagnosed in one fetus. Ultrasonographic assessment of the fetal anal sphincter and the ischium with TUI is feasible. The reference values reported in this article may be useful in prenatal diagnosis of fetal anal sphincter abnormalities.
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Base de datos:
MEDLINE
Asunto principal:
Canal Anal
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Interpretación de Imagen Asistida por Computador
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Tomografía
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Ultrasonografía Prenatal
Tipo de estudio:
Diagnostic_studies
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Observational_studies
Idioma:
En
Revista:
Ultrasound Med Biol
Año:
2015
Tipo del documento:
Article