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IBECS, IME

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  • SCImago Journal Rank (SJR):0,11
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doi: 10.1016/S0304-5013(04)76002-1
Curvas de normalidad de la longitud cervical ecográfica según edad gestacional en población española
Gestational age-dependent normal values of ultrasonographic measurement of cervical length in the Spanish population
F. Crispi, E. Llurba, C. Pedrero, E. Carreras, T. Higueras, E. Hermosilla, L. Cabero, E. Gratacós,
Unidad de Medicina Fetal. Hospital Vall d’Hebron. Barcelona. España
Recibido 05 noviembre 2003, Aceptado 06 mayo 2004
Resumen
Objetivo

Obtener curvas de normalidad de la longitud cervical uterina en población española, en gestación única y gemelar.

Sujetos y métodos

Gestantes derivadas a nuestro centro para control ecográfico rutinario entre las 12 y 36 semanas. Se realizaron 285 ecografías transvaginales en gestaciones únicas y 281 en múltiples. Se calculó la media y los percentiles 5 y 95 de la longitud cervical para cada semana de gestación, y se obtuvieron las curvas de normalidad.

Resultados

La longitud cervical media disminuyó de forma progresiva durante el embarazo. Tanto en gestaciones únicas como múltiples, el percentil 5 al inicio del segundo trimestre se situó en 25 mm. Sin embargo, en el tercer trimestre se observó una disminución muy marcada especialmente en gestaciones múltiples, que llegó a ser de 15 mm en gestaciones únicas e inferior a 10 mm en múltiples.

Conclusiones

Nuestros resultados aportan puntos de corte para la evaluación de la utilización clínica o en investigación de la longitud cervical ecográfica. Las diferencias observadas en gestación única y múltiple justifican la utilización de curvas diferenciadas.

Abstract
Objective

To establish gestational age-dependent normal values of ultrasonographic assessment of cervical length in Spanish singleton and twin pregnancies.

Subjects and methods

Pregnant women undergoing routine ultrasound scans between weeks 12 and 36 at our unit were studied. Transvaginal ultrasound examinations were performed in 285 singleton pregnancies and in 281 twin pregnancies. The mean cervical length and the 5th and 95th percentiles were calculated for each gestational week and curves of normality were obtained.

Results

Cervical length progressively decreased with gestational age. At the beginning of the second trimester, the 5th percentile was 25 mm in both singleton and twin pregnancies. In the third trimester, there was a sharp decrease, especially in twin pregnancies, reaching 15 mm in singleton pregnancies and less than 10 mm in twin pregnancies.

Conclusions

Our results provide cut-off values for the clinical and investigational use of ultrasound measurement of cervical length. The differences between singleton and twin pregnancies warrant the use of adapted reference curves.

Palabras Clave
Longitud cervical ecográfica, Ecografías transvaginales, Curvas de normalidad, Gestación gemelar
Key Words
Ultrasound cervical length, Transvaginal ultrasound, Normal values, Twin pregnancies
El Texto completo solo esta disponible en PDF
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Este proyecto ha sido realizado con el soporte de la beca FIS 02/750.

Correspondencia: Unidad de Medicina Fetal. Hospital Materno-Infantil Vall d’Hebron (6.a planta). P.° Vall d’Hebron, 119-229. 08035 Barcelona. España
Copyright © 2004. Sociedad Española de Ginecología y Obstetricia