Cervical length and funneling at 23 weeks of gestation in the prediction of spontaneous early preterm delivery.
نویسندگان
چکیده
OBJECTIVES To establish the relationship of cervical length at 23 weeks of gestation to the risk of spontaneous delivery before 33 weeks and to determine the possible additional risk if funneling is present. METHODS During a 36-month period, 6819 women with singleton pregnancies underwent transvaginal sonographic cervical assessment at 22-24 weeks as a screening test for preterm delivery. The distribution of cervical length and the prevalence of funneling, defined as dilatation of the internal os of > or = 5 mm in width, were established. Women who underwent cervical cerclage, iatrogenic preterm delivery or were lost to follow-up were excluded from further analysis. In the remaining 6334 pregnancies, logistic regression was used to examine the contribution of cervical length and funneling to the risk of spontaneous preterm delivery before 33 weeks. RESULTS The median cervical length was 36 mm and in 1.6% of cases the length was < or = 15 mm. There was a significant inverse association between cervical length and percentage rate of spontaneous delivery before 33 weeks. Funneling of the internal os was present in about 4% of pregnancies and the prevalence decreased with increasing cervical length from 98% when the length was < or = 15 mm to about 25% for lengths of 16-30 mm and less than 1% at lengths of > 30 mm. The rate of preterm delivery was 6.9% in those with funneling compared to 0.7% in those without funneling (chi2 = 86.7; P < 0.0001). However, logistic regression analysis demonstrated that funneling did not provide a significant additional contribution to cervical length in the prediction of spontaneous delivery before 33 weeks (odds ratio for short cervix = 24.9, Z = 4.43, P < 0.0001; odds ratio for funneling = 1.8, Z = 0.84, P = 0.40). CONCLUSION In the prediction of preterm delivery, funneling does not provide any significant contribution in addition to cervical length.
منابع مشابه
مقایسه پارامترهای سونوگرافی سرویکس در پیشگویی زایمان زودرس در زنان باردار پرخطر
Background: Preterm delivery is a relevant public health problem. The aim of this study was to evaluate the association between spontaneous preterm delivery (SPTD) before 35 and 37 weeks of gestational age and the measurement of the cervix length, cervical funneling and Cervical Gland Area (CGA), in high risk pregnant population.Methods: A prospective cohort of 200 women carrying high ris...
متن کاملسونوگرافی واژینال برای پیشگویی زایمان زودرس در زنان باردار پرخطر: مطالعه آیندهنگر
Normal 0 false false false EN-US X-NONE AR-SA MicrosoftInternetExplorer4 /* Style Definitions */ table.MsoNormalTable {mso-style-name:"Table Normal" mso-tsty...
متن کاملCervical length at 23 weeks of gestation: prediction of spontaneous preterm delivery.
OBJECTIVE To examine the potential value of routine measurement of cervical length in singleton pregnancies at 23 weeks of gestation in the prediction of the risk for early spontaneous preterm delivery. METHODS Cervical length was measured by sonography at 23 weeks in 2567 singleton pregnancies in women attending for routine antenatal care. In 43 women, the length was < or = 15 mm and 21 of t...
متن کاملارتباط طول دهانه رحم در خانمهای باردار با سن حاملگی24-16 هفته با زایمان زودرس به وسیله سونوگرافی از راه واژن
Background & Aims : At least two third of neonatal morbidity and mortality are due to preterm labor. Transvaginalultrasonography has an important role in diagnosis of cervical incompetency and prediction of preterm labor. T he aim of this study was to determine the value of ultrasonographically measured cervical length between 16-24 weeks gestation in the prediction of spontaneous preterm d...
متن کاملTransvaginal ultrasound in the prediction of preterm delivery: singleton and twin gestations.
OBJECTIVE To compare, in singleton and twin pregnancies, the effectiveness of transvaginal ultrasound versus digital examination in predicting preterm delivery in women with suspected preterm labor. METHODS Transvaginal ultrasound and pelvic examinations were performed on patients admitted with suspected preterm labor between 23 and 33 weeks' gestation. Ultrasound assessment of cervical lengt...
متن کاملذخیره در منابع من
با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید
برای دانلود متن کامل این مقاله و بیش از 32 میلیون مقاله دیگر ابتدا ثبت نام کنید
ثبت ناماگر عضو سایت هستید لطفا وارد حساب کاربری خود شوید
ورودعنوان ژورنال:
- Ultrasound in obstetrics & gynecology : the official journal of the International Society of Ultrasound in Obstetrics and Gynecology
دوره 18 3 شماره
صفحات -
تاریخ انتشار 2001