Relation of cervical length at 22-24 weeks of gestation to demographic characteristics and obstetric history

被引:26
作者
Palma-Dias, RS
Fonseca, MM
Stein, NR
Schmidt, AP
Magalhaes, JA
机构
[1] Univ Fed Rio Grande Sul, Hosp Clin Porto Alegre, Serv Obstet & Ginecol, Porto Alegre, RS, Brazil
[2] Clin Ultra Som Alpha, Porto Alegre, RS, Brazil
关键词
cervical length; preterm delivery screening; transvaginal sonography; perinatal medicine;
D O I
10.1590/S0100-879X2004000500016
中图分类号
Q [生物科学];
学科分类号
07 ; 0710 ; 09 ;
摘要
Preterm delivery is the main cause of neonatal death and ultrasonographic cervical assessment has been shown to be more accurate than digital examination in recognizing a short cervix. This is a cross-sectional study, involving 1131 women at 22-24 weeks of pregnancy, designed to determine the distribution of cervical length and to examine which variables of demographic characteristics and obstetric history increase the risk of a short cervix (15 mm or less). The distribution of maternal demographic and obstetric history characteristics among patients with cervical length less than or equal to15 mm was analyzed and compared to the findings for the general population. Risk ratios (RR) between subgroups were generated from this comparison. Median cervical length was 37 mm and in 1.5% of cases it was 15 mm or less. The proportion of women with a short cervix (less than or equal to15 mm) was significantly higher among patients with a low body mass index (RR = 3.5) and in those with previous fetal losses between 16-23 weeks (RR = 33.1) or spontaneous preterm deliveries between 24-32 weeks (RR = 14.1). We suggest that transvaginal sonographic measurement of cervical length be performed as part of a routine midtrimester ultrasound evaluation. There are specific variables of demographic characteristics and obstetric history which increase the risk of detecting a short cervix at 22-24 weeks.
引用
收藏
页码:737 / 744
页数:8
相关论文
共 31 条
  • [1] PREDICTION OF RISK FOR PRETERM DELIVERY BY ULTRASONOGRAPHIC MEASUREMENT OF CERVICAL LENGTH
    ANDERSEN, HF
    NUGENT, CE
    WANTY, SD
    HAYASHI, RH
    [J]. AMERICAN JOURNAL OF OBSTETRICS AND GYNECOLOGY, 1990, 163 (03) : 859 - 867
  • [2] TRANSVAGINAL AND TRANSABDOMINAL ULTRASONOGRAPHY OF THE UTERINE CERVIX DURING PREGNANCY
    ANDERSEN, HF
    [J]. JOURNAL OF CLINICAL ULTRASOUND, 1991, 19 (02) : 77 - 83
  • [3] AYERS JWT, 1988, OBSTET GYNECOL, V71, P939
  • [4] Carvalho Mário Henrique Burlacchini de, 2002, Rev. Bras. Ginecol. Obstet., V24, P463
  • [5] A longitudinal study of the cervix in pregnancy using transvaginal ultrasound
    Cook, CM
    Ellwood, DA
    [J]. BRITISH JOURNAL OF OBSTETRICS AND GYNAECOLOGY, 1996, 103 (01): : 16 - 18
  • [6] Annual summary of vital statistics - 1996
    Guyer, B
    Martin, JA
    MacDorman, MF
    Anderson, RN
    Strobino, DM
    [J]. PEDIATRICS, 1997, 100 (06) : 905 - 918
  • [7] THE OUTCOME OF PREGNANCY AFTER CO2-LASER CONIZATION OF THE CERVIX
    HAGEN, B
    SKJELDESTAD, FE
    [J]. BRITISH JOURNAL OF OBSTETRICS AND GYNAECOLOGY, 1993, 100 (08): : 717 - 720
  • [8] Hasegawa I, 1996, J Matern Fetal Med, V5, P305
  • [9] Cervical length at 23 weeks of gestation: relation to demographic characteristics and previous obstetric history
    Heath, VCF
    Southall, TR
    Souka, AP
    Novakov, A
    Nicolaides, KH
    [J]. ULTRASOUND IN OBSTETRICS & GYNECOLOGY, 1998, 12 (05) : 304 - 311
  • [10] Cervical length at 23 weeks of gestation: prediction of spontaneous preterm delivery
    Heath, VCF
    Southall, TR
    Souka, AP
    Elisseou, A
    Nicolaides, KH
    [J]. ULTRASOUND IN OBSTETRICS & GYNECOLOGY, 1998, 12 (05) : 312 - 317