Transvaginal sonography of cervical width and length during pregnancy

Carl Vernon Smith, J. C. Anderson, A. Matamoros, W. F. Rayburn

Research output: Contribution to journalArticle

33 Citations (Scopus)

Abstract

Transvaginal ultrasonography has been proposed as a reliable method of assessing dimensions of the cervix. The purpose of the current investigation was to establish normative data for cervical width and length during pregnancy. This information may be helpful in predicting patients at risk for preterm birth. A transvaginal 5 or 7.5 MHz transducer was used on 132 consecutive low-risk pregnant women undergoing evaluation for gestational dating purposes. Even in cases of patient obesity or an empty bladder, high resolution was possible and permitted cervical measurement in all but one case. The external cervical width at the vaginal fornices was found to increase with advancing gestation (R = 0.512, P < 0.005). The cervical length from internal os to external os was found not to change with advancing gestation (R = 0.11, P = 0.30). Using these normative data, investigation is recommended to determine whether measuring cervical width and length is useful in predicting preterm labor and delivery.

Original languageEnglish (US)
Pages (from-to)465-467
Number of pages3
JournalJournal of Ultrasound in Medicine
Volume11
Issue number9
DOIs
StatePublished - Jan 1 1992

Fingerprint

pregnancy
Ultrasonography
Pregnancy
obesity
labor
Premature Obstetric Labor
bladder
Premature Birth
dating
Transducers
Cervix Uteri
Pregnant Women
delivery
transducers
Urinary Bladder
Obesity
evaluation
high resolution

ASJC Scopus subject areas

  • Radiological and Ultrasound Technology
  • Radiology Nuclear Medicine and imaging

Cite this

Transvaginal sonography of cervical width and length during pregnancy. / Smith, Carl Vernon; Anderson, J. C.; Matamoros, A.; Rayburn, W. F.

In: Journal of Ultrasound in Medicine, Vol. 11, No. 9, 01.01.1992, p. 465-467.

Research output: Contribution to journalArticle

Smith, Carl Vernon ; Anderson, J. C. ; Matamoros, A. ; Rayburn, W. F. / Transvaginal sonography of cervical width and length during pregnancy. In: Journal of Ultrasound in Medicine. 1992 ; Vol. 11, No. 9. pp. 465-467.
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