Ultrasound of the cervix during pregnancy
| Autor: | B. S. Mahony |
|---|---|
| Rok vydání: | 1997 |
| Předmět: |
medicine.medical_specialty
Preterm labor Urology Placenta Previa Cervix Uteri External os Ultrasonography Prenatal Obstetric Labor Premature Pregnancy Risk Factors medicine Humans Radiology Nuclear Medicine and imaging Cervix Observer Variation Radiological and Ultrasound Technology Obstetrics business.industry Ultrasound Gastroenterology General Medicine medicine.disease female genital diseases and pregnancy complications Bladder filling Placenta previa Pregnancy Complications medicine.anatomical_structure Vagina Female Uterine Cervical Incompetence Translabial ultrasound business |
| Zdroj: | Abdominal Imaging. 22:569-578 |
| ISSN: | 1432-0509 0942-8925 |
| DOI: | 10.1007/s002619900266 |
| Popis: | During pregnancy, the cervix is a critically important structure that separates the fetus from the outside world. Digital examination of the cervix may be unreliable because it is subjective, with a wide intraobserver and interobserver variation, and incomplete because it palpates only the vaginal portion of the cervix. Only about half of the cervix is accessible to the palpating finger, and the internal os can only be felt if the cervix is dilated down to the external os. Ultrasound (US) of the cervix is more accurate than digital examination of the cervix in patients with preterm labor [1 ‐ 3]. Although the official guidelines for the American Institute of Ultrasound in Medicine and for the American College of Obstetricians and Gynecologists recommend evaluation of the cervix as a component of a basic US obstetric examination, the cervix has been a notoriously difficult structure to visualize consistently with ultrasound. Limitations caused by patient size, overlying structures, and variable degrees of bladder filling prevent adequate or reproducible visualization of the cervix via the suprapubic transabdominal technique in a significant percentage of women. However, transvaginal and translabial ultrasound provide excellent visualization of the cervix, such that the sonologist now plays a critical role in the evaluation of the cervix. The sonologists’ interpretations significantly impact the subsequent management of a pregnancy in which a disorder of the cervix exists. |
| Databáze: | OpenAIRE |
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