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ArticleTitle | Is Transvaginal Ultrasonography at Mid-trimester Useful for Predicting Early Spontaneous Preterm Birth? |
AuthorList | Takehiko Fukami1, Kaisuke Ishihara1, Takao Sekiya2 and Tsutomu Araki1 |
Affiliation | 1Department of Obstetrics and Gynecology, Nippon Medical School 2Department of Obstetrics and Gynecology, Fujita Health University Banbuntane Houtokukai Hospital, Aichi |
Language | EN |
Volume | 70 |
Issue | 2 |
Year | 2003 |
Page | 135-140 |
Received | October 18, 2002 |
Accepted | November 7, 2002 |
Keywords | cervical gland area, cervical length, preterm birth, transvaginal ultrasonography, cervical ripening |
Abstract | Numerous reports have examined the relationship between sonographically determined cervical length and spontaneous preterm birth. Moreover, large screening studies have consistently demonstrated that the shorter the cervical length, the higher the rate of spontaneous preterm delivery. However, the sensitivity and positive predictive value of the cervical length for detecting preterm birth were low. Subsequently, we developed a new sonographic parameter termed "cervical gland area (CGA)". The purpose of this study was to determine whether sonographic cervical findings (shortened cervical length or absence of CGA) at 16∼19 weeks' gestation could predict spontaneous preterm birth. The absence of CGA as compared to the shortened cervical length showed a higher sensitivity (75.0% vs. 50.0%) and a significantly elevated positive predictive value (54.5% vs. 8.3%) for preterm birth before 32 weeks' gestation. It was concluded that the absence of CGA was a novel and useful sonographic parameter for predicting early spontaneous preterm birth. |
Correspondence to | Takehiko Fukami, MD, Department of Obstetrics and Gynecology, Nippon Medical School Second Hospital, 1-396 Kosugi-cho, Kawasaki-shi, Kanagawa 211-8533, Japan fukami@nms.ac.jp |
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