American journal of obstetrics and gynecology · 2011
The rate of cervical change and the phenotype of spontaneous preterm birth.
Сравнительное исследованиеСтатьяНазвание и аннотация: Перевод в очереди
Обработка статьи · этапы, ошибки и управление
Загрузка состояния…
Ошибки и ограничения
История · было → стало
Состояние обновляется каждые 5 секунд, пока блок открыт. Процент показывается только там, где известен объём работы. Пауза останавливает продолжение этапа; текущий запрос к источнику может завершиться.
Iams Jay D, Cebrik Deborah, Lynch Courtney, Behrendt Nicholas, Das Anita
Аннотация
OBJECTIVE: Preterm birth is classified by the presence of uterine contractions and/or amniorrhexis at clinical presentation. This classification does not include prior cervical change. We hypothesized that the rate of cervical shortening before preterm birth would not differ according to clinical presentation.
STUDY DESIGN: We analyzed data from a completed study of paired cervical ultrasound measurements to test our hypothesis. Cervical ultrasound measurements obtained 4 weeks apart in the second trimester were related to gestational age and clinical presentation at birth.
RESULTS: Of 2521 eligible women, 128 were delivered after preterm labor and 106 after preterm membrane rupture; 89 delivered preterm for a medical or obstetrical indication; 2198 delivered at term. The rate of change was similar in women who presented with preterm labor (-0.96 mm/week) and preterm ruptured membranes (-0.82 mm/week).
CONCLUSION: Cervical shortening occurs at the same rate before spontaneous preterm birth, regardless of presentation.
STUDY DESIGN: We analyzed data from a completed study of paired cervical ultrasound measurements to test our hypothesis. Cervical ultrasound measurements obtained 4 weeks apart in the second trimester were related to gestational age and clinical presentation at birth.
RESULTS: Of 2521 eligible women, 128 were delivered after preterm labor and 106 after preterm membrane rupture; 89 delivered preterm for a medical or obstetrical indication; 2198 delivered at term. The rate of change was similar in women who presented with preterm labor (-0.96 mm/week) and preterm ruptured membranes (-0.82 mm/week).
CONCLUSION: Cervical shortening occurs at the same rate before spontaneous preterm birth, regardless of presentation.
Предметные рубрики MeSH
AdultAnalysis of VarianceCervical RipeningCervix UteriCohort StudiesFemaleFetal DevelopmentPremature Rupture of Fetal MembranesHumansInfant, NewbornMonitoring, PhysiologicPhenotypePredictive Value of TestsPregnancyPregnancy OutcomePregnancy Trimester, SecondPremature BirthPrenatal CareProspective StudiesReference ValuesTerm BirthTime FactorsUltrasonography, PrenatalUterine ContractionYoung Adult