Blinded comparison of cervical portio length measurements by digital examination vs Cervilenz

Burwick, Richard M.; Lee, Gene; Benedict, Jennifer L.; Ross, Michael G.; Kjos, Siri L.

doi:10.1016/j.ajog.2008.11.026

Cited by 10 publications

(3 citation statements)

References 6 publications

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“…At this stage, pessaries should only be administered within randomized or carefully planned and monitored population-based studies. If TVS is not available, other methods to measure cervical length could be considered 69 , 70 .…”

Section: Implications For Further Researchmentioning

confidence: 99%

Cervical pessaries for prevention of spontaneous preterm birth: past, present and future

Arabin

Alfirević

2013

Ultrasound in Obstet & Gyne

135

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This Review describes the rationale for the use of cervical pessaries to prevent spontaneous preterm birth and their gradual introduction into clinical practice, discusses technical aspects of the more commonly used designs and provides guidance for their use and future evaluation. Possible advantages of cervical pessaries include the easy, ‘one-off’ application, good side-effect profile, good patient tolerance and relatively low cost compared with current alternatives. Use of transvaginal sonography to assess cervical length in the second trimester allows much better selection of patients who may benefit from the use of a cervical pessary, but future clinical trials are needed to establish clearly the role of pessaries as a preterm birth prevention strategy worldwide.

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Section: Implications For Further Researchmentioning

confidence: 99%

Cervical pessaries for prevention of spontaneous preterm birth: past, present and future

Arabin

Alfirević

2013

Ultrasound in Obstet & Gyne

135

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“…This device, like digital examination, measures the vaginal or external (portio) cervical length and cannot determine internal cervical characteristics (Figure 1). 22 Measurements of cervical length using this device typically are shorter than ultrasound measurements 24–26 . Measurements of less than 30 mm when using this device were predictive of short cervix by transvaginal ultrasound 25…”

Section: Assessment Of Cervical Lengthmentioning

confidence: 97%

Assessment of Cervical Length and the Relationship Between Short Cervix and Preterm Birth

Slager¹,

Lynne²

2012

J Midwife Womens Health

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Premature effacement of the cervix, or short cervix, in the midtrimester of pregnancy currently represents the strongest predictor of spontaneous preterm birth. Numerous studies have examined the relationship between short cervix and preterm birth, and although differences in sensitivity and predictive value exist, the overwhelming consensus indicates that the risk of preterm birth increases with decreasing cervical length. Cutoff values for cervical length range from less than 25 mm to less than 15 mm depending on patient characteristics and gestational age. Importantly, short cervix is more sensitive for predicting earlier forms of prematurity (at <32 weeks) than later forms of prematurity (>32 weeks). Cervical length measured at 18 to 24 weeks' gestation appears to be the most valuable measurement. Cervical length assessments can be performed by digital examination, a cervical measurement device, transabdominal ultrasound, or transvaginal ultrasound. Transvaginal ultrasound is the most reliable method to evaluate cervical length, but it is not available in all locations. Current clinical practice standards do not recommend universal screening for cervical length; however, results of randomized controlled clinical trials provide evidence to support expanded screening programs by individual practitioners.

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“…Anualmente alrededor del mundo nacen 13 millones de niños prematuros, la mayoría en países en desarrollo, donde el parto pretérmino (PP) constituye el componente principal de la morbi-mortalidad perinatal (1), aportando más del 70% de la morbi-mortalidad neonatal mundial, con una incidencia entre 7 -12% en los Estados Unidos de Norteamérica (2), donde al igual que en Europa, a pesar del incremento del uso de tocolíticos, su incidencia permanece sin cambios alrededor del 8% (3).…”

Section: Introductionunclassified

Alfa-fetoproteína sérica en la predicción de parto pretérmino

Machado

Leal

García³

et al. 2013

Rev. chil. obstet. ginecol.

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Relacionar las concentraciones de la alfafetoproteína (AFP) sérica con la ocurrencia de parto pretérmino (PP) en embarazadas con y sin factores de riesgo (FR) atendidas en la Maternidad "Dr. Armando Castillo Plaza" en Maracaibo, Estado Zulia, Venezuela. Métodos: Investigación predictiva y comparativa aplicada, que incluyo 60 embarazadas con y sin FR para PP (n= 30 para cada grupo), a las que se les determinó la AFP sérica entre las 24-28 semanas de gestación, siguiéndose hasta la culminación del embarazo. Resultados: Las concentraciones de AFP en gestantes con FR fueron significativamente mayores (341,35 ± 183,51 vs. 238,63 ± 110,46; p<0,05); asimismo, el diagnóstico de PP se efectuó en 43,33% de las gestantes con FR y en 13,33% sin FR (p<0,05). Esta prueba presentó en gestantes con FR tasas más altas de sensibilidad (77%), especificidad (76%), valor predictivo positivo (71%) o negativo (81%), predicción total (77%); razón de verosimilitud positiva (3,27) y probabilidad post-test positiva (71%); mientras que la razón de verosimilitud negativa (0,30) y la probabilidad post-test negativa (19%) fueron bajas, en tanto que el riesgo de PP fue significativo (OR [IC95%]= 10,833 [1,961-59,835]; p<0,05). Conclusión: Existe una relación entre la elevación de las concentraciones de AFP y la presencia de PP, mostrando esta prueba tener una alta capacidad diagnóstica y poder predictivo para la ocurrencia de esta patología en embarazadas con FR.

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Blinded comparison of cervical portio length measurements by digital examination vs Cervilenz

Cited by 10 publications

References 6 publications

Cervical pessaries for prevention of spontaneous preterm birth: past, present and future

Cervical pessaries for prevention of spontaneous preterm birth: past, present and future

Assessment of Cervical Length and the Relationship Between Short Cervix and Preterm Birth

Alfa-fetoproteína sérica en la predicción de parto pretérmino

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