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• W1995748497 abstract "ObjectiveTo determine if women with placental invasion have a shorter cervix compared to women with non-adherent previa or low-lying placenta.Study DesignThis is a retrospective cohort study of gravidas with > 1 prior cesarean delivery who had a transvaginal ultrasound for previa or low-lying placenta between 24-34 weeks at our institution between 1998 and 2011. Cervical length was measured from archived images in accordance with the previously described national protocol by a single investigator blinded to pregnancy outcomes and sonography reports. Diagnosis of placental invasion was based on histologic confirmation. For study purposes, preterm birth was defined as < 36 weeks and cervical lengths < 3cm were considered short as morbidity has been demonstrated below this threshold in women with placenta previa in the third trimester. Standard statistical analyses were used.ResultsOf the 136 patients who met inclusion criteria, 164 sonograms were reviewed. Women who delivered < 36 weeks had shorter cervical length measurements between 24-34 weeks (3.23+0.92cm vs 3.73+1.03cm, p=0.03). The cohort was then divided into patients with (n=47, 35%) and without (n=89, 65%) placental invasion and stratified by gestational age. Women with invasion had shorter cervical length measurements during their 32-34 week ultrasound (3.26+0.97cm vs 3.95+1.02cm, p=0.004) and were more likely to have a short cervix <3cm compared to women with previa or low-lying placenta alone (P=0.003). However, this did not correlate with degree of invasion (p=0.821), vaginal bleeding requiring delivery (p=0.46), preterm labor (p=0.49) or preterm birth <36 weeks (p=0.23).Conclusion ObjectiveTo determine if women with placental invasion have a shorter cervix compared to women with non-adherent previa or low-lying placenta. To determine if women with placental invasion have a shorter cervix compared to women with non-adherent previa or low-lying placenta. Study DesignThis is a retrospective cohort study of gravidas with > 1 prior cesarean delivery who had a transvaginal ultrasound for previa or low-lying placenta between 24-34 weeks at our institution between 1998 and 2011. Cervical length was measured from archived images in accordance with the previously described national protocol by a single investigator blinded to pregnancy outcomes and sonography reports. Diagnosis of placental invasion was based on histologic confirmation. For study purposes, preterm birth was defined as < 36 weeks and cervical lengths < 3cm were considered short as morbidity has been demonstrated below this threshold in women with placenta previa in the third trimester. Standard statistical analyses were used. This is a retrospective cohort study of gravidas with > 1 prior cesarean delivery who had a transvaginal ultrasound for previa or low-lying placenta between 24-34 weeks at our institution between 1998 and 2011. Cervical length was measured from archived images in accordance with the previously described national protocol by a single investigator blinded to pregnancy outcomes and sonography reports. Diagnosis of placental invasion was based on histologic confirmation. For study purposes, preterm birth was defined as < 36 weeks and cervical lengths < 3cm were considered short as morbidity has been demonstrated below this threshold in women with placenta previa in the third trimester. Standard statistical analyses were used. ResultsOf the 136 patients who met inclusion criteria, 164 sonograms were reviewed. Women who delivered < 36 weeks had shorter cervical length measurements between 24-34 weeks (3.23+0.92cm vs 3.73+1.03cm, p=0.03). The cohort was then divided into patients with (n=47, 35%) and without (n=89, 65%) placental invasion and stratified by gestational age. Women with invasion had shorter cervical length measurements during their 32-34 week ultrasound (3.26+0.97cm vs 3.95+1.02cm, p=0.004) and were more likely to have a short cervix <3cm compared to women with previa or low-lying placenta alone (P=0.003). However, this did not correlate with degree of invasion (p=0.821), vaginal bleeding requiring delivery (p=0.46), preterm labor (p=0.49) or preterm birth <36 weeks (p=0.23). Of the 136 patients who met inclusion criteria, 164 sonograms were reviewed. Women who delivered < 36 weeks had shorter cervical length measurements between 24-34 weeks (3.23+0.92cm vs 3.73+1.03cm, p=0.03). The cohort was then divided into patients with (n=47, 35%) and without (n=89, 65%) placental invasion and stratified by gestational age. Women with invasion had shorter cervical length measurements during their 32-34 week ultrasound (3.26+0.97cm vs 3.95+1.02cm, p=0.004) and were more likely to have a short cervix <3cm compared to women with previa or low-lying placenta alone (P=0.003). However, this did not correlate with degree of invasion (p=0.821), vaginal bleeding requiring delivery (p=0.46), preterm labor (p=0.49) or preterm birth <36 weeks (p=0.23). Conclusion" @default.
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• W1995748497 date "2015-01-01" @default.
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• W1995748497 title "516: Cervical length in patients at risk for placental invasion" @default.
• W1995748497 doi "https://doi.org/10.1016/j.ajog.2014.10.562" @default.
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