Predictors of positivity for fetal fibronectin in patients with symptoms of preterm labor

Article Abstract:

Use of fetal fibronectin measurements to predict women at risk for preterm labor may be confounded by other factors. Researchers analyzed levels of fetal fibronectin obtained from the cervices of women at risk for preterm labor and evaluated conditions that were related to positive fetal fibronectin. Women were more likely to have a positive fetal fibronectin measurement if their cervices were dilated, they had sexual intercourse within 24 hours of fibronectin collection, they received a cervical examination within 24 hours of fibronectin collection, they were experiencing vaginal bleeding, or they were having uterine contractions.

Incompetent cervix

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Fetal fibronectin as a predictor of preterm birth in patients with symptoms: a multicenter trial

Article Abstract:

A fibronectin test result appears to be a reliable factor in planning for a premature birth. Fibronectin tests were performed vaginally on 763 women in early labor, dilated more than three centimeters, whose membranes had not broken and had not been given medication to stop the contractions. Women with positive fibronectin test results were 25.9 times more likely to deliver within a week and 20.4 times more likely to deliver within two weeks than those with negative results. Nearly all of the women with a negative test result did not deliver within two weeks of the test.

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Identifying twin gestations at low risk for preterm birth with a transvaginal ultrasonographic cervical measurement at 24 to 26 weeks' gestation

Article Abstract:

Cervical lengths of greater than 35 millimeters (mm) in women 24 to 26 weeks' pregnant with twins may predict a low risk of preterm delivery before 34 weeks' gestation. In 85 twin pregnancies, cervical lengths at 24 to 26 weeks were determined using the transvaginal ultrasonography imaging method. Average cervical length in women delivering at term with no intervention was significantly higher than in those delivering before 34 weeks, or those requiring intervention. Of 34 women having a cervical length greater than 35 mm, only one delivered before 34 weeks' gestation.

Health aspects, Usage, Ultrasound imaging, Pregnancy, Multiple, Multiple pregnancy

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