The Accuracy of Amniotic Fluid Ferning in the Second Trimester in the Diagnosis of Preterm Prelabor Rupture of Membranes
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Although much investigation has been done on the use of ferning in the second and third trimesters, particularly with the development of rapid protein clinical assays, there appears to be lower ferning rates in clinical practice with traditional techniques compared to previous published research on the subject. Much of the older study designs are lacking in detail and lack a large enough sample sizes at each gestational age to appropriately interpret the significance of ferning results by gestational age. Additionally, a large premise for the current tests used to diagnose rupture of membranes is based on these older studies. Given this, we propose collecting amniotic fluid vaginally to evaluate for the presence of ferning in the second trimester to determine if there is a difference in ferning based on gestational age as well as the time interval after rupture of membranes in which ferning can observed on microscope examination.
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Inclusion criteria
- 18 years or older
- English speaking
- singleton or multi fetal gestation
- between 15 and 24 weeks gestation
- undergoing elective pregnancy termination
Exclusion criteria
- known rupture of membranes or anhydramnios
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100 participants in 2 patient groups
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OBGYN Research Director
Data sourced from clinicaltrials.gov
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