Diagnostic ultrasound ( PDFDrive )

1508 PART IV Obstetric and Fetal Sonography
Threatened preterm labor
Cervix length 20-29 mm
Cervix length < 20 mm
FFN negative
FFN positive
No contractions
Contractions
Observe 24 hours
Stable
Unstable
Discharge
Treat at MD discretion
FIG. 44.18 Management Protocol: High-Risk Obstetric Population. Algorithm to guide management in threatened preterm labor. FFN, Fetal
ibronectin.
Acknowledgment
he authors would like to thank Drs. Whittle, Fong, and Windrim,
whose chapter in the previous edition of this book formed the
backbone of the current chapter.
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