The effect of polyhydramnios on cervical length in twins: a controlled intervention study in complicated monochorionic pregnancies.
<h4>Objective</h4>To test the hypothesis that cervical shortening in polyhydramnios reflects the degree of excess amniotic fluid, and increases with normalisation of amniotic fluid volume.<h4>Study design</h4>Prospective cohort study of 40 women with monochorionic twins under...
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| Autores principales: | , , , |
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| Formato: | article |
| Lenguaje: | EN |
| Publicado: |
Public Library of Science (PLoS)
2008
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| Materias: | |
| Acceso en línea: | https://doaj.org/article/e496183162414e7cb47153d6df308299 |
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| Sumario: | <h4>Objective</h4>To test the hypothesis that cervical shortening in polyhydramnios reflects the degree of excess amniotic fluid, and increases with normalisation of amniotic fluid volume.<h4>Study design</h4>Prospective cohort study of 40 women with monochorionic twins undergoing interventional procedures between 16-26 weeks. Cervical length was assessed via transvaginal sonography pre-procedure, 1 and 24 hours post-procedure, and results compared between amnioreduction and control procedures. Amniotic fluid index (AFI) was measured pre- and post-procedure.<h4>Results</h4>Pre-procedural cervical length correlated with AFI (linear fit = 5.07 -0.04x, R(2) = 0.17, P = 0.03) in patients with polyhydramnios (n = 28). Drainage of 2000 ml fluid (range 700-3500 ml), reduced AFI from 42 cm to 21 cm (P<0.001). Their pre-procedural cervical length did not change at one (mean Delta:-0.1cm, 95%CI, -0.4 to 0.2) or 24 hours (0.2 cm, -0.1 to 0.6) after amnioreduction. There was no change in cervical length at control procedures.<h4>Conclusion</h4>Cervical shortening in twins with polyhydramnios does not appear to be an acute process; cervical length can be measured before or after therapeutic procedures. |
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