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https://hdl.handle.net/2440/73544
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dc.contributor.author | Robinson, A. | - |
dc.contributor.author | Muller, P. | - |
dc.contributor.author | Allan, R. | - |
dc.contributor.author | Ross, R. | - |
dc.contributor.author | Baghurst, P. | - |
dc.contributor.author | Keirse, M. | - |
dc.date.issued | 2012 | - |
dc.identifier.citation | Australian and New Zealand Journal of Obstetrics and Gynaecology, 2012; 52(2):156-160 | - |
dc.identifier.issn | 0004-8666 | - |
dc.identifier.issn | 1479-828X | - |
dc.identifier.uri | http://hdl.handle.net/2440/73544 | - |
dc.description.abstract | BACKGROUND: A low-lying placenta detected at the mid-pregnancy ultrasound is commonly reported to warn against potential morbidity associated with placenta praevia. There is no information on what distance away from the internal cervical os is safe. AIMS: We examined whether a low-lying placenta not overlapping the cervical os in the second trimester increases the risk of obstetric complications and whether there is a cut-off point at which that increase occurs. METHODS: Adverse perinatal outcomes were examined prospectively in a cohort of women with a placenta 0–30 mm from the internal cervical os (low-lying) at the routine mid-trimester ultrasound and compared to those with a placenta further away. Two composite outcomes of major and minor adverse events were predefined as primary outcome measures, requiring a sample size of 480 women with a low-lying placenta. Chi-square and Fisher’s exact tests were used for statistical analysis. RESULTS: In 1662 pregnancies (low-lying: n = 484; normal: n = 1178), there was no increase in composite adverse outcomes with a low-lying placenta and no cut-off distance within 30 mm from the cervical os at which risks increased. Postpartum haemorrhage >1000 mL was more frequent with a low-lying placenta (7.6% vs 4.7%, P < 0.05). CONCLUSIONS: Women with a low-lying placenta, not overlapping the cervical os, in mid-pregnancy are at no higher risk of adverse outcomes than those with a normally located placenta, except postpartum haemorrhage. This suggests that the high-risk label can be removed from pregnancies with a low-lying placenta not overlapping the cervical os in midpregnancy, reducing anxiety and resource utilisation. | - |
dc.description.statementofresponsibility | Alice J. Robinson, Peter R. Muller, Richard Allan, Richard Ross, Peter A. Baghurst and Marc J.N.C. Keirse | - |
dc.language.iso | en | - |
dc.publisher | Blackwell Publishing Asia | - |
dc.rights | © 2012 The Authors ANZJOG © 2012 The Royal Australian and New Zealand College of Obstetricians and Gynaecologists | - |
dc.source.uri | http://dx.doi.org/10.1111/j.1479-828x.2012.01416.x | - |
dc.subject | mid-trimester | - |
dc.subject | placenta | - |
dc.subject | placenta praevia | - |
dc.subject | pregnancy outcome | - |
dc.subject | ultrasound | - |
dc.subject | vasa praevia | - |
dc.title | Precise mid-trimester placenta localisation: does it predict adverse outcomes? | - |
dc.type | Journal article | - |
dc.identifier.doi | 10.1111/j.1479-828X.2012.01416.x | - |
pubs.publication-status | Published | - |
Appears in Collections: | Aurora harvest 5 Public Health publications |
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