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Placental site in the second trimester of pregnancy and its association with subsequent obstetric outcome.
MedLine Citation:
PMID:  21413044     Owner:  NLM     Status:  Publisher    
Abstract/OtherAbstract:
OBJECTIVE: To determine if placental location in the second trimester of pregnancy is associated with adverse pregnancy outcomes. METHODS: We performed a retrospective study on 16 236 patients having ultrasound examination at 14 to 23 weeks of gestation between 2000 and 2007. The placental location was classified into one of four groups: 'central', 'fundal', 'lateral' and 'covering Os'. Obstetric outcomes of non-central placenta were compared to those with 'central' placenta. RESULTS: Women with a 'fundal' placenta were at increased risk of developing pre-eclampsia (PET) (odds ratios (OR) = 2.27; 95% confidence intervals (CI), 1.31-3.93), a preterm delivery before 34 weeks (OR = 2.23; 95% CI, 1.18-4.22), a non-vertex presentation (OR = 3.48; 95% CI, 2.49-4.86), undergoing a manual removal of placenta (MROP) following a vaginal delivery (OR = 7.1; 95% CI, 4.24-11.85) and small for gestational age (SGA) (OR = 1.35; 95% CI, 1.03-1.79). Women with a 'lateral' placenta were at increased risk of developing PET (OR = 2.04; 95% CI, 1.28-3.25), spontaneous preterm delivery before 34 weeks (OR = 2.04; 95% CI, 1.04-3.98), MROP (OR = 6.75; 95% CI, 4.4-10.33) and SGA (OR = 1.82; 95% CI, 1.48-2.23). Five women with a 'cover Os' placenta had an increased risk of postpartum haemorrhage (>1000 mL) (OR = 6.18; 95% CI 2.29-16.65) if they had a vaginal delivery. CONCLUSION: Non-central placental location in the second trimester is associated with an increase risk of adverse obstetric outcome. Copyright © 2011 John Wiley & Sons, Ltd.
Authors:
Tak Yuen Fung; Daljit Singh Sahota; Tze Kin Lau; Tak Yeung Leung; Lin Wai Chan; Tony Kwok Hung Chung
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Publication Detail:
Type:  JOURNAL ARTICLE     Date:  2011-3-17
Journal Detail:
Title:  Prenatal diagnosis     Volume:  -     ISSN:  1097-0223     ISO Abbreviation:  -     Publication Date:  2011 Mar 
Date Detail:
Created Date:  2011-3-17     Completed Date:  -     Revised Date:  -    
Medline Journal Info:
Nlm Unique ID:  8106540     Medline TA:  Prenat Diagn     Country:  -    
Other Details:
Languages:  ENG     Pagination:  -     Citation Subset:  -    
Copyright Information:
Copyright © 2011 John Wiley & Sons, Ltd.
Affiliation:
Department of Obstetrics and Gynaecology, The Chinese University of Hong Kong, The Prince of Wales Hospital, Shatin, Hong Kong SAR, China. drtyfung@yahoo.com.hk.
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