Document Detail

Longitudinal ultrasound assessment of fetal presentation: a review of 1010 consecutive cases.
MedLine Citation:
PMID:  16866797     Owner:  NLM     Status:  MEDLINE    
BACKGROUND: Abnormal presentation (detected in the early third trimester) causes concern for pregnant women and their carers. Definitive ultrasound-based data on the risk of persistence of abnormal presentation is lacking to allow appropriate counselling. Comparison of pregnancy outcome was made on the basis of maternal age at delivery. METHODS: Notes of 1010 women (426 primigravidae, 584 multigravidae), with singleton pregnancies, confined between 1997 and 2005 were reviewed to extract: (i) the gestation based on 18-20-week ultrasound in conjunction with the patient's recorded last menstrual period, and (ii) the presentation of each antenatal visit from 28+ weeks until delivery. Previous obstetric history, maternal age, mode of delivery, birthweight and outcomes were also documented. RESULTS: At 28-30 weeks, 216 babies presented abnormally. By 38+ weeks, 54 persisted as either a breech or a transverse lie. Thus, an abnormal presentation in the early trimester carries a 22.2% chance of persisting at term. Continuance of abnormal presentation at each subsequent week of the third trimester increased the risk of a Caesarean delivery at term. Conversely, in only six cases, a cephalic presentation at 28-30 weeks converted to a breech or other presentation during the third trimester-- a risk of 0.75%. CONCLUSION: These statistics provide a useful tool in advising women of the chances of abnormal presentation at term based on the presentation at various stages of the third trimester, and prepare them for the potential requirement of a Caesarean section.
Alice J Sophia Fox; Michael G Chapman
Related Documents :
11476917 - Ultrasound and the developing central nervous system.
3882127 - Comparison of ultrasound and caliper measurements of normal and inflamed skin thickness.
11254157 - Three-dimensional ultrasonography in early pregnancy.
15846757 - Effects of ultrasound on maternal-fetal bonding: a comparison of two- and three-dimensi...
17671667 - A small change in the design of a slit bioaerosol impactor significantly improves its c...
24485857 - A retrospective multi-institutional study of treatment for mild gestational diabetes in...
Publication Detail:
Type:  Journal Article    
Journal Detail:
Title:  The Australian & New Zealand journal of obstetrics & gynaecology     Volume:  46     ISSN:  0004-8666     ISO Abbreviation:  Aust N Z J Obstet Gynaecol     Publication Date:  2006 Aug 
Date Detail:
Created Date:  2006-07-26     Completed Date:  2006-11-28     Revised Date:  2009-11-11    
Medline Journal Info:
Nlm Unique ID:  0001027     Medline TA:  Aust N Z J Obstet Gynaecol     Country:  Australia    
Other Details:
Languages:  eng     Pagination:  341-4     Citation Subset:  IM    
University of New South Wales, New South Wales, Australia.
Export Citation:
APA/MLA Format     Download EndNote     Download BibTex
MeSH Terms
Breech Presentation / epidemiology*,  ultrasonography*
Cesarean Section
Gestational Age
Longitudinal Studies
Maternal Age
Medical Records
New South Wales / epidemiology
Pregnancy Outcome
Pregnancy Trimester, Third
Retrospective Studies
Ultrasonography, Prenatal*

From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine

Previous Document:  Perinatal outcome of pregnancies after inadvertent exposure to gonadotrophin-releasing hormone analo...
Next Document:  Ultrasound of the post-partum uterus.