Document Detail


Longitudinal ultrasound assessment of fetal presentation: a review of 1010 consecutive cases.
MedLine Citation:
PMID:  16866797     Owner:  NLM     Status:  MEDLINE    
Abstract/OtherAbstract:
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.
Authors:
Alice J Sophia Fox; Michael G Chapman
Related Documents :
8717557 - The prevalence and timing of obstetric ultrasound in victoria 1991-1992: a population-b...
9415697 - First-trimester diagnosis of blomstrand lethal osteochondrodysplasia.
3891957 - Ultrasound investigation of the fetal cerebral ventricles.
2286037 - Imaging problems in obstetrics.
16787617 - Role of pathological cardiotocography in evaluating fetal well-being.
9626847 - Outcome of pulmonary vascular disease in pregnancy: a systematic overview from 1978 thr...
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    
Affiliation:
University of New South Wales, New South Wales, Australia.
Export Citation:
APA/MLA Format     Download EndNote     Download BibTex
MeSH Terms
Descriptor/Qualifier:
Adult
Breech Presentation / epidemiology*,  ultrasonography*
Cesarean Section
Female
Gestational Age
Humans
Longitudinal Studies
Maternal Age
Medical Records
New South Wales / epidemiology
Parity
Pregnancy
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.