Document Detail

Determination of amniotic fluid volume in twin pregnancies: ultrasonographic evaluation versus operator estimation.
MedLine Citation:
PMID:  10871484     Owner:  NLM     Status:  MEDLINE    
OBJECTIVE: We sought to determine the accuracy of amniotic fluid volume estimation (visually) in diamniotic twin pregnancy versus ultrasonography techniques. STUDY DESIGN: In this prospective study the volume of each sac in 23 sets of diamniotic twin pregnancies was subjectively and objectively estimated by a second-year obstetric resident, nurse sonographer, maternal-fetal medicine fellow, and maternal-fetal medicine staff. The actual volume was confirmed by amniocentesis and a dye-dilution technique. RESULTS: There was no difference in the total number of correct estimates of volume by level of operator experience (P =.98), ultrasonography technique (P =.87), or combined subjective versus objective correct estimates (P =.87). Identification of low volume was not different among the four evaluators (P =.48), but the percentage of correct estimates was poor (7%-29%). The 2-diameter pocket was a better predictor of oligohydramnios (57%) than the amniotic fluid index or the largest vertical pocket (12.5%; P =.002). CONCLUSION: The extremes of volume (low or high) are poorly identified by the subjective or objective assessment of volume.
E F Magann; S P Chauhan; N S Whitworth; P Anfanger; B K Rinehart; J C Morrison
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Publication Detail:
Type:  Comparative Study; Journal Article; Research Support, Non-U.S. Gov't    
Journal Detail:
Title:  American journal of obstetrics and gynecology     Volume:  182     ISSN:  0002-9378     ISO Abbreviation:  Am. J. Obstet. Gynecol.     Publication Date:  2000 Jun 
Date Detail:
Created Date:  2000-07-25     Completed Date:  2000-07-25     Revised Date:  2006-11-15    
Medline Journal Info:
Nlm Unique ID:  0370476     Medline TA:  Am J Obstet Gynecol     Country:  UNITED STATES    
Other Details:
Languages:  eng     Pagination:  1606-9     Citation Subset:  AIM; IM    
Department of Obstetrics and Gynecology, University of Mississippi Medical Center, Jackson, USA.
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MeSH Terms
Amniotic Fluid / metabolism*,  ultrasonography
Obstetrics / methods
Oligohydramnios / ultrasonography
Pregnancy, Multiple / metabolism*
Prospective Studies
Ultrasonography / methods,  standards

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