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Current practices in determining amnionicity and chorionicity in multiple gestations
Author(s) -
Wan Jennifer J.,
Schrimmer David,
Taché Véronique,
Quinn Kristen,
Lacoursiere D. Yvette,
James Gina,
Benirschke Kurt,
Pretorius Dolores H.
Publication year - 2011
Publication title -
prenatal diagnosis
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.956
H-Index - 97
eISSN - 1097-0223
pISSN - 0197-3851
DOI - 10.1002/pd.2663
Subject(s) - tertiary care , medicine , gestation , referral , medical diagnosis , obstetrics , retrospective cohort study , pediatrics , maternal fetal medicine , pregnancy , general surgery , family medicine , surgery , obstetrics and gynaecology , radiology , genetics , biology
Objective To evaluate the accuracy of amnionicity and chorionicity (A/C) diagnosis of referral physicians and a tertiary care center as compared to histopathologic diagnosis. Method A retrospective study of 289 multi‐fetal gestations was performed comparing A/C diagnoses of referring physicians, a tertiary care center, and histopathology. Results Two hundred and eighty‐nine multi‐fetal pregnancies were referred for evaluation; only 43.6% (126/289) carried an accurate diagnosis of A/C before tertiary care center evaluation. The tertiary care center accurately identified A/C in 94.8% (274/289) overall and 100% in first trimester twins and triplets. Referrals with an unspecified A/C diagnosis included 46.1% (113/245) twins and 64.1% (25/39) triplets. Conclusion Accurate diagnosis of A/C can be obtained by the early assessment of key sonographic findings. Referral providers are less accurate at determining A/C of mutifetal gestation when compared to a tertiary center, suggesting that an emphasis should be placed on enhancing these diagnostic skills in the general community or encouraging referral when diagnosis is ambiguous. Copyright © 2011 John Wiley & Sons, Ltd.