| A model-based prediction for transvaginal ultrasonographic identification of early intrauterine pregnancy. | |
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MedLine Citation:
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PMID: 1595805 Owner: NLM Status: MEDLINE |
Abstract/OtherAbstract:
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OBJECTIVE: Our objective was to develop a mathematic model for the prediction of transvaginal ultrasonographic identification of intrauterine gestation as a function of human chorionic gonadotropin titer or gestational age. STUDY DESIGN: In this prospective, descriptive study normal intrauterine pregnancies of 31 patients from the Yale in vitro fertilization and embryo transfer program and infertility clinic were studied. Logistic regression analysis was used to develop a probability curve of transvaginal ultrasonographic detection of intrauterine pregnancy as a function of human chorionic gonadotropin titer or gestational age with a 5 MHz vaginal transducer. RESULTS: A model-based prediction was constructed. It revealed that nearly all intrauterine sacs should be identified by a human chorionic gonadotropin titer of 3000 mIU/ml (first international reference preparation) or by a gestational age of 37 days on the basis of the 5 MHz vaginal transducer. CONCLUSIONS: A model-based prediction for transvaginal ultrasonographic identification of early intrauterine pregnancy is presented that can be readily adapted by individual institutions using their own ultrasonographic equipment and human chorionic gonadotropin assay. |
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Authors:
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B S Shapiro; M Escobar; R Makuch; G Lavy; A H DeCherney |
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Publication Detail:
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Type: Journal Article |
Journal Detail:
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Title: American journal of obstetrics and gynecology Volume: 166 ISSN: 0002-9378 ISO Abbreviation: Am. J. Obstet. Gynecol. Publication Date: 1992 May |
Date Detail:
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Created Date: 1992-06-26 Completed Date: 1992-06-26 Revised Date: 2004-11-17 |
Medline Journal Info:
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Nlm Unique ID: 0370476 Medline TA: Am J Obstet Gynecol Country: UNITED STATES |
Other Details:
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Languages: eng Pagination: 1495-500 Citation Subset: AIM; IM |
Affiliation:
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Department of Obstetrics and Gynecology, Yale University School of Medicine, New Haven, Connecticut. |
Export Citation:
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APA/MLA Format Download EndNote Download BibTex |
| MeSH Terms | |
Descriptor/Qualifier:
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Chorionic Gonadotropin
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blood Embryo Transfer Female Fertilization in Vitro* Gestational Age Humans Mathematics Models, Biological* Pregnancy Pregnancy Tests* Prospective Studies Regression Analysis Ultrasonography, Prenatal* |
| Chemical | |
Reg. No./Substance:
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0/Chorionic Gonadotropin |
From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine
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