| Very early pregnancy detection with endovaginal ultrasound. | |
| | |
MedLine Citation:
|
PMID: 3292977 Owner: NLM Status: MEDLINE |
Abstract/OtherAbstract:
|
There are many situations in which the earliest possible detection of an intrauterine pregnancy would enhance clinical management. Current radioimmunoassays for hCG can detect pregnancy as early as eight to 12 days post-conception. The ability to document an intrauterine pregnancy with ultrasound has lagged behind by two to three weeks. New high-frequency endovaginal transducers offer the promise of narrowing this gap. This study was undertaken prospectively on 235 patients all amenorrheic for seven weeks or less and requesting either pregnancy testing or termination. All had endovaginal ultrasound scans. We obtained hCG levels when no sac was seen or when the sac was less than 1.0 cm (initial experience revealed that all sacs over 1.0 cm were associated with hCG levels over 6000 mIU/mL) (International Reference Preparation). Ultrasound findings were correlated with pathology specimens and/or hCG levels where appropriate. Results indicated that normal pregnancies can be imaged when: 1) The sac is greater than 0.4 cm; 2) hCG is greater than 1025 mIU/mL (International Reference Preparation); and 3) the uterus is normal with a homogeneous echo pattern. This was not true in three of our cases with diffuse myomatous changes or a coexisting intrauterine device. |
| | |
Authors:
|
S R Goldstein; J R Snyder; C Watson; M Danon |
Related Documents
:
|
8559527 - Elevated second-trimester maternal serum hcg alone or in combination with elevated alph... 6374097 - Circulating beta-2-microglobulin levels during pregnancy and their possible relationshi... 22570267 - Improved diagnostic accuracy by using secondary ultrasound markers in the first-trimest... 10685527 - Human chorionic gonadotropin as a predictor of outcome in assisted reproductive technol... 1708007 - Treatment of hypertension in pregnancy. 3301447 - Antenatal ultrasonographic diagnosis of a congenital posterolateral diaphragmatic defect. |
Publication Detail:
|
Type: Journal Article |
Journal Detail:
|
Title: Obstetrics and gynecology Volume: 72 ISSN: 0029-7844 ISO Abbreviation: Obstet Gynecol Publication Date: 1988 Aug |
Date Detail:
|
Created Date: 1988-08-17 Completed Date: 1988-08-17 Revised Date: 2009-10-26 |
Medline Journal Info:
|
Nlm Unique ID: 0401101 Medline TA: Obstet Gynecol Country: UNITED STATES |
Other Details:
|
Languages: eng Pagination: 200-4 Citation Subset: AIM; IM |
Affiliation:
|
Department of Obstetrics and Gynecology, New York, University School of Medicine, New York. |
Export Citation:
|
APA/MLA Format Download EndNote Download BibTex |
| MeSH Terms | |
Descriptor/Qualifier:
|
Chorionic Gonadotropin
/
blood Evaluation Studies as Topic Female Humans Pregnancy* / blood Prospective Studies Time Factors Ultrasonography / methods* Vagina Yolk Sac / anatomy & histology |
| Chemical | |
Reg. No./Substance:
|
0/Chorionic Gonadotropin |
From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine
Previous Document: Choroid plexus cysts in the fetus: a benign anatomic variant or pathologic entity? Report of 41 case...
Next Document: Umbilical arterial systolic/diastolic values in normal twin gestation.