Statements in which the resource exists as a subject.
PredicateObject
rdf:type
lifeskim:mentions
pubmed:issue
10
pubmed:dateCreated
1990-12-27
pubmed:abstractText
Vaginal sonography and determination of serum hCG levels were carried out in 22 healthy pregnant women every 2 to 4 days after the first positive pregnancy test until a living fetus was observed. Gestational age was calculated from the day of ovulation, assessed by LH surge or hCG administration, plus 14 days. A gestational sac of 1-3 mm was detected at a mean (SEM) of 31.2 (0.2) days of gestation (range 30-33 days). The corresponding mean hCG level was 730 iu/l (30) and the range 467-935 iu/l (International Reference Preparation). The yolk sac was detected at a mean of 36.0 (0.2) days, range 34-38 days, at a mean hCG level of 4130 iu/l (370), range 1120-7280 iu/l. Fetal heart motion was visible at a mean of 41.1 (0.3) days, range 39-43 days and the corresponding mean hCG level was 12,050 iu/l (1240), range 5280-22,950, iu/l. The yolk sac and the fetal heart motion were always seen when the sac exceeded 10 and 18 mm in mean diameter, respectively.
pubmed:commentsCorrections
pubmed:language
eng
pubmed:journal
pubmed:citationSubset
AIM
pubmed:chemical
pubmed:status
MEDLINE
pubmed:month
Oct
pubmed:issn
0306-5456
pubmed:author
pubmed:issnType
Print
pubmed:volume
97
pubmed:owner
NLM
pubmed:authorsComplete
Y
pubmed:pagination
899-903
pubmed:dateRevised
2006-11-15
pubmed:meshHeading
pubmed:year
1990
pubmed:articleTitle
Normal early pregnancy: serum hCG levels and vaginal ultrasonography findings.
pubmed:affiliation
Department of Obstetrics and Gynecology, University Central Hospital, Helsinki, Finland.
pubmed:publicationType
Journal Article, Research Support, Non-U.S. Gov't