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LIQUOR BILIRUBIN VALUES IN EARLY PREGNANCY
Author(s) -
Carlton M. A.,
Sinha R.
Publication year - 1970
Publication title -
bjog: an international journal of obstetrics and gynaecology
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 2.157
H-Index - 164
eISSN - 1471-0528
pISSN - 1470-0328
DOI - 10.1111/j.1471-0528.1970.tb03510.x
Subject(s) - confidence interval , pregnancy , medicine , obstetrics , gestation , bilirubin , fetus , biology , genetics
Summary Liquor bilirubin concentrations have been measured chemically and spectrophotometrically throughout normal pregnancy in 80 patients and in 30 patients with fetuses affected by rhesus incompatibility. A normal curve and confidence intervals for a single observation of Δ 450 mμ. have been calculated. Prognostic criteria may be applied to gestations earlier than 28 weeks by use of the normal Δ 450 mμ. curve and the curve designating the 0·5 per cent confidence limit. Accurate criteria for intrauterine transfusion cannot be derived from Δ 450 mμ. values before 23–24 weeks and at this stage of pregnancy emphasis should be placed on the obstetric history.