Trends in adolescent pregnancies

Pregnancies in adolescents aged under 17 years constitute about 1.3% of all births in Queensland. A study of 189 adolescent pregnancies at the Royal Women's Hospital, Brisbane in 1977-1979 showed adequate antenatal care, and antenatal complications similar to those of a control group. There were greater incidences of unplanned Caesarean section, postpartum haemorrhage and puerperal infection. The major difference in the adolescent group was a perinatal mortality more than double that for the overall hospital population. The role of inadequate education in reproduction in the genesis of many adolescent pregnancies is stressed.

Sites of steroid production in the polycystic ovary

Tissue culture of slices of polycystic ovaries shows that androstenedione and oestradiol are mostly produced by the cortical, cyst-containing portions, with little steroid production in vitro by medullary stromal tissues.

Blood pressure changes when uterine stimulants are used after normal delivery

Use of an automatic sphygmomanometer showed that intravenous ergometrine given immediately after delivery caused significant elevation of diastolic blood pressure in all 10 normotensive women studied. Blood pressure was also raised in some patients following the use of intramuscular oxytocin and ergometrine (Syntometrine). Uterine stimulants for use after delivery must be chosen with care.

Control chart for urinary oestriol excretion during pregnancy

Calculations to define the distribution of normal urinary oestriol excretion values during pregnancy are presented. The values had a normal distribution, uniform variance and increased linearly with time after logarithmic conversion. The variance could, therefore, be partitioned and a control chart constructed.

Bromocriptine, methyl testosterone and placebo for inhibition of physiological lactation: a controlled study

Lactation occurs when the fully developed breast is released from the inhibitory influence which oestrogen and progesterone exert upon the action of prolactin. The use of oestrogens to suppress lactation depends on a continuation of the peripheral, that is, mammary, inhibition of prolactin. Androgens are also believed to act by inhibition of the action of prolactin on the mammary gland epithelium. Bromocriptine, when compared in a double-blind trial with orally administered methyl testosterone and placebo, gave almost complete relief of breast discomfort and congestion, though a small amount of milk production was seen. Methyl testosterone, in the dosage used in this study, was quite ineffective in suppressing lactation or breast symptoms.

Hormone production by the intact human corpus luteum in vitro

Human CL removed during the menstrual cycle were cultured for up to 5 days. Production of progesterone, measured by radioimmunoassay of the culture fluid, continued throughout each experiment. Addition of hCG to the culture medium stimulated progesterone production in a biphasic manner.

Oestradiol production by human graafian follicles cultured in vitro

Intact human Graafian follicles recovered during the preovulatory phase of the menstrual cycle and cultured in vitro, gave a mean oestradiol production of 33 ng/hour over periods of 4 to 92 hours. Treatment of follicles with human pituitary gonadotrophin or human chorionic gonadotrophin resulted in an increased production of oestradiol.

Estrogen excretion patterns in induced ovulation

Observation of response to gonadotropins in the treatment of anovulation has allowed us to define the estrogen excretion pattern which leads to a successful single pregnancy. The typical pattern shows a low pretreatment urinary total estrogen excretion; treatment with gonadotropins, of human pituitary origin, is continued for about 14 days. There is a predictable rate of rise of preovulatory estrogen excretion (30 microgram/24 hr2). Human choronic gonadotropin--about 4000 IU--should be given when an estrogen excretion of 75-100 microgram/24 hr has been obtained. The use of this pattern of ovarian response is put forward as a useful guide in the planning of gonadotropin therapy.

Burkitt's lymphoma in Australia

An Australian case of Burkitt's lymphoma is reported. The clinical features of large ovarian masses and subsequent bone marrow invasion, as well as the results of investigations related to the Epstein-Barr virus, were more consistent with the American than the African type of Burkitt's lymphoma. After a good initial response to cyclophosphamide and vincristine, the tumour rapidly became resistant to these and other therapeutic measures and the patient died 10 months after diagnosis.

A rapid method for the estimation of estriol in plasma during pregnancy

A rapid, reliable fluorimetric method for the determination of estriol (E3) in plasma is described. The method is eminently suitable for use in hospital laboratories and provides results within 5 hours of the reception of samples. It has several features not found in other methods. As little as 0.2 ml of plasma is required, all additions and aliquoting procedures are semi-automated an no special technical skill is necessary. A technician can carry out 20 determinations per day. Average recoveries of 70% are routinely achieved, and the accuracy (2.4%) and the precision (4.0%) of the method are remarkably good for an assay of this type. A spectrofluorometer of high sensitivity, counting equipment and a high temperature oven are the essential major pieces of equipment.

Progress in fetal assessment

The growth areas in fetal assessment in late pregnancy have been studied by making a quantitative review of the papers in four obstetric journals. Of the 130 relevant papers published, in 1973, the most common subject treated was the phospholipid test of fetal lung maturity. Other important tests reviewed were estrogen assays, ultrasonic studies, human placental lactogen and alpha-fetoprotein measurements. The clinical value of phospholipid tests was demonstrated; liquor creatinine assays are much inferior in assessing fetal maturity. Plasma estriol assays are likely to be of increasing importance in clinical practice. Some caution should be applied in the interpretation of ultrasonic measurements of biparietal diameter as a test of fetal development and well-being.