Sexually Transmitted Disease Statistics
Sexually Transmitted Disease Statistics
复制标题
性传播疾病统计
DOI:
10.1177/014107688207500103
复制
发表时间:
1982
影响因子:
17.3
通讯作者:
M. Adler
中科院分区:
文献类型:
--
作者:
M. Adler
significance of these assays in detail (Scammell, McGarrick, Chamberlain & Jeffcoate, in preparation) and concluded that hyperprolactinaemia is the most over-diagnosed condition in endocrinology! A further 25% are requests for androgen assays. These requests may reflect the special interest of our hospital in androgen-related problems. In practice, our experience is that androgen assays, whilst often of relevance and interest, are not often of direct clinical value in the management of the individual patient. About 20% of our routine requests are for plasma progesterone to confirm or exclude ovulation in patients with infertility and regular menstruation and after induction of ovulation. The assays are of value only in the mid-luteal phase and are difficult to interpret in patients with oligomenorrhoea. They are useless in amenorrhoea and in the follicular phase of the cycle. Whilst the foregoing should be self-evident, abuses of our service still do occur. Identification of the so-called 'defective luteal phase' requires repeated progesterone measurements to establish a secretion pattern reduced either in amount or duration. This condition, if it exists, cannot be diagnosed on the basis of only one or two progesterone assays. The pituitary gonadotrophin assays (about 15% of requests) are nearly always done together, although the value of luteinising hormone (LH) and follicle-stimulating hormone (FSH) assays are somewhat different. Both will be elevated in patients with primary ovarian failure at whatever age this occurs, but FSH is a better discriminant in this respect. An important biochemical feature of the polycystic ovary syndrome is an increase in the LH: FSH ratio. Gonadotrophin assays are rarely of value in patients with regular menstruation unless frequent samples are taken around the expected mid-cycle point. Two distinct oestradiol assays are in use in our hospital: one of them is useful, indeed essential; the other, almost useless. A quick (2 hour) plasma oestradiol assay is used to monitor induction of ovulation and as the results are available the same day this allows appropriate adjustment of the dosage. A long, analytically more accurate, oestradiol assay is also in use. This is often requested for patients with evidence of ovarian failure, especially those in the perimenopausal period. In my view the gynaecologist can obtain a quicker and biologically more accurate idea of the oestrogen status of the patient by taking a careful history, examining the patient and her vaginal cytology and by doing a simple bioassay such as a progestogen-withdrawal test. It is impossible to predict precisely any future developments in the application of endocrinology to gynaecology. Two trends may be discerned which may become prominent. First, many now recognize that the estimation of hormone concentrations in peripheral plasma does not necessarily reflect the biological significance of the hormone. It is likely that tests of tissue binding and end-organ response will be devised and applied clinically. Secondly, as analytical methods become more powerful they also become simpler and cheaper (like computers). There is a development towards bedside pathology using simple techniques (e.g. with 'dip-sticks') which will progressively erode the gap between the laboratory and the clinician and bring hormone analyses to the place where they are most effective close to the patient. S L Jeffcoate Professor of Biochemical Endocrinology Chelsea Hospital for Women, London