Amenorrhea
Amenorrhea is common gynecologic symptoms of the disease. Refers to the cessation of friends at least six months. According to the causes, divided into two categories: The first category is that the physiological amenorrhea due to a physiological causes of women in a certain period of time and not menstrual cramps, for example, before the onset of pregnancy, and post-lactation period, such as postmenopausal. The other is the pathological amenorrhea is that, for some pathological reasons not women menstrual cramps. According to the age of onset can be divided into two categories of primary and secondary. The former refers to all women aged 18 years or mature Second Sex levy no more than 2 years of menstrual cramps, which refers to women who have had rules menstrual cramps, but because after a certain period of rational reasons to stop 6 months or more. This chapter describes only pathological amenorrhea.
[Etiology and Category:
Menstruation is endometrial cyclical changes in the cyclical bleeding. Normal menstrual cycle is hypothalamus - pituitary - ovarian axis all aspects of the endocrine function of the adjustment, if any one link will take place obstacles in menstrual disorders, and sometimes lead to amenorrhea. Both primary and secondary amenorrhea, and the causes of both its common also different. Control of the normal menstrual cycle has four main components, the failure of a link will appear amenorrhea:
A uterine amenorrhea amenorrhea due to the uterus, normal menstrual regulation, functional ovarian, endometrial not have normal ovarian response, it said uterus amenorrhea. Of the uterus caused amenorrhea common diseases are:
(1) endometrial injury or adhesion syndrome often occur in abortion, postpartum hemorrhage, or bleeding after curettage abortion, the number is due to excessive curettage, damage the uterus, causing Asherman, there amenorrhea.
(B) Endometritis the most common result of endometritis amenorrhea TB uterine mucositis, post-abortion or other serious postpartum endometritis may also occur amenorrhea.
(C) absent or hypoplastic uterus because of the renal hypoplasia or not the result of the development of uterine hypoplasia or not, often manifested as primary amenorrhea.
(D) after hysterectomy or uterine cavity after radiation therapy for uterine reproductive tract disease after resection or uterine cancer as a result of certain brachytherapy treatment of endometrial damage arising after amenorrhea.
Second, ovarian amenorrhea amenorrhea due to the ovary, ovarian sex hormone level is low, endometrial cyclical changes do not result in amenorrhea, common diseases are:
(1) Ovarian congenital hypoplasia or so, lack of ovarian development, or just a cord-like non-functional, multi-primary amenorrhea, common diseases are:
1, and the most common chromosomal abnormality ① with Turner syndrome mosaicism such as nuclear ② 45, XO/46, XY, 45, XO/46, XX, 45, XO/46, XXX, 45, XO/47 , such as XXX.
2, as simple chromosome normal ovarian hypoplasia.
(B) ovarian function premature senility early postmenopausal women in the 40-year-old postmenopausal women who had previously called ovarian function premature senility (premature ovarian failure). Patients demonstrated secondary amenorrhea, and the menopausal syndrome with symptoms such as facial flushing, RUF fever, sweating, mood fluctuations, internal and external genital mutilation and the Second Sex levy gradually shrinking and degradation.
(C) ovariectomized or organization due to the destruction of more than surgical resection of bilateral ovarian or bilateral ovarian by radiation therapy after ovarian tissue destruction resulting loss of function, performance for the primary or secondary amenorrhea. Severe inflammation can also destroy ovarian ovarian tissue caused amenorrhea.
(4) ovarian tumors have androgen ovarian tumors because of the excessive androgen suppression of the hypothalamus - pituitary - ovarian axis function caused amenorrhea. Estrogen secretion of granulosa cell tumor can sometimes cause temporary amenorrhea is the result of sustained secretion of tumor estrogen, and restraining ovulation, there endometrial hyperplasia caused amenorrhea.
Third, pituitary amenorrhea is the major pituitary lesion. Or organic diseases of the anterior pituitary dysfunction can affect gonadotropin secretion, thus affecting ovarian there amenorrhea, the major diseases:
(1) the anterior pituitary dysfunction
1, pituitary induced amenorrhea due to pituitary ischemia, inflammation, radiation and surgery, such as the destruction of the anterior pituitary function, the performance of some or all of loss of function caused amenorrhea. Sheehan syndrome is due to postpartum hemorrhage and shock caused by the organization before the pituitary avascular necrosis, pituitary dysfunction in amenorrhea, emaciated and looking pale, Boling, no milk, hair loss and other symptoms. Second Sex and the internal and external genital levy gradually shrinking. Patients may also be associated with low blood sugar, low blood pressure, low basic metabolism, such as loss of libido.
2, gonadal function of the pituitary promoting a low rare genetic disease can be manifested as a single primary pituitary gonadotropin, or the lack of a single growth hormone deficiency, demonstrated for the primary amenorrhea.
(2) of pituitary tumor anterior pituitary tumor is the most common brain tumor, many different types. By electron microscopy and by the clinical data and the secretion of hormones, can be divided into adenoma growth hormone, prolactin adenomas, adenomas thyroid stimulating hormone, gonadotropin adenoma mixed tumors, non-functional pituitary adenomas, etc.. According to the different nature of the tumor in different symptoms, but there are amenorrhea performance. The age of onset different, there are also different types of amenorrhea, before the onset of adolescence, primary amenorrhea frequently manifests itself in adolescence showed the incidence of secondary amenorrhea. Craniopharyngioma slow growth, and more on the sella turcica, any age could occur.
4. Hypothalamic amenorrhea under the most common types of amenorrhea, the hypothalamus pituitary dysfunction affected, thereby affecting ovarian caused amenorrhea. The etiology is complex, because of the central nervous organic diseases, mental factors, systemic disease, drugs and other secretory function disorder caused:
(1) mental, neurological factors
1, the environment changes, such as over-stretched mental trauma, fear, anxiety, as well as various external stimuli such as cold, and other central nervous system and can lead to the hypothalamus between dysfunction, and through hypothalamus - pituitary - ovarian axis, ovulation barriers affecting mature follicles caused amenorrhea.
2, the spirit of Anorexia Nervosa caused dysfunction of the hypothalamus of the disease. Patients with anorexia, seriously emaciated, amenorrhea, and other thyroid, adrenal, gonadal, pancreas, and other functions are lower.
(B) nutrient malnutrition due to consumption of certain disorders or diseases, such as gastrointestinal dysfunction, and severe tuberculosis, severe anemia, schistosomiasis, malaria, caused systemic malnutrition, which affects the hypothalamus of gonadotropin-releasing hormone and growth Synthesis and secretion of hormones to suppress gonadotropin, gonadal dysfunction caused by primary or secondary amenorrhea.
(C) drugs inhibit some women's syndrome needle injection of long-acting contraceptive lead after oral contraceptives or secondary amenorrhea, the original common in women after abortion menstrual disorders or premature use of contraceptives, is due to inhibition of the drug hypothalamus and pituitary the function is often reversible, general withdrawal 3 to 6 months can be natural recovery.
(D) In addition to patients with amenorrhea Yiru also sustained amenorrhea, milk secretion, in the genital atrophy. Hypothalamus Shengru-inhibitory factor or reduce dopamine can lead to abnormal lactation, and gonadotropin-releasing hormone secretion caused by lack of amenorrhea. Yiru result of many causes, such as oral contraceptives, long service reserpine, chlorpromazine, Mian Seoul etc. can cause amenorrhea Yiru syndrome.
(5) patients with polycystic ovary syndrome mainly amenorrhea, infertility, hirsutism, obesity, bilateral ovarian increasing LH / FSH ratio High, ovarian secretion of testosterone and Androstenedione volume increased, a corresponding reduction in estrogen that without ovulation, there amenorrhea.
(6) Other endocrine dysfunction adrenal gland, thyroid gland, pancreas dysfunction can be caused amenorrhea, a common disease hyperthyroidism and shortcomings, hyperthyroidism adrenal cortex, such as adrenal tumor.
[Diagnosis]
First of all to find the causes amenorrhea, or hypothalamus - pituitary - ovarian axis adjustment disorders in which a link, and then determine which is caused by a disease.
First, asked in detail about how patients with a history of menstrual history, age at menarche, menstrual cycle, menstrual, the level. Understanding of their growth and development history, family history, childhood health conditions, whether congenital defects or other diseases, taking off drugs, required married women to their reproductive history, post-natal complications. In addition to the situation prior to the onset asked, have any incentive to lead to amenorrhea spirit of factors such as environmental change, all kinds of diseases.
Second, physical examination should pay attention to body, whether it is normal for development, whether deformities, attention should be paid to their height, weight, limbs, trunk ratio, intelligence, nutrition and health. Gynaecological examinations should pay attention to the development of internal and external genitalia, whether defects, deformities, as well as distribution of The Second Sex levy such as hair, breast development, such as whether lactation.
Third, aided diagnosis methods
(1) uterine function of the inspection, is used mainly to understand the uterine endometrium and function, a common method:
1, the diagnosis of endometrial tissue curettage and too many inspections apply to married women, to understand whether the uterine smooth, and the depth and width of uterine, endometrial Guaqu sent to understand pathological examination of ovarian hormones endometrial reaction cyclical changes, except tuberculosis uterine mucositis possible, and the scraps of a Mycobacterium tuberculosis culture.
2, uterus, fallopian tube lipiodol angiography understanding of the uterine cavity shape, the size, whether deformities and tubal situation.
3, endoscopy laparoscopy direct peep uterus, fallopian tubes and ovaries, and a biopsy. Sometimes needed for the observation of Hysteroscopy and endometrial uterine cavity, sent from endometrial tissue pathological examination, observation of uterine cavity whether malformations.
4, drug testing
(1) Progesterone test two methods: ① progesterone intramuscular injection 20 mg daily for 3 to 5 days; ② Medroxyprogesterone 10 mg daily oral even served five days. After stopping 3-7 days to withdraw properties for the bloodshed positive results, suggesting that functional endometrial, has been a certain level of estrogen, progesterone response from stripping.
(2) test such as estrogen progesterone test was negative (note in patients with low levels of estrogen, progesterone no reaction to it), can be used for estrogen trial. That is, to serve patients Yixicifen 1 mg daily, for 20 days or intramuscularly estradiol benzoate Note 2 mg every other day, a total of 5 times. After the withdrawal from 2 to 7 days dismantling properties bloodshed, suggesting that the hormone has endometriosis and uterine smooth normal reaction.
(B) ovarian function checks
1, vaginal examination Watchlist exfoliated cells, in the bottom of the percentage of cells, cell surface to reflect the higher percentage of the higher levels of estrogen.
2, Crystal checks such as cervical mucus smear on the dentate gyrus crystallization see sheep, goats dentate crystallization of the more obvious, the more rough, suggesting that estrogen significantly. Such as the Pap smear, see rows of oval body, suggesting that the role of estrogen and progesterone on the basis of the impact has been.
3, such as the basal body temperature of the menstrual cycle than two weeks after the first two weeks of basal body temperature increased by 0.4 to 0.6 ℃, for duplex-type, suggesting that ovarian with ovulation and luteal formation total. Description normal ovarian function.
4, in the serum estrogen and progesterone content such as estrogen and progesterone levels low, suggesting that ovarian function is not normal or failure.
(C) pituitary function tests suggested that estrogen positive test in patients with low estrogen levels, but the lack of estrogen may be due to ovarian dysfunction, but also may be due to the lack of a result in gonadotropin secretion of ovarian steroid hormones not, it needs further examination pituitary function.
1, determination of serum LH and FSH to the PRL output in the menstrual cycle in normal serum FSH value of 0.66 to 2.50 μ g / L LH values ranged from 6 to 30 IU / L, ovulation peak value of about three times the value of the foundation. If FSH than 2.5 μ g / L tips ovarian failure, LH less than 6 IU / L said gonadotropin dysfunction. If FSH and LH are low, suggesting that the central pituitary dysfunction or higher.
In the normal menstrual cycle, 24-hour urinary FSH biometric mouse uterus usually less than 52.8 units, if the FSH level higher than the 52.8 units mouse uterus, suggesting that hyperthyroidism pituitary, ovary amenorrhea reasons. If FSH less than 6.6 units mouse uterus, suggesting that pituitary dysfunction, amenorrhea in the pituitary or their reasons for the above positions.
2, Sella radiography suspected pituitary tumor can be used for sella radiography. Greater tumor can affect bone sella turcica and saddle cavity size, X-ray can be identified. Such as smaller tumor still stratified radiography inspection or for more sella to fault radiography.
3, in patients with pituitary stimulation test when the LH and FSH levels are low, should be conducted to distinguish between pituitary stimulation test in the pituitary lesions, in the hypothalamus suppression. Pituitary stimulation test is LHRH100 μ g dissolved in 5 ml saline, intravenous, 30 seconds End Note. Injection before and after injection of 15,60,120 minutes borrow 2 ml blood. Serum LH levels (RIA). If injection of 30 to 60 minutes before the injection of LH increased to more than three times the pituitary function of good tips on LHRH response is good, in the hypothalamus causes amenorrhea or more parts. LH injection after the increased value does not increase or not, suggesting that may cause amenorrhea in the pituitary.
4, other tests such as the suspected endocrine dysfunction or other deformity, and so on, should be for the relevant biochemistry, pathology, pathophysiology check-such as nuclear and chromosomal banding analysis, pelvic inflatable contrast, the site of B-mode ultrasonography checks to support the diagnosis.
[Treatment]
One to correct systemic health of female genital mutilation is part of the overall, systemic health will affect genital mutilation, treatment of amenorrhea, it should be corrected in patients with systemic health.
Second, find causes for the organic diseases caused amenorrhea given appropriate treatment. Such as TB uterine mucositis that is, to anti-tuberculosis treatment. Asherman patients should be placed and expansion of intrauterine contraceptive ring, again to prevent adhesion. Pituitary or in the diagnosis of ovarian tumors are defined, according to the tumor location, size, nature determine treatment programmes, choose surgery, radiotherapy and chemotherapy other comprehensive measures.
Third, hormone replacement therapy on ovarian congenital dysplasia, or damage to or destruction of ovarian function that premature senility are available hormone replacement therapy. General application of artificial cycle hormone therapy. Application of sex hormones, a kind of cyclical menstrual bleeding dismantling properties, on the one hand with the correct physical and psychological state, on the other, to promote genital mutilation and Second Sex levy a certain level of development.
(A) low-dose estrogen treatment cycle of its role is to promote pituitary function, luteinizing hormone secretion, thereby increasing the secretion of ovarian hormones, and to promote ovulation.
(B) estrogen and progesterone sequential therapy whose role is to inhibit hypothalamus - pituitary axis, may resume after stopping menstruation and ovulation.
(C) estrogen and progesterone combined therapy whose role is to inhibit pituitary gonadotropin, after stopping occasionally to jump role due to menstruation and ovulation resumed. Use of oral contraceptives, a night service, since the service from the fifth day of menstruation, and even served 22 days to stop. The first five days of next menstrual started the second course, the sharing of 3 to 6 cycles.
(D) if inducing ovulation failure of ovarian function and fertility requirements of the patients, hormone or its analogues can be induced ovulation:
1, pituitary dysfunction in postmenopausal women using urine from the follicle stimulating hormone (hMG), to promote follicle growth, secretion of estrogen. And the merger of similar pituitary luteinizing hormone human chorionic gonadotropin (hCG), the mature follicles that can promote ovulation and luteal promote the formation and development.
2, in the low sexual function, ovary and pituitary a normal reaction, hypothalamus insufficiency or lack of co-ordination, which uses chlorine Di phenol-amine promote hypothalamus of gonadotropin-releasing hormone secretion, and to rectify its function of inducing ovulation.
3, hypothalamus insufficiency, which LHRH inadequate secretion, and can be pulsed injection of trace LHRH inducing ovulation.
4, Application for Bromocriptine treatment of patients with amenorrhea Yiru, whose role is to promote inhibition Lactagogue hormone prolactin to reduce, at the beginning, with small dose of 1.25 mg, 2 to 3 times a day, such as no obvious reaction that gradually increases volume, the largest daily dose should not exceed 10 mg.