anovulation


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anovulation

 
absence of ovulation.

an·ov·u·la·tion

(an'ov-ū-lā'shŭn),
Suspension or cessation of ovulation.

anovulation

/an·ov·u·la·tion/ (an″ov-u-la´shun) absence of ovulation.

anovulation

(ăn-ō′vyə-lā′shən, -ŏv′yə-)
n.
The failure, cessation, or suppression of ovulation.

anovulation

[an′ovyəlā′shən]
a failure of the ovaries to produce, mature, or release ova. The condition may result from ovarian immaturity or postmaturity; altered ovarian function, as in pregnancy and lactation; primary ovarian dysfunction, as in ovarian dysgenesis; or disturbed interaction of the hypothalamus, pituitary gland, and ovary caused by stress or disease. Oral contraceptives suppress ovulation. Anovulation may also be an adverse side effect of medications prescribed in the treatment of other disorders. anovular, anovulatory, adj.

an·ov·u·la·tion

(an'ov-yū-lā'shŭn)
Suspension or cessation of ovulation.

anovulation

Failure of the ovaries to produce eggs so that conception is impossible. This may result from low levels of gonadotrophin-releasing hormone, excess prolactin, pituitary failure, excessive exercise, anorexia nervosa, stress, KALLMAN'S SYNDROME, SHEEHAN'S SYNDROME, pituitary tumours, excess radiation to the brain, or from natural states such as pregnancy and lactation. Anovulation is also caused by oral contraceptives.

Anovulation

The absence of ovulation.

anovulation

failure to ovulate. The animal may show signs of estrus but the ovum is not shed and fertilization does not take place. This sequence of events can be observed by rectal examination in the cow and mare and by peritoneoscopy in smaller species.
References in periodicals archive ?
Anovulation results in the prolonged release of estrogen and the relative lack of progesterone resulting in disordered proliferative endometrium.
This problem contributes to increase the percentage of animals that commonly are reported in anestrus, when sometimes there can be problems associated with the inadequate detection of estrus, and not strictly by inactive ovaries or true anestrus (3), or alterations in the follicular development, such as anovulation and absence of CL, a situation that has also been raised by other authors (29).
317), in total 11 (13%), Between second and third evaluation there was no difference, There was one reduces miscarriage rate, due to stop of metformin treatment during pregnancy, There was no congenital anomaly at birth and eleven infants developed well at one year follow-up, Multiple regression model was performed to evaluate the anovulation risk in PCOS women as a function of anthropometric, metabolic and hormonal values (Table 3), Because of the high correlation between anovulation and progesterone (r =0.
Approximately 4 Percent of women of reproductive age present with hyperandrogenism and anovulation 17.
Hyperprolactinaemia is a major cause of anovulation and is responsible for menstruation disorders and infertility.
Penner examined the frequencies of 1 woman's spontaneous OAEs intermittently for 295 days and found that anovulation, as evidenced by amenorrhea or induced by oral contracepnon, reduced the fluctuation of spontaneous OAE frequencies relative to the naturally occurring menstrual cycle.
9%), RTIs (81%), uterine fibroids (62%), anovulation (68.
Polycystic ovarian syndrome (PCOS) is also known as Stein-Leventhal syndrome or hyperandrogenic chronic anovulation and is the long-term inability to release eggs from ovaries which can be fertilized.
5 The PCOS is a heterogeneous condition which is defined by the presence of two out of the three criteria: oligo- and/or anovulation, hyperandrogenism (clinical and/or biochemical), polycystic ovaries (with the exclusion of other etiology).
2) Anovulation and oligo-ovulation account for approximately 40% of female infertility factors, and in this group polycystic ovarian disease (PCOS) is the predominant factor (80%).
Anovulation, the ovulation failure appear to be caused by the some endocrine malfunction that result in the development of anovular heat in cows.