anovulatory menstrual cycle

無排卵周期症

WordNet

1. pass through a cycle; "This machine automatically cycles"
2. an interval during which a recurring sequence of events occurs; "the never-ending cycle of the seasons" (同)rhythm, round
3. recur in repeating sequences
4. a single complete execution of a periodically repeated phenomenon; "a year constitutes a cycle of the seasons" (同)oscillation
5. a periodically repeated sequence of events; "a cycle of reprisal and retaliation"
6. a series of poems or songs on the same theme; "Schuberts song cycles"
7. cause to go through a recurring sequence; "cycle the laundry in this washing program"
8. the sport of traveling on a bicycle or motorcycle
9. of or relating to menstruation or the menses; "menstrual period" (同)catamenial

PrepTutorEJDIC

1. 『周期』,循環期;一巡り / 周波,サイクル / (英雄・伝説などを扱った)一連の詩(物語) / 『自転車』;三輪車;オートバイ / 自転車に乗る / 循環する,反復する
2. 自転車に乗ること,サイクリング
3. 月経の

Wikipedia preview

出典(authority):フリー百科事典『ウィキペディア（Wikipedia）』「2019/12/24 12:01:25」(JST)

wiki en

[Wiki en表示]

The anovulatory cycle is a menstrual cycle characterized by varying degrees of menstrual intervals and the absence of ovulation and a luteal phase. In the absence of ovulation, there will be infertility.

Patterns

While the normal menstrual cycle in the human typically lasts 4 weeks (28 days, range 24–35 days) and consists of a follicular phase, ovulation, and a luteal phase, followed by either menstruation or pregnancy, the anovulatory cycle has cycle lengths of varying degrees. In many circumstances, menstrual intervals are prolonged exceeding 35 days leading to oligomenorrhea (cycle >35 – 180 days interval), or even longer, amenorrhea. In other cases, menstruation may be fairly regular (eumenorrhea), or more frequent (intervals < 21 days), or there may be a loss of menstrual pattern (menorrhagia, dysfunctional uterine bleeding).

Estrogen breakthrough bleeding

Normal menstrual bleeding in the ovulatory cycle is a result of a decline in progesterone due to the demise of the corpus luteum. It is thus a progesterone withdrawal bleeding. As there is no progesterone in the anovulatory cycle, bleeding is caused by the inability of estrogen — that needs to be present to stimulate the endometrium in the first place — to support a growing endometrium. Anovulatory bleeding is hence termed 'estrogen breakthrough bleeding.

Risks

1. Anemia
2. Bone density loss
3. Endometrial cancer
4. Infertility

Diagnosis

A physician needs to investigate the cause of anovulation. Common causes are:

1. Polycystic ovary syndrome
2. Hypothalamic dysfunction
3. Perimenopause
4. Ovulatory Dysfunction
5. Thyroid disorders
6. Hyperprolactinemia
7. Eating Disorders, dieting or other Disordered eating
8. Female Athlete's Triad

With excessive or prolonged bleeding the diagnosis has to be made by a physician on a speedy basis. Other causes of gynecological bleeding need to be excluded, specifically bleeding related to pregnancy, leiomyoma, and cancer of the cervix or uterus.

Management

Women who do not ovulate and who want to get pregnant need a medical work-up to find out why they do not ovulate. Drugs are often given to induce ovulation, including oral medication such as clomiphene or injectable medications. In patients who do not want to get pregnant anovulation can be managed with the use of cyclic progesterone or progestin supplementation or use of hormonal contraception.

See also

• Menstrual cycle
• Ovulation
• Anovulation

UpToDate Contents

全文を閲覧するには購読必要です。 To read the full text you will need to subscribe.

• 1. 妊娠していない生殖可能年齢の女性における不正子宮出血に対するアプローチapproach to abnormal uterine bleeding in nonpregnant reproductive age women [show details]
  … Abnormal uterine bleeding (AUB; a term which refers to menstrual bleeding of abnormal quantity, duration, or schedule) is a common gynecologic complaint, accounting for one-third of outpatient visits …
• 2. 異常な子宮出血のマネージメントmanagement of abnormal uterine bleeding [show details]
  … Chronic abnormal uterine bleeding (AUB), a term that refers to menstrual bleeding of abnormal quantity, duration, or schedule, is a common gynecologic problem, occurring in approximately 10 to 35 percent …
• 3. 思春期の女性に生じる不正子宮出血：評価と診断法abnormal uterine bleeding in adolescents evaluation and approach to diagnosis [show details]
  … The management of AUB in adolescents and a more comprehensive discussion of the evaluation of AUB in older reproductive-age women are presented separately. The normal menstrual cycle results from a complex …
• 4. 思春期に生じる異常子宮出血：マネージメントabnormal uterine bleeding in adolescents management [show details]
  … As an example, . The normal menstrual cycle, the evaluation of AUB in adolescents, and the evaluation and management of causes of AUB other than anovulatory uterine bleeding in premenopausal women are discussed …
• 5. 女性における生殖器出血の鑑別診断differential diagnosis of genital tract bleeding in women [show details]
  …activator inhibitor 1 (PAI-1). PAI-1 blocks fibrinolysis, thereby stabilizing clots . In anovulatory menstrual cycles, the absence of a regular cyclical progesterone stimulus results in excessive production …

English Journal

• Alterations in long noncoding RNAs in women with and without polycystic ovarian syndrome.

• Butler AE, Hayat S, Dargham SR, Malek JA, Abdulla SA, Mohamoud YA, Suhre K, Sathyapalan T, Atkin SL.
• Clinical endocrinology. 2019 Sep;().
• Long noncoding RNAs (lncRNAs) are RNA transcripts over 200 nucleotides long that are not translated into protein; however, there is increasing evidence of their regulatory functions. To date, there are few studies measuring lncRNA in control women or women with polycystic ovary syndrome (PCOS). To d
• PMID 31482638

• Defining polycystic ovary syndrome phenotype in Vietnamese women.

• Cao NT, Le MT, Nguyen VQH, Pilgrim J, Le VNS, Le DD, Pham CK, Aharon D, Hill MJ.
• The journal of obstetrics and gynaecology research. 2019 Aug;().
• This study aimed to evaluate the unique phenotype of the Vietnamese polycystic ovarian syndrome (PCOS) population. In this multicenter cross-sectional descriptive study, a total of 901 reproductive-age women were recruited at three medical centers in Vietnam from June 2016 to May 2018. Group I inclu
• PMID 31435998

• Acupuncture for polycystic ovarian syndrome.

• Lim CED, Ng RWC, Cheng NCL, Zhang GS, Chen H.
• The Cochrane database of systematic reviews. 2019 07;7()CD007689.
• Polycystic ovarian syndrome (PCOS) is characterised by the clinical signs of oligo-amenorrhoea, infertility and hirsutism. Conventional treatment of PCOS includes a range of oral pharmacological agents, lifestyle changes and surgical modalities. Beta-endorphin is present in the follicular fluid of b
• PMID 31264709

Japanese Journal

• 女性から男性への性転換症者の性腺刺激ホルモン分泌パターンから見た非典型的性アイデンティティの脳基盤

• 貴邑 冨久子,舩橋 利也,木原 彬,榊原 秀也,平原 史樹
• 日本生理学会大会発表要旨集 2004(0), S41-S41, 2004
• … In 2 FTMs, the surge secretion of LH was atypical, showing extremely low amplitudes, in accord with the clinical diagnosis of anovulatory menstrual cycles based on the basal body temperature (BBT), whereas pulsatile secretions of LH in both follicular and luteal phases were typical. … Two other FTMs showed almost typical LH secretory patterns and BBT during the cycle, being homosexual. …
• NAID 130005447311

• The Effect of Sex Steroid Hormones on Substrate Oxidation during Prolonged Submaximal Exercise in Women.

• Hackney A.C.,Muoio D.,Meyer W.R.
• The Japanese Journal of Physiology 50(5), 489-494, 2000
• … Four were classified as anovulatory-oligomenorrheic and four were classified as ovulatory-eumenorrheic. …
• NAID 130004435737

• GnRHagonistのゴナドトロピン放出刺激作用を用いた無排卵治療と負荷試験としての有用性について

• 石原 理,飯野 好明,斎藤 正博,関 博之,木下 勝之
• 日本内分泌学会雑誌 69(2), 102-108, 1993
• … In an attempt to induce ovulation in Clomiphene resistant secondary amenorrhoea patients, the gonadotrophin-releasing hormone agonist (Buserelin)(600-900μg/day) was administered in 13 cases aged 18 to 24 years for one week from day 5 of the menstrual cycle. … However, ovulation was observed in 6 cases, and the response to Clomiphene was recovered in all of these 6 cases in their subsequent menstrual cycles. …
• NAID 130001937088

Related Links

• Anovulatory Cycle: Symptoms and Treatment - Healthline

A menstrual cycle without ovulation is most common in two distinct age groups: Girls who’ve recently begun menstruating: In the year following a girl’s first period, known as menarche, she’s ...

• Anovulatory Cycle: Symptoms, Causes, and Treatment ...

An anovulatory cycle is a menstrual cycle where no egg is released While anovulatory cycles are associated with irregular bleeding, you can still have anovulatory cycles with a regular period There are some signs of anovulation you can track on your own, but for a conclusive diagnosis, see your healthcare provider

• Anovulatory Cycle: How to Get Pregnant Naturally - Fight Your ...

You have been trying to conceive for a long time. You are also getting your menstrual period every month. But you are not getting pregnant. You are frustrated about why you are not getting pregnant. You never realize that you have a major problem of anovulatory cycle. So What Is An Anovulatory Cycle? It simply ... Read more Anovulatory Cycle: How to Get Pregnant Naturally

---

★リンクテーブル★

リンク元	「無排卵周期症」「無排卵周期」
関連記事	「cycle」「anovulatory」「menstrual」「cycling」

「無排卵周期症」

　　[★]

英

anovulatory menstrual cycle (G9M)

関

無排卵周期

疫学

• 無排卵周期症の既往が子宮体癌のリスクファクターとなるらしい(G9M.150)

病因

• エストロゲン分泌の急激な減少　→　卵胞期において未熟な卵胞が退縮しエストロゲン分泌が低下　→　消退出血　　月経周期は28日よりも短くなる(25日未満)
• エストロゲン分泌の継続　→　卵胞期において未熟な卵胞が存在し続けプロゲステロンが出ないまま未排卵に終わる　→　らせん動脈が子宮内膜を栄養仕切れず消退出血　　月経周期は延長する(39日～3ヶ月)

徴候

NGY.152

• 月経周期の異常(28日)：頻発月経(25日未満)、希発月経(39日以上)
• 月経量の異常(出血量：50-150g)：過多月経、過少月経
• 月経持続期間の異常(3-7日)：過短月経(2日以下)、過長月経(8日以上)

「無排卵周期」

　　[★]

英

anovulatory menstrual cycle

関

無排卵性周期、無排卵月経

「cycle」

　　[★]

• サイクル、周期、回路

関

circuit

　 　 　 　 　 　 　 　

「anovulatory」

　　[★]

• adj.

• 無排卵の

関

anovulation

「menstrual」

　　[★]

• adj.

• 月経性の

　 　

「cycling」

　　[★]

• サイクリング