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Summary Obstetrics- amenorrhea Mind map

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This mind map presents a structured, step-by-step clinical approach to amenorrhea, covering definitions, classification, causes, diagnostic pathways, investigations, and management in a visually organized format for rapid understanding and memorization. perfect for medical students, interns, and busy clinicians who want fast understanding, strong retention, and confident clinical reasoning.

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🔹 treatment varies depending upon the causes of the amenorrhea.

🔹
Treatment options include:
Dietary changes, including an increase in fat and calories in order to

🔹
stimulate estrogen production.

🔹🔹Counseling for eating disorders. treatment
Using stress reduction techniques to help regulate the period.
Hormonal supplements, like the birth control pill or patch, or
🔷
Amenorrhea is the absence of menstruation.
Primary:
- Absence of menses by age 16 with normal
🔹Surgery to remove cysts, fibroids or tumors
hormone replacement therapy. secondary sexual characteristics.
-absence of menses by age 14 without secondary


definition
🔷
sexual development.
secondary:
- Absence of menses for 6 months (or greater than
3times the previous cycle interval) in a previously

🔹
mnstruating female.
pregnancy, lactation or hysterectomy must be


🔹 🔹
excluder
prepubertal and post-menopausal conditions are

🔹 History
Physical examination
- Physical examination begins with vital
also to be excluded as physioiogical causes


signs, including height and weight, and DIAGNOSIS

🔹
with sexual maturity ratings
Laboratory evaluation
🔹 There is a difference of opinion about the age at
which
Primary Amenorrhea should be investigated--> 18 yrs.

🔹
often suggested.
Provided the patient has developed normal sec. sex.
Characteristics and cryptomenorrhoea has been
excluded. While those patient with Primary amenorrhea
and sexual
infantilism should be investigated at= age of 15 years or
2. GONADAl AGENESIS:
CLINICAL APPROACH 🌟
16 years (maybe earlier).

🔹 Events of Puberty :
(Failure of gonadal develop): no other cong. abn.
🔹
1. CHROMOSOM ALABNORMALITIES
Tuner's syndrome(45x0)
Thelarche (breast development)
3. RESISTANTOVARY SYNDROME
- A rare condition
-> gonadal dysgenesis
FEATURES:
🔹
- Requires estrogen
Pubarche/adrenarche (pubic hair development)
-Normal ovarian develop
-FSH 个个
1-Amenorrhoea (10, rarely20)
2-Short stature
🔹
- Requires androgens
Menarche
Requires:
3-Failure of sec. sex. Develop
-It may resolve spontaneously -GnRH from the hypothalamus
4- Webbing of the neck
-If hot flushes--> Rx. With estrogen -FSH and LH from the pituitary
5- high carrying angle
-Estrogen and progesterone from the ovaries
6- Shield chest
4. PREMATURE MENOPAUSE: Ovarian failure.. - Normal outflow tract
7- Coartution of aorta
due to:
8- Renal collecting syst. defect
i- Auto-immune dis. (associated with Addison's dis.??)
9-Streak ovaries present
ii-Viral infection (e.g. mumps)
19-Gonadotrophins high
iii- Cytotoxic drugs
11- low Estrgoens

🔹
Classification of amenorrhea
5. PCOS:
12- Mosaic Chrom. Pattern
Amenorrhea
🔹
-Mostly present with classical Stein-Leventhal
syndrome (of oligomenorrhoea, obesity, hirsuitism, and infertility)
(e.g. XO/XX)--> lead to various degrees of hypothalamic amenorrhea

🔹
gonadal dysgenesis and pituitary amenorrhea
-However a substantial group will have sec-amenorrhoea with no

🔹
sec. amen. + premature menopause
obesity or hirsuitism
--> If Y-Chrom is present in the genotype--
ovarian amenorrhea
-Diagnosis is made by finding incraased LH/FSH ratio uterine amenorrhea
> risk of gonadal malig. makes
-Confirmation is made by laparoscopy.
-USS 土 gonadectomy advisable



Anatomic abnormalities of the reproductive
tract
🔷 CRYPTOMENORRHOEA:
vaginal atresia or imperforate hymen prevent menstrual
loss from escaping.
FEATURES:
prim.Amenohea in a teenage girl with normal sexual development present
complaining of:
i - Intermittent lower abd. pain
ii- Possible difficulty of mict.
iii- Palpable lower abd. swelling (Haematometra)
iv- Bulging, bluish membrane at lowerend of vagina (Haematocolpus)
MANAGEMENT: Incise membrane

🔷 Asherman syndrome
asherman's syndrome: Sec. amenorrhoea following distruction of the endomet. by overzealous curttage -->
hypothalamic amenorrhea
- Psychological stress
multiple synechiae show up hysterography -5a-Reductase deficiency
MANAGEMENT: - Anorexia nervosa, weight loss
Under G.A. breakdown intraut. Adhesions through -Increased exercise levels

🔷
hysteroscope -> insert an UCD to deter reformation ->hormone therapy(E2+P) -Kallmann syndrome
INFECTION -drug-induced amenorrhea
e.g. Tuberculosis. Ut. Schistosomiasis - Space-occupying lesion of CNS

🔷Mayer-Rokitansky-Kuster-Hauser Syndrome pituitary amenorrhea
-tumor
(utero-vaginal agenesis) -Empty sella syndrome
-15% of primaryamenorrhea -Sheehan syndrome
-Normal secondary development & extemal female genitalia
-Normal female range testosterone level Etiology ovarian amenorrhea
-Absent uterus and upper vagina & normal ovaries - Gonadal dysgenesis
-Karyotype 46-XX -Turner syndrome: low hair line, web neck, shield
-15~30% renal, skeletal and middle ear anomalies chest, and widely spaced nipples
-Swyer syndrome

🔷 Androgen Insensitivity (Testicular Feminization)
-resistant ovary syndrome
- Premature ovarian failure
-Normal breasts but no sexual hair DISORDERS OF THE OVARIES
-Normal looking female external genitalia uterine amenorrhea
-Absent uterus and upper vagina -Absence ofuterus
-Karyotype 46, Xy -Asherman syndrome
-Male range testosterone level anatomic abnormalities of the

🔹
-Treatment: gonadectomy after puberty + HRT
Phenotype is woman.
- Growth and developare normal (maybe taller than average).
reproductive tract
- Imperforate Hymen

-Breasts are large but with sparse glandular tissue and pale areola
-Scanty, or no axillaryand pubic hair
- Labia minora underdeveloped
-Blind vagina, absent uterus, rudimentary fallopian tubes

🔹
- Inguinal hernia in 50% of cases
Genotype is man (Karyotype 46, XY)
- Testes are present.
- Testes> in abd. or inguinal canal
- Inherited by an X-linked recessive gene…(familial) Resulting in absence of cytosol androgen
by fatema okoff
receptor
- Normal levels of testosterone are produced.. But no response to androgens (endog. or exogen)
- No spermatogenesis
- There is increase incidence of testicular neoplasia (50%)


🔹
Diagnosis:

🔹 With inguinal hernia

🔹 With 10 amenorrhea and absent uterus
When bodyhair is absent

🔹
MANAGEMENT:

🔹 These patients are female.
The gonads must be removed after puberty
then HRT started


Disorders Of Hypothalamus
-Commonest reason for hypogonadotrophic sec. amenorrhoea pituitary amenorrhea
-Often associated with stress e.g. in migrants, young women when leave home,
university students 🌟1. Pituitary Tumor causing "Hyperprolactinemia"
=40% of women with hyperprolactinemia will have a pituitary adenoma
-Diagnosis byexclusion of pituitary lesions.
-Hormone therapy or ovulation induction is not indicated unless patient wishes to Pit. Fossa X-ray is necessary in all cases of amenorrhoea-particular
become pregnant 20.

🔷A loss
FEATURES:
weight loss associated amenorrhea
of> 10 kg is frequently associated with amenorrhoea 🔹
In coned view:

🔹 Erosion of clinoid process
i- In young women and teen ages girls become obsessed
with their body image and starve themselves." 🔹 Enlarge of pituitary fossa
Double flooring of fossa

🔹
ii- Jogger's amenorrhoea: If any of above features seen CTsan or MRI + Assessment of visual fields
This is seen frequently in women training for marathon
racing, in ballet dancers and other form of athletes. 🔹MANAGEMENT:
Bromocriptine (Dopamine agonist)
-Suppres prolactin sec.
•CAUSES:
-redistribution between proportion of body fat mass and body muscle mass. -Correct estrogen deficiency
-Maybe also mediated by exercise related changes in B-endorphins -Permits ovulation
iii- Anorexia Nervosa
Associated with sec. amenorrhoea(misnomer--> no loss of appetite) 🔹
-decrease Size of most prolactinomas
Surgical removal of tumor

🔷
- if extracellar manifestation (e.g. press. on optic chiasma)or if patient cannot tolerate or
Amenorrhoea And Anosmia: respond to medical RX.
rare cause of amenorrhoea of hypogonadotrophic - hypo-gonadism

🔷
(Counterpart in males is Kallman's syndrome)
Post-pill Amenorrhoea:
🌟
🔹 2. OTHER CAUSE OF INCREASED PROLACT.
Drugs: e.g. phenothiazines, methyl-dopa, metclopramide, anti- histamines, oesttogens
-There is no evidence that Est-prog. Contraceptive pills predispose to
🌟
and morphine.
amenorrhoea.. once pill taking is ceased.
-An irregular men. cycle frequently precedes pill taking 3.CRANIOPHARYNGIOMA
Other intracranial tumor
-If this assumption of amenorrhoea being merely an after-effect of pill
taking many cases of hyperprolactinemia will be missed (1:5) 🌟
🔹 4.SHEEHAN's SYNDROME
Necrosis of ant.pituitary due to severe PPH

🔹 It is rare problem today due to better obstetric care and adequate blood transfusion
-And Premat. ovarian failure will be missed in 1:10 cases - Pan -or partial hypopituitarism
-Once other causes are excluded, this type of ameno. Responds well to ovulation
induction with Clomiphene citrate if preg. is desired

Connected book
 image
Barbara L. Hoffman, John O. Schorge, Karen D. Bradshaw, Lisa M. Halvorson, Joseph I. Schaffer, Marlene M. Corton Williams Gynecology, Fourth Edition
Publisher: 2020 ISBN: 9781260456875 Edition: Unknown

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Uploaded on
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