Menstrual Disorders Flashcards
Name 2 gonadotrohpic hormones.
LH and FSH
Name 2 ovarian hormones.
Oestrogen and progesterone
What cells make oestrogen?
Granulosa cells
What does FSH stimulate?
Ovarian follicle development and the production of oestrogen by granulosa cells
What inhibits FSH production?
Raising oestrogen and inhibin by dominant follicles
What do declining FSH levels cause?
Atresia of all but dominant follicle
When does ovulation occur (in relation to LH surge)?
Ovulation occurs after the LH surge
What happens in ovulation?
The dominant follicle ruptures and releases oocyte
What does the luteal phase involve the formation of?
Corpus luteum
What hormones is produced in the luteal phase?
Progesterone
When does luteolysis occur?
14 days post ovulation
On what day of ovulation does your period usually start?
14 (when luteolysis occurs)
What happens to the endometrium in the proliferative phase?
There is oestrogen-induced growth of endometrial glands and stroma
Describe the luteal phase of the menstrual cycle.
- Progesterone-induced glandular secretory activity.
- Decidualisation in LATE SECRETORY phase.
- Endometrial apoptosis and subsequent menstruation.
What happens to the endometrium during menstruation?
There is arteriolar constriction, and shedding of the functional endometrial layer
What inhibits scar tissue formation during menstruation\?
Fibrinolysis
How long does menstrual loss usually last?
4-6 days
When does menstrual flow peak?
Days 1-2
What volume of blood is lost per menstruation?
<80ml.
What is abnormal in terms of bleeding?
Clots and flooding
How long does a menstrual cycle usually last?
28 days +/- 7 days
Postcoital bleeding is ________
abnormal
What is menorrhagia?
Prolonged and increased menstrual flow
The causes of menorrhagia can be organic or non-organic
TRUE
Organic causes
There is pathology
Non-organic causes
No pathology
What is 50% of all cases of non-organic causes of menorrhagia?
Dysfunctional uterine bleeding
Describe what you would see on a transvaginal USS of someone with endometriosis.
- Red or black spots.
- Blood can’t escape, and causes an inflammatory reaction.
- CHOCOLATE CYSTS!!!
What is a fibrinoid?
Benign tumour of the myometrium which results in the uterus being much larger than normal
Don’t usually cause pain, but do result in painful periods
What is adenomyosis?
Where there is endometrium present in the muscle of the uterus
Bleeding around this tissue each month causes a lot of pain.
Describe endometrial hyperplasia.
Excessive proliferation which can go on to cause endometrial carcinoma.
Where can endometriosis occur?
Anywhere in the peritoneal cavity, outside the uterus
What do tumours of granulosa cells produce?
Oestrogen
List local causes of organic menorrhagia.
- Fibrinoid
- Adenomyosis
- Endocervical/endometrial polyp
- Cervical eversion
- Endometrial hyperplasia
- IUCD
- PID
- Endometriosis
- Malignancy of cervix or uterus
- Trauma
Name 4 endocrine disorders which can cause organic menorrhagia.
Hyper/hypothyroidism.
Diabetes mellitus.
Adrenal disease.
Prolactin disorders
What drugs can cause menorrhagia?
Anticoagulants
What proportion of women with abnormal uterine bleeding have DUB?
50%
How is the diagnosis of DUB made?
By exclusion
DUB can be divided into 2 groups. What are these?
Anovulatory + Ovulatory
What percentage of DUB is anovulatory?
85%.
When does anovulatory DUB occur?
At extremes of reproductive life
What is the cycle like in ‘anovulatory DUB’?
Irregular
Who gets anovulatroy DUB?
Obese women
Who gets ovulatory DUB?
Women aged 35-45 years.
What does ovulatory DUB occur due to?
Inadequate progesterone production by the corpus luteum
Why is TSH level checked when investigating DUB?
To exclude hyperthyroidism which is associated with amenorrhoea
When should you do a transvaginal USS?
If you suspect a pelvic mass
What can a transvaginal USS be used for?
Measuring endometrial thickness (to exclude endometrial carcinoma).
To identify the presence of fibroids and other pelvic masses.
What are the 3 forms of endometrial sampling?
- Pipelle biopsies
- Hysteroscopic directed
- Dilatation and curettage (D+C)
Give examples of medical treatments of DUB.
- Progestogens
- Combined oral contraceptive pill
- Danazol
- GnRH analogues
- Non-steroidal anti-inflammatory drugs (NSAIDs)
- Anti-fibrinolytics
- Capillary wall stabilisers
What is the best drug to use in the treatment of DUB?
Tranexamic acid
Outline the 1st and 2nd line in the treatment of DUB.
1st line: mirena IUS. 2nd line: Non-hormonal meds e.g. tranexamic acid, NSAIDs. Hormonal meds e.g. COC, POP.
What are the 2 surgical options in the management of DUB?
Endometrial resection/ablation.
Hysterectomy
Endometrial ablation should be offered first, rather than a hysterectomy
TRUE