Gynaecology Flashcards
What is primary amenorrhoea?
not starting menstruation
When is primary amenorrhoea diagnosed?
by 13 years when there is no other evidence of pubertal development
by 15 years of age where there are other signs of puberty such as breast bud development
What is hypogonadotropic hypogonadism?
deficiency of LH and FSH
What is hypergonadotropic hypogonadism?
lack of response to LH and FSH by the gonads
What can cause hypogonadotropic hypogonadism?
hypopituitarism
damage to the hypothalamus or pituitary (e.g. radiotherapy, surgery)
significant chronic conditions
excessive exercise or dieting
constitutional delay in growth and development
endocrine disorders
Kallman syndrome
What can cause hypergonadotropic hypogonadism?
previous damage to the gonads
congenital absence of ovaries
Turner’s syndrome (XO)
What is Kallman syndrome?
genetic condition causing hypogonadotrophic hypogonadism and anosmia
What causes congenital adrenal hyperplasia?
deficiency of 21-hydroxylase or 11-beta-hydroxlase (rare) enzyme
What are the hormone abnormalities in congenital adrenal hyperplasia?
underproduction of cortisol and aldosterone
overproduction of androgens
How does congenital adrenal hyperplasia present in female patients?
tall for their age
facial hair
primary amenorrhoea
deep voice
early puberty
What is the mode of inheritance of congenital adrenal hyperplasia?
autosomal recessive
What structural pathology can cause primary amenorrhoea?
imperforate hymen
transverse vaginal septae
vaginal agenesis
absent uterus
female genital mutilation
What is the management of primary amenorrhoea with an ovarian cause?
COCP
What is the management of hypogonadotrophic hypogonadism?
fertility = pulsatile GnRH
pregnancy not wanted = COCP
What is secondary amenorrhoea?
no menstruation for more than three months after previous regular menstrual periods
What are the causes of secondary amenorrhoea?
pregnancy (most common)
menopause and premature ovarian failure
hormonal contraception
hypothalamic or pituitary pathology
ovarian causes (e.g. PCOS)
uterine pathology (e.g. Asherman’s syndrome)
thyroid pathology
hyperprolactinaemia
What is the most common cause of hyperprolactinaemia?
pituitary adenoma
What is the treatment for hyperprolactinaemia?
dopamine agonists (e.g. bromocriptine or cabergoline)
What does a high FSH in secondary amenorrhoea suggest?
primary ovarian failure
What does a high LH or LH:FSH ratio in secondary amenorrhoea suggest?
PCOS
What can be done to reduce the risk of osteoporosis when amenorrhoea lasts more than 12 months?
ensure adequate vitamin D and calcium intake
HRT or COCP
When are symptoms of premenstrual syndrome present?
resolve once menstruation begins
not present before menarche, during pregnancy or after menopause
What are the symptoms of PMS?
low mood
anxiety
mood swings
irritability
bloating
fatigue
headaches
breast pain
reduced confidence
cognitive impairment
clumsiness
reduced libido
What are the primary care management options for PMS?
general healthy lifestyle changes
COCP - drospirenone (i.e. Yasmin) first line
SSRIs
CBT
What are the causes of menorrhagia?
dysfunctional uterine bleeding (no identifiable cause)
extremes of reproductive age
fibroids
endometriosis and adenomyosis
PID
contraceptives
anticoagulant medications
bleeding disorders
endocrine disorders
connective tissue disorders
endometrial hyperplasia or cancer
PCOS
What are the key things to ask about in a gynae history?
age at menarche
cycle length, days menstruating and variation
intermenstrual bleeding and post coital bleeding
contraceptive history
sexual history
possible of pregnancy
plans for future pregnancies
cervical screening history
migraines +/- aura
When should outpatient hysteroscopy be arranged for menorrhagia?
suspected submucosal fibroids
suspected endometrial pathology
persistent intermenstrual bleeding
When should pelvic and transvaginal US be arranged for menorrhagia?
possible large fibroids (palpable pelvic mass)
possible adenomyosis (associated pelvic pain or tenderness on examination)
examination is difficult to interpret (e.g. obesity)
hysteroscopy is declined
What is the management of menorrhagia in patients who do not want contraception?
no associated pain = tranexamic acid
associated pain = mefenamic acid
What is the management of menorrhagia in patients that deem contraception acceptable?
first line = mirena coil
second line = COCP
third line = cyclical oral progesterones
What are the secondary care management options for menorrhagia?
endometrial ablation
hysterectomy
What are fibroids/uterine leiomyomas?
benign tumours of the smooth muscle of the uterus
What hormone are fibroids sensitive to?
oestrogen
What are the types of fibroids?
intramural (within the myometrium)
subserosal (just below the outer layer of the uterus)
submucosal (just below the endometrium)
pedunculated (on a stalk)
How can fibroids present?
often asymptomatic
menorrhagia
prolonged menstruation (>7 days)
abdominal pain, worse during menstruation
bloating or feeling full in the abdomen
urinary or bowel symptoms due to pelvic pressure or fullness
deep dyspareunia (pain during intercourse)
reduced fertility
What are the management options for fibroids <3cm?
medical = same as menorrhagia
surgical = endometrial ablation, resection of submucosal fibroids during hysteroscopy, hysterectomy
What are the management options for fibroids >3cm?
gynae referral
medical = same as menorrhagia
surgical = uterine artery embolisation, myomectomy, hysterectomy - GnRH agonists can be used to shrink the size of the fibroid before surgery
Give examples of GnRH agonists
goserelin (Zoladex)
leuprorelin (Prostap)
What are the potential complications of fibroids?
menorrhagia often with iron deficiency anaemia
reduce fertility
pregnancy complications
constipation
urinary outflow obstruction and UTIs
red degeneration of the fibroid
torsion of the fibroid
malignant change to a leiomyosarcoma
What is red degeneration of fibroids?
ischaemia, infarction and necrosis due to disrupted blood supply
When is red degeneration of fibroids most likely to occur?
pregnancy
What is the presentation of red degeneration of fibroids?
severe abdominal pain
low-grade fever
tachycardia
vomiting
What is the management of red degeneration of fibroids?
supportive - rest, fluids, analgesia
What is endometriosis?
condition where there is ectopic endometrial tissue outside the uterus
What is an endometrioma?
lump of endometrial tissue outside the uterus
What are chocolate cysts?
endometriomas in the ovaries
What is adenomyosis?
endometrial tissue within the myometrium of the uterus
How can endometriosis present?
asymptomatic
cyclical abnormal or pelvic pain, urinary or bowel symptoms or bleeding from other sites
deep dyspareunia (pain on deep sexual intercourse)
dysmenorrhoea (painful period)
infertility
What may be found on examination in endometriosis?
endometrial tissue visible in the vagina on speculum examination - particularly in the posterior fornix
fixed cervix on bimanual examination
tenderness in the vagina, cervix and adnexa
What investigations can be done in suspected endometriosis?
pelvic US
laparoscopic surgery with biopsy (gold standard for diagnosis)
What is the ASRM staging system for endometriosis?
stage 1 = small, superficial lesions
stage 2 = mild but deeper lesions than stage 1
stage 3 = deeper lesions, with lesions on the ovaries and mild adhesions
stage 4 = deep and large lesions affecting the ovaries with extensive adhesions
What are the management options for endometriosis?
initial management = establishing a diagnosis, providing a clear explanation, listening to the patient, analgesia prn
hormonal management
surgical options = laparoscopic surgery to excise or ablate the endometrial tissue and remove adhesions (adhesiolysis), hysterectomy
When can menopause be diagnosed?
woman has had no periods for 12 months
What is the average age of menopause?
51 years
What is menopause?
point at which menstruation stops
What is post menopause?
period from 12 months after the final menstrual period onwards
What is perimenopause?
time around menopause when the woman may be experiencing vasomotor symptoms and irregular periods
When does premature menopause occur?
<40 years
What are the sex hormone changes in menopause?
low oestrogen and progesterone
high LH and FSH (due to absence of negative feedback)
What are the perimenopausal symptoms?
hot flushes
emotional lability or low mood
premenstrual syndrome
irregular periods
joint pains
heavier or lighter periods
vaginal dryness and atrophy
reduced libido
What does a lack of oestrogen increase the risk of?
CVS disease and stroke
osteoporosis
pelvic organ prolapse
urinary incontinence
How are perimenopause and menopause diagnosed?
> 45years with typical symptoms
FSH blood test to help with diagnosis in:
<40 years
40-45 with menopausal symptoms or change in the menstrual cycle
For how long should contraception be used after the last menstrual period?
<50 = 2 years
>50 = 1 year
What are the good contraceptive options (UKMEC1) for women approaching the menopause?
barrier methods
mirena or copper coil
progesterone only pill
progesterone implant
progesterone depot injection (<45 years)
sterilisation
How is premature ovarian insufficiency diagnosed?
<40 with typical menopausal symptoms plus elevated FSH on two consecutive samples separated by more than 4 weeks
What are the options for HRT in premature ovarian insufficiency?
HRT
COCP
What can unopposed oestrogen HRT lead to?
endometrial hyperplasia and endometrial cancer
What are the non-hormonal treatment options for menopausal symptoms?
lifestyle changes = improved diet, exercise, weight loss, smoking cessation, reducing alcohol, reducing caffeine, reducing stress
CBT
clonidine
SSRIs
venlafaxine (SNRI)
gabapentin
What is the MOA of clonidine?
agonist of alpha-2 adrenergic receptors and imidazoline receptors in the brain - lowers blood pressure and reduces HR
What is clonidine used for in the menopause?
reducing vasomotor symptoms and hot flushes
What are the common side effects of clonidine?
dry mouth
headaches
dizziness
fatigue
What are the symptoms of sudden withdrawal of clonidine?
rapid increases in blood pressure
agitation
What are the indications for HRT?
replacing hormones in premature ovarian insufficiency, even without symptoms
reducing vasomotor symptoms such as hot flushes and night sweats
improving symptoms such as low mood, decreased libido, poor sleep and joint pain
reducing the risk of osteoporosis in women under 60 years
Under what age do the benefits of HRT outweigh the risks?
60