Management of the menopause Flashcards
Define menopause
Cessation of menstruation
What is the normal age of menopause?
45-55 yrs (av. 51 yrs)
When would you diagnose the menopause?
after 12 months of amenorrhoea
What exception to the rule is there when defining menopause?
When a woman has had a hysterectomy without oopherectomy, her periods will stop,. but she is not in menopause
What are the symptoms of perimenopause?
irregular periods
hot flushes
mood swings
urogenital symptoms
What does the hypothalamus produce in the HPA?
GnRH - gonadotrophin releasing hormone
How is GnRH released from the hypothalamus?
Pulsatile manner
What does GnRH do?
causes the anterior pituitary gland to produce LH and FSH
What happens to LH and FSH levels in the menopause and why?
increase - this is because the ovaries are not producing oestrogen due to lack of follicles and so the hypothalamus keeps stimulating the anterior pituitary gland to produce LH and FSH
What does oestrogen due to LH and FSH levels?
Reduces them by inhibiting the anterior pituitary
What do LH and FSH do?
Cause the ovary to produce oestrogen
What are the main categories of symptoms of the menopause?
Vasomotor MSK Urogenital symptoms Low mood Sexual difficulties - reduced libido
What are the vasomotor symptoms of the menopause?
Hot flushes
Night sweats
What are the MSK symptoms of the menopause?
Joint pain
Muscle aches
What are the urogenital symptoms of the menopause?
Vaginal dryness Vulval itching Dyspareunia recurrent UTIs PMB
What are the short term symptoms of the menopause?
loss of memory concentration headaches dry and itchy skin joint pains loss of confidence lack of energy mood change/irritability
What are the medium term symptoms of the menopause?
Urogenital atrophy causing:
- Dyspareunia
- Recurrent UTIs
- PMB
also atrophy of pelvic floor muscles causes incontinence and prolapse
Why does urogenital atrophy occur?
the urogenital tract is lined by an epithelium that has oestrogen receptors in it
What are the long term impacts of the menopause?
Osteoporosis
Cardiovascular disease - increased lipid levels
Dementia
When should we start treatment to reduce the risk of the long term effects of the menopause?
At the time of the menopause
What are the risks of taking HRT?
Stroke
Thrombosis
Breast cancer
What are the benefits of HRT in the long term other than symptom control?
bone mineral density protection
potentially reduced risk of heart disease but hypothesised only to protect against heart disease if given early in the menopause, as HRT has also been shown to increase the risk of heart disease
How would you manage the menopause?
- holistic approach
- lifestyle advice - lose weight, stop smoking, reduce alcohol, reduce caffeine - as these make symptoms better and reduce risk of breast cancer
- HRT
- vaginal oestrogen creams
- non-hormonal - Clonidine for hot flushes
- Venlafaxine and other antidepressants
- CBT
How do oestrogen only and oestrogen and progesterone preparations of HRT compare in their risk of breast cancer?
Oestrogen only - no increased risk of breast cancer, but oestrogen on its own without progesterone increases risk of endometrial cancer, so would only give to women who have already had a hysterectomy
Oestrogen and Progesterone - increased risk of breast cancer
What would you do if a women on HRT develops breast cancer?
Stop HRT
Would you prescribe HRT to a woman with history of breast cancer?
Not routinely
What are the types of HRT and how do they relate to risk of VTE?
- oral - increased risk of VTE
- transdermal - no increased risk of VTE, unless BMI >30
- vaginal pessary or cream
- Skin Gel
What is the difference between continuous and sequential HRT?
sequential HRT usually given in the perimenopausal symptoms to prevent irregular bleeding, as the sequential one gives you a predictable bleed every 4 weeks - has oestrogen only for 16 days and then oestrogen and progesterone for 12 days
Continuous combined HRT which does not cause bleeding if given after 12 months of amenorrhoea and has oestrogen and progesterone throughout - the advantage is that it is bleed free
How can a Mirena coil be used as HRT?
The Mirena can be used as the progestogen component of HRT and then can give oestrogen on top to act as a continuous combined HRT
What does Tibolone contain?
Androgenic
Oestrogenic
Progestrogenic functions/properties
given on a daily basis so equivalent of continuous combined HRT
How often would you change a mirena when using it as HRT?
every 4 years (usually would change every 5 years when used as contraception)
What dictates the dose you use?
Symptomatic relief - aim for lowest effective dose
Who should have transdermal HRT?
malabsorption eg chron's migraines, epilepsy - due to steady release increased risk of VTE older women medical conditions eg hypertension patient choice
Define premature ovarian insufficiency
menopause < 40 yrs
What are the causes of premature ovarian insufficiency?
- idiopathic
- natural - chromosomal abnormalities, gene abnormalities, autoimmune
- iatrogenic - surgery, chemo, radiotherapy
How would you diagnose primary ovarian insufficency?
FSH >25IU/l – 2 samples >4 weeks apart
AND
4 months of amenorrhoea
What is the recommended guidance on HRT for pts who have primary ovarian insufficiency?
To take HRT until at least the age of average menopause
To reduce risk of:
- early onset cardiovascular disease
- osteoporosis
- early onset cognitive decline
Fertility stops immediately when menopause starts. T or F?
FALSE!
If menopause starts <50 years, then fertile for 2 years after start of menopause
If menopause starts >50 years, then fertile for 1 year after start of menopause
Which is the most effective treatment of symptoms of the menopause?
HRT
What are the non-hormonal methods of treating the menopause?
Clonidine
antidepressants eg venlafaxine
antiepileptics eg gabapentin
What is clonidine’s mechanism of action?
Alpha adrenergic receptor agonist- reduces vasodilation
Which drugs should not be given to pts who are on tamoxifen and why?
Paroxetine
Fluoxetine
Sertraline
as these are CYP450 inducers so make tamoxifen less effective
What are the contraindications for HRT?
undiagnosed abnormal vaginal bleeding
breast lump
acute liver disease
What are the cautions for HRT?
Migraines Over age of 60 - as HRT increases risk of cardiovascular disease if started over 60 uncontrolled BP endometriosis VTE family history Fibroids
What is the difference between primary ovarian insufficiency and early menopause?
POI = menopause before 40
early menopause = menopause between 40-45
What are the risk factors for early menopause?
smoking menarche parity previous oral contraceptive history BMI ethnicity family history
What is the pathophysiology of the menopause?
the follicles become depleted
Would you routinely do investigations for diagnosis of the menopause?
No
Just use clinical symptoms if the pt is around the age of a normal menopause ie over 45
When would you use FSH levels to diagnose the menopause?
- when the woman is using contraception
- when aged 40-45 years to diagnose early menopause
- when aged under 40 and POI is suspected
do 2 levels 4 weeks apart
What investigations would you do to exclude other diseases in the menopause?
TFT
- to differentiate thyroid disease symptoms from menopausal symptoms.
Blood glucose
- may be considered in some women, as diabetes can cause similar symptoms.
A pelvic scan
- may be considered for those women with atypical symptoms.