Hormone Replacement Therapy Dr Belinda Magnus. Menopause - Background Vasomotor symptoms affect...
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Hormone Replacement TherapyDr Belinda Magnus
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Menopause - Background Vasomotor symptoms affect around 80%
women during the menopause – severe in 20%
Median symptom duration 4 years – up to 12 years in 10%.
NB Diagnosis is usually clinical based on typical symptoms - 1yr amenorrhoea > 50yo, 2 yrs < 50yo
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HRT – Indications for Use For women with premature/ early
menopause (<40yo or <45yo respectively) until the age of natural menopause – around 51yo
For treating menopausal symptoms where risk:benefit ratio is favourable in FULLY INFORMED women
Do not start in women over 60yo
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Benefits of HRT MOST EFFECTIVE RX AT REDUCING
VASOMOTOR SYMPTOMS – within 4/52, maximum improvement by 3mo, improves sleep & mood
Also: Improves urogenital symptoms (sexual function/ recurrent UTIs); reduces osteoporosis risk; can reduce incidence of CHD if started within 10 years of menopause (controversial – see risks); possibly reduced risk colorectal ca with combined HRT.
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Risks of HRT (1) RISK-FREE until age of natural
menopause VTE: low in healthy women under 60yo.
Over 60yo – risks much higher, esp if obese/ smoking/ previous VTE.
Stroke: Not increased in women under 60yo. Lower risk with transdermal oestrogens; effect may be dose-related.
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Risks of HRT (2) Breast cancer: still contentious No increased risk with oestrogen-only up to 5
yrs Combined HRT ↑ risk but greatest over 60yo Generally, absolute risk increase is small –
approx 1 extra case of breast ca per 1000 women/ annum – similar to risk with obesity/ nulliparity/ late menopause/ drinking 2-3 units of alcohol per day
Risk returns to non-user within 5 yrs of stopping Combined HRT also increases breast density and
risk of abnormal mammogram – important
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Risks of HRT (3) Endometrial ca: Oestrogen-only in
women with uterus – so not given Ovarian ca – conflicting evidence,
possibly increased risk but the only RCT on this concluded no increased risk
CHD: Increased risk in woman starting this over 60yo
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Contraindications to HRT Undiagnosed abnormal vaginal bleeding VTE Active or recent angina/ MI Suspected/ current/ past breast ca Endometrial ca or other oestrogen-dependent
ca Active liver disease with abnormal LFTs Uncontrolled HTN Pregnancy or breastfeeding If women want it – refer for specialist advice
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Starting HRT (1) ↓ ↓ Uterus Hysterectomy (total) ↓ ↓ ↓ Periods? Postmenopausal? Oestrogen ↓ ↓ Cyclic HRT Continuous combined HRT
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Starting HRT (2)
If subtotal hysterectomy – 3mo cyclic HRT + if withdrawal bleed = uterine tissue → continuous combined, if no withdrawal bleed → oestrogen alone
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Monitoring HRT (1) F/U 3mo initially after starting - BP, weight, symptoms,
bleeding Erratic bleeding common in first 3-6mo – if persisting
afterwards, needs further inv Monthly cyclic preparations should produce regular,
predictable bleeds towards the end/ soon after progestogen phase
If bleeding heavy/ irregular on cyclic HRT, can double progesterone dose or ↑ duration to 21 days
Progesterone SE (eg: fluid retention/ weight gain/ mood swings) can halve progesterone dose or ↓ duration to 7-10 days
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Monitoring/ Stopping HRT (2) Reassess at least annually Can consider FSH if previously normal if
symptom-free for 1-2 years to consider stopping
If stopping – can decrease dose first if on high dose to try and minimise Sx
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Alternative Forms of HRT Oral most common Non-oral (eg: patches/ gels) avoid 1st-pass
metabolism through the liver so are more suitable for eg: nausea/ liver disease/ malabsorption/ thrombosis/ enzyme-inducing drugs
HRT is NOT a contraceptive – <50yo and risk-free can use COCP for contraception + relief of menopausal Sx, no COCP if >50yo.
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Alternatives to HRT (1) Vaginal atrophy/ urogenital symptoms –
topical oestrogen first-line eg: tablet/ cream/ pessary/ vaginal ring
Mirena licensed as alternative for endometrial protection (4 years) with oestrogen component if get SE with other progestogens/ contraception still needed/ persistent bleeding on cyclical HRT + normal inv
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Alternatives to HRT (2) Tibolone: good for libido, less good than
HRT for flushing; no need for cyclical progestogen; can use with uterus but only post-menopause; may increase risk breast/ endometrial ca + stroke; not to use in >60yo due to stroke risk
Clonidine: for flushing only; can cause hypotension; causes severe dry mouth; have to wean down to stop.
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Case 1 45yo woman – early menopause Severe flushing, not sleeping well, high-
powered job in City and needs to be alert, works long hours.
Has read on internet and worried ++ about HRT risks – grandmother had breast cancer age 70yo
What do you counsel her?
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Case 2 53yo woman – menopause started age
51 Severe flushing, night sweats, irritability. What other questions to ask? What decides if she can have HRT?
What risks do you have to tell her about?
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Case 3 60yo woman – been on HRT since 53yo for
severe flushing + other vasomotor symptoms ‘I can’t possibly come off HRT, my symptoms
were so bad before.’ High chol, HTN (well controlled) Taking Ellest duet Conti How do you counsel her and what are the
options? What if her symptoms were mainly vaginal
dryness during sex/ recurrent UTIs?
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THE ENDAny Questions?