1 Contraceptives Flashcards
(55 cards)
MOA of combined oral contraceptives
Suppression of ovulation; cervical mucus thickening; endometrial thinning
0.1-0.3% per 100 women years
Failure rate of COC
Reasons for failure rate of COC
Poor compliance, reduced absorption, increased metabolism
Reduced incidence of these things on COC
Carcinoma of ovary, carcinoma of endometrium, benign breast disease, benign ovarian cysts, fibroids, ectopic pregnancy, pelvic infection.
Side effects of COC
Weight gain, acne, not good for bones in long term use.
Increase in VTE risk on COC
3-4x (but normal risk only 7 in 100,000)
Lamotrigine
The levels of this are reduced by the CHC, so, in the pill free week the symptoms worsen and fit control worsens. Sodium valproate is okay to use.
Levonelle
Levonorgestrel
ellaOne
Ulipristal acetate. Selective progesterone receptor modulator
After levonelle, need to use condoms for…
2 days for POP
7 days for COC
9 days Qlaira
After ellaOne, need to use condoms for…
9 days for POP
14 days for CHC
16 days Qlaira
After emergency contraception do not use (2)
IUS or dianette
Copper coil MOA
Inhibits fertilisation due to direct toxicity.
<1%
Failure rate of copper coil
300mm2, preferably 380mm2
How much copper should be in the copper coil if using it for long term use
The Fraser guidelines
1 understands the advice 2 cannot be persuaded to inform rents 3 likely to online having UPSI 4 if she does not receive treatment her physical/mental health will suffer 5 in is in her best interests
20%
Percentage of women who become amenorrhoeic on cerazette
DMPA
Depot medoxyprogesterone acetate injection. Aqueous suspension 150mg/ml given every 12 weeks. Most common
NET EN
Norethisterone Oenanthate, known as noristerat. Oily 200mg given every 8 weeks. Rarely used
Guidance for DMPA use
In adolenscense, use only 1st line if other methods unsuitable or unacceptable. All women re-evaluate risks/benefits at 2 years. in women with lifestyle and/or medical risk factors for osteoporosis consider other methods
Norplant
Subdermal implant in 1993, no longer available
Implanon
Subdermal implant from 1999.
Nexplanon
Almost 100% effect implant.
Mirena
Levonorgestrel Intra Uterine System