Contraception Flashcards
Name types of contraception (21)
Traditional
- rhythm method
- coitus interruptus
- abstinence
Barrier/mechanical
→ short acting (need to be used more than Once per month)
- male condoms
- female condoms
- diaphragm
- cervical cap
- cervical sponge
- spermicides (nonoxynol 9 )
Hormonal
→ short acting
- Oral (pop/COCP)
- vaginal ring: Nuva
- transdermal patch: EVRA
→ long acting
- injectable (progesterone only/newer combined)
- progestogen vaginal ring : PVR
- intrauterine: IUCD - copper, progestogen
- subdermal Implants
post coital/emergency contraception
- single high dose progestogen
- Copper IUD
- coc 2 double high doses 12 hours apart + antiemetic
Irreversible
→ female
- fallopian tube ligation: laparoscopic / laparotomy / with C section
> tie and cut eg parkland technique
> elastic band tie
> close with metal tip
> cauterise
> remove
→ male
- vasectomy (additional contraception up to 4 months after until male proven azoospermic)
Name 3 advantages male condoms
- Inexpensive
- easily available for immediate use
- reduce transmission HIV + STI
- easy to use
Name 5 disadvantages male condoms
- Failure rate 2-15%, Additional contraception recommended
- female must negotiate use
- slippage
- allergy, especially latex (polyurethane more expensive)
- loss of sensation
Name advantages female condoms
How work?
Protective against HIV, STI; female controlled
Pouch lines vagina. Internal ring covers cervix ; outer ring outside vagina, covers perineum.
Made of polyurethane
Name disadvantages female condoms
- Not properly used - difficult/ unmotivated
- high failure rate
Name 3 advantages diaphragm contraception
- safe, with or without spermicides (improve efficacy)
- reduce risk STI, tubal infertility
- different sizes, arcing easier
- affordable, reusable, female controlled
Name 4 disadvantages diaphragm contraception
- Vaginal irritation
- UTI, not protect against STI
- abrasions
- must insert 6 hours before sex and leave in till 6 hours after, high failing rate 16 %
Name 2 advantages cervical cap contraception
- Can be left in place up to 48 hours
- no need for spermicide (but increase efficacy)
- affordable, reusable, female controlled
Name 4 disadvantages cervical cap contraception
- efficacy depends on placement
- less effective in parous women
- offensive vaginal discharge
- must be left in for 8 hours after sex. Must make sure cap is over cervix after sex. High failure rate
Name advantages cervical sponge contraception. How work?
Lower STI infection rates.
Sustained release system for spermicide. Absorbs semen. Blocks entry to cervical canal.
Name 2 disadvantages cervical sponge contraception
- Must insert before 6 and leave in for 6 hours after
- possibly increase HIV transmission risk due to vaginal mucosal damage + irritation
Name 8 indications / benefits hormonal contraception
- Contraception
- reduce menstrual disorders
- reduce functional ovarian cysts and cancer
- reduce endometrial cancer
- reduce ectopic occurrence
- reduce benign breast disease
- protect against PID
- reduce rheumatoid arthritis
Name 6 contraindications hormonal contraception
- Pregnancy
- undiagnosed genital tract bleed
- increased risk vTE
- increased risk CVD
- liver disease
- estrogen dependent tumour (breast)
Name 2 progestogen only pills
- Micro-novum (norethisterone 35 mcg)
- microval (levonorgestrel 30 mcg)
Name advantages progestogen only pills
- Safe post partum and in breadfeeding
- menstrual volume reduced
- indicated when oestrogen contraindicated
Name 2 disadvantages progestogen only pills
- Must be meticulous pill taker, no more than 3h delay daily dose
- higher failure rate, doesn’t prevent ovulation reliably
- commonly irregular light bleeding because doesn’t control cycle
Contraindications: increased grade cardiovascular and liver disease
How classify combined oral contraceptives?
- Phases: mono ( all pills identical ) /bi/triphasic
- dose: low /ultra low with placebo
- type of estrogen and progestogen
Name 3 types oestrogen used in combined oral contraceptives
- Mestranol
- ethinyl estradiol!
- estradiol valerate
Name and describe 6 types progestogens used in combined oral contraceptives
- Norethisterone : low potency, not androgenic.
- levonorgestrel: more potent, more androgenic (nordette), lowest risk Vte
- desogestrol: more estrogenic, less androgenic
- gestodene: as above (femodene)
- cyproterone acetate: anti androgenic (Diane 35)
- drosperinone: anti androgenic, analogue spironolactone (Yasmin)
How start combined oral contraceptives? (4)
Quick start method
Start immediately with no pregnancy test if
- first day LMP < 5 days ago
Start immediately after negative pregnancy test if
- LMP started >5 days ago, no unprotected intercourse since then
- LMP started > 5 days ago and unprotected intercourse > 5 days ago (also do home pregnancy test 2 weeks after starting pills)
Start next day after emergency contraception today if
- LMP started >5 days ago and unprotected sex 5 days or less ago (also do home pregnancy test 2 weeks after starting pills)
- must use backup contraception for first 7 days
Name 2 injectables and contents
- depot provera DMPA (medroxy progesterone acetate) 150 mg q 12 weekly IM
- nur - isterate (norethisterone enanthate ) 200 mg q 8 weekly IM
Name 5 advantages depo provera injectable progestogen
- Minimal effort
- very effective, failure rate 0-1 /100 women
- same advantages as coCp
- protect against PID
- treat endometriosis
Name 4 disadvantages depo provera injectable progestogen
- Irregular bleeding
- average 6 - 10 months delay return to fertility
- weight gain, headache
- decrease BMD with longer duration use
- need to visit clinic regularly: can lead to non- compliance
Name 4 disadvantages nur-isterate injectable progestogen
- More androgen than depo
- more weight gain
- more acne
- 7 months average return to fertility
Name 3 types intrauterine contraceptive devices
- Copper T
- Mirena, kyleena (levenorgestrol)
Name 5 advantages intrauterine contraceptive devices
- Fit and forget
- very safe and effective
- very good continuation rates
- failure rate copper T 0,6 - 0,8%; Mirena 0,1%
- copper T last up to 10 years, Mirena 5 years