Contraception Flashcards
What is the combined oral contraceptive pill?
Combination of synthetic progesterone and Ethinyl Estradiol
Describe the regime of the combined oral contraceptive pill
Taken for daily for 21 days with a pill free week
Or can use for 3 months continuously and then pill free week
Takes 7 days to switch off ovaries
What is the mode of action of the combined oral contraceptive?
Inhibits ovulation
What is the dose of the combined oral contraceptive?
20-35mg or 50 if on liver inducers
Give benefits of the combined oral contraceptive pill
Regular bleed with potential reduction in pain
Reduction in functional ovarian cysts
Stops ovulation
50% reduction in ovarian and endometrial cancer
Improvement in acne/hirsutism
Reduction in benign breast disease, RA, colon cancer and osteoporosis
Give complications of the combined oral contraceptive pill
Breast tenderness
Nausea
Headache
Irregular bleeding for first 3 months
Mood change
Weight gain
VTE
MI/Stroke
Breast cancer
Give contrandications of the combined oral contraceptive pill (and other combined contraception)
BMI>35
Smoker>35
Previous VTE
Migraine with aura
Breast feeding
Wheelchair use
What advice is given if a dose of the oral contraceptive pill is missed?
If 1 pill missed, at any time in cycle
- Take two pills in a day and then continue normal regime
If 2 or more pills missed
- Take two pills in a day, leaving earlier missed pills and continue normal regime
- If days 1-7, emergency contraception considered if uprotected sex in pill free interval or week 1
- If days 8-14, no need for emergency contraception if 7 consecutive days of taking pill
- If days 15-21, finish pills in current pack and start next pack immediately
how long should patients stop the cocp before surgery?
4 weeks before
How often does the patch have to be changed?
Wear one patch a week for three weeks and do not wear a patch on week 4
What action is required if there is delayed patch change?
If over 48 hours, use barrier protectionf or 7 days and emergency contraception if required
How often is the vaginal ring changed?
Changed every 3 weeks, can take out for 3 hours in 24 hours so many take out for intercourse
Describe the regime of the progestogen only pill
Same time every day, without pill free interval (effect lost if more than 3 hours late)
What is the mode of action of the progestogen only pill?
Thickening of cervical mucus
(Desogestrel’s main method is inhibiting ovulation)
Give benefits of the progestogen only pill
Amenorrhoea
Useful for those contraindicated using combined pill
Give complications of the progestogen only pill
Irregular bleeding, most common adverse effect
>Appetite
Hair loss/gain
Mood change
Bloating/fluid retention
Headache
Acne
Erratic bleeding
Give contraindications of the progestogen only pill
Severe liver disease
Current VTE
Hormone dependent tumour
What is the dose of Depo-Povera/injectable progestogen?
150mg IM to upper quadrant of buttock
What is depo-provera?
An aqueous solution of crystals of the progestogen depomedroxyprogesterone acetate
How often do women have to get depo-provera?
Every 12 weeks
What is the mode of action of depo-provera?
Inhibits ovulation
Give benefits of depo-provera
Good for forgetful pill takers
70% women amenorrhoeic after 3 doses
Estrogen free so few contraindications
Give complications of depo-provera
Delay in return to fertility
Reversible reduction in bone density
Problematic bleeding
Weight gain
Not suitable in women over 50
What is the subdermal impant?
Progestogen etonogestrel in a matrix of ethinylvinylacetate (EVA)
How long does the implant last?
3 years
What is the mode of action of the implant?
Primary method is inhibition of ovulation, but also thickening of cervical mucus
Give benefits of the implant
Oligomenorrhoea
Give complications of the implant
Irregular menstrual bleeding, main complication
Mood change
Delayed return to fertility
How long does the copper IUD last?
Lasts 5-10 years depending on the type
What is the mode of action of the copper IUD?
Decrease sperm motility and survival (toxic to sperm and prevent implantation)
Give benefits of the copper IUD
Hormone free, so most suitable for breast cancer patients
Long term
Give complications of the copper IUD
May make periods heavier/crampier
Ectopic pregnancy
Perforation and expulsion
PID
Give contraindications of the copper IUD
Menorrhagia
Copper allergy
Uterine abnormalities
PID
Cervical/endometrial cancer
How long does the hormonal IUS last?
Lasts 3-5 years depending on type
What is the mode of action of the hormonal IUS?
Primary method is preventing endometrial proliferation
Also thickening of cervical mucus
Give benefits of the hormonal IUS
Long term
Oligomenorrhoea/Amenorrhoea
Give complications of the hormonal IUS
Initial irregular bleeding, later followed by light menses or amenorrhoea
Ectopic pregnancy
Perforation and expulsion
PID
Give contraindications of the hormonal IUS
<8-12 weeks after C section
Uterine abnormalities
PID
Cervical/endometrial cancer
What is the mode of action of barrier methods?
Prevents sperm transport
Give benefits of barrier methods
Protects against STI’s
Give complications of barrier methods
Diaphragms and caps require the correct size and fitting
What is a vasectomy?
Permanent division of vas deferens under local anaesthetic
Give compliations of vasectomy
Pain due to sperm granuloma
Irreversible
Requires semen analysis at 3 months to ensure effective
Additional contraception for 2-3 months
Bleeding
What is fertile sterilization?
Fallopian tubes are blocked, usually Filshie clips applied across tube to block tube lumen
Give complicatins of female sterilization
Irreversible
Risks associated with surgery: Pain, bleeding and visceral damage
Ectopic pregnancy
Give contraindications of female sterilization
Uncertainty
>BMI
Comorbidities that contraindicate general anaesthetic
Give the 3 methods of emergency contraception
Copper IUD
Ellaone pill
Levonorgestrel pill
How long after unprotected sex can the copper IUD be used for emergency contraception?
5 days
Or up to 5 days after earliest possible day of ovulation (Take shortest cycle length and subtract 14 to get earliest possible day of ovulation)
How long after unprotected sex can the ellapone pill be used for emergency contraception?
Up to 120 hours (5 days)
How long after unprotected sex can the levonergestrel pill be used or emergency contraception?
72 hours (3 days)
When is the ellaone pill only effective?
Only effective before the release of egg
When is levonergestrel pill only effective?
Before the release of an egg
What is the most effective emergency contraception?
Copper IUD
What is the most effective contraception?
Hormonal IUS
How long after giving birth do women not require contraception?
Up to 21 days
When is lactational amenorrhoea a reliable form of contraception?
Baby is less than 6 months
Amenorrhoeic
Breast feeding exclusively
Describe the management if individual vomits after taking levonorgestrel
If within 3 hours, take another dose
What is the contraception of choice in epileptics?
Injection