Contraception Flashcards
What happens if you miss a POP?
> 3hrs late -> take ASAP, continue next pill at usual time (even if 2 pills at once), use barrier until 48hrs of pill-taking
• Or >12hrs late for Cerazette (desogestrel)
What are the side effects of progesterone?
Headache
Nausea
Breast pain
What’s the brand name of the implant?
nexplanon
When can each of the 3 emergency contraceptions be given up until?
Levonorgestrel (Levonelle) up to 72hrs after UPSI (or up to 96hrs but less effective)
Uliprisal (EllaOne) up to 120hrs after UPSI
Copper IUD up to 5d after UPSI or up to 5d after the likely ovulation date
How do the POPs work?
Traditional POPs: Micronor, Noriday, Nogeston, Femulen (i.e. norethisterone / levonorgestrel)
Thicken cervical mucus
Cerazette (desogestrel)
Inhibits ovulation
Also thickens cervical mucus
How soon after starting a POP are you protected?
o Effective immediately if start up to and including day 5 of cycle
o Otherwise use condoms for first 2d
What’s in the COCP?
Ethinylestradiol with a progesterone e.g. levonorgestrel or norethisterone
When does emergency contraception need to be given?
- UPSI w/ no regular contraception
Patch:
- End of week 1 or 2, not changed patch for >48hrs, UPSI in last 5d or during patch-free interval
COCP:
- Missed 2 pills in week 1 and UPSI in pill-free period of week 1
What are 3 UKMEC stage 4 criteria for the COCP?
- > 35yo AND >15cig/day
- Migraine w/ aura
- Hx of VTE or thrombogenic mutation
- Hx of stroke / IHD
- Breast feeding < 6w post-partum
- Uncontrolled HTN
- Current BC
- Major surgery w/ prolonged immobilisation
- Poorly controlled DM diagnosed >20yo
Give 3 disadvantages of the injectable depo provera contraception
o No immediate reversal once given
o Delayed return to fertility (maybe up to 12m)
o Irregular bleeding
o Weight gain
o Not recommended in adolescents as risk of osteoporosis
o UKMEC 3: past breast Ca
o UKMEC 4: current breast Ca
What is in the injectable contraceptive depo provera?
150mg medroxyprogesterone acetate
Which contraceptives thin the endometrium?
Injectable (depo provera)
IUS
What happens if you miss 1 COCP pill?
Take the missed pill, even if means taking 2 pills at once, then continue as normal
How long does the implant nexplanon last?
3yrs
Give 3 disadvantages of the implant nexplanon
o Invasive
o Irregular / heavy bleeding
o Progesterone effects (headache, nausea, breast pain)
o Interaction w/ enzyme-inducing drugs like rifampicin & antiepileptics
o Not licensed for use outside age 18-40yo
o UKMEC 3: IHD, stroke, unexplained/suspicious vaginal bleeding, past breast Ca, severe liver cirrhosis, liver Ca
o UKMEC 4: current breast Ca
Give 3 advantages of the copper coil
o Immediate contraception
o Can be used as emergency contraception
o Can be inserted w/in 48hrs after childbirth
o LARC (5yrs if stem only, 10yrs if stem and on the T arms)
o UKMEC 1 for anticonvulsants
Give 3 advantages of the COCP
o Highly effective (failure rate <1 per 100-woman years)
o Doesn’t interfere w/ sex
o Reversible contraception on stopping
o Periods ~ more regular, lighter, less painful
o Lower risk of ovarian Ca, endometrial Ca, colorectal Ca
o Possibly lower risk of PID, ovarian cysts, benign breast disease, acne vulgaris
Which contraceptive can be given w/in 48hrs of childbirth?
Copper IUD
What are the recommendations regards contraception around the menopause?
- Stop COCP for contraception once 50yo
- Remove IUD 2yrs after amenorrhoea if <50yo, 1yr after if >50yo
Progesterone only methods of any form:
- If amenorrhoeic, check FSH. FSH>30 then stop after 1yr. FSH<30 then stop age 55.
- If not amenorrhoeic, consider investigating abnormal bleeding pattern
What are the common side effects of the COCP?
Headache, nausea, breast tenderness
What’s the dose of levonorgestrel (Lenovelle)?
o 1.5mg single dose (3mg if BMI>26 or weight>70kg)
o Vomit w/in 3hrs -> repeat dose
Which emergency contraceptive pill is best if the pt is asthmatic?
levonorgestrel (Levonelle)
caution w/ Ulipristal (EllaOne)
How does the IUS work?
o Prevents endometrial proliferation
o Also cervical mucous thickening
How soon after having the IUS are you protected?
7d
Give 3 disadvantages of the copper coil
o Heavier, longer, more painful bleeds
o Uterine perforation (0.2%, higher if breastfeeding)
o 1/20 expulsion (most common in first 3m)
o If you get pregnant, more likely to be ectopic
o Small increased risk of PID in first 20d
If someone is already on hormonal contraception, which pill is best to take for emergency contraception if needed and why?
levonorgestrel (Levonelle)
Ulipristal (EllaOne) you have to also use barrier contraception for 5d after taking bc it might decrease the effectiveness of the hormonal contraception
When can the coils be inserted post-partum?
Both the IUS and IUD can be inserted w/in 48hrs of childbirth or after 4w
What are the doses of levonorgestrel for emergency and routine contraception respectively?
Routine = 30mcg
Emergency = 1.5mg
Which contraceptives inhibit implantation?
Levonorgestrel (Levonelle)
Which emergency contraceptive pill is best if the pt is breastfeeding?
levonorgestrel (Levonelle)
delay breastfeeding for 1w after taking Ulipristal (EllaOne)
Prescribe a POP / what do you look up in the BNF?
Look up norethisterone (350mcg), levonorgestrel (30mcg) or desogestrel (75mcg)
Give 3 disadvantages of the IUS
o Barrier use for 7d
o Initial frequent bleeding and spotting
o Uterine perforation (0.2%, higher if breastfeeding)
o 1/20 expulsion (most common in first 3m)
o If you get pregnant, more likely to be ectopic
o Small increased risk of PID in first 20d
How do you prescribe (or look up the prescription in the BNF) a COCP?
Search for “Ethinylestradiol” in the BNF
o You just prescribe ethinylestradiol w/ x, where x is e.g. levonorgestrel, norethisterone etc.
o Prescribed as one tablet od po
The COCP increases and decreases the risks of which cancers?
Lower risk of ovarian, endometrial, colorectal
Higher risk of breast, cervical
What are the UKMEC criteria?
1: no restriction on use
2. advantages > disadvantages
3. disadvantages > advantages
4. contraindicated
What hormone is in the IUS?
Levonorgestrel
How often is the injected depo provera given and by what route?
IM injection every 12w (Can be given up to 14w after last dose)
Which contraceptives thicken cervical mucus?
Implant (nexlpanon)
Injectable (Depo Provera)
IUS
POPs
What is in EllaOne?
Ulipristal (a SPRM)
Which contraceptives make periods better and which make them worse?
Better:
- COCP
- IUS
Worse:
- Implant
- Injection
- Copper coil
- POP
Do you need contraception post-partum?
Not for the first 6w
Then breastfeeding has a 98% contraceptive protection up to 6m
Which contraceptive can be inserted immediately following TOP?
Implant
What side effect is common from the POP?
Irregular bleeding
How does the implant nexplanon work?
Inhibits ovulation and thickens cervical mucus
Give 3 advantages of the IUS
o Intermittent, light, less painful bleeds (or amenorrhoea)
o LARC (Mirena/Kyleena lasts 5yrs, Jaydess lasts 3yrs, or Mirena 4yrs if using as endometrial protection for oestrogen only HRT)
o Can be given for contraception AND endometrial protection w/ HRT
o Can be given w/in 48hrs after childbirth
o UKMEC 1 for anticonvulsants
Give 3 advantages of the implant nexplanon
o Most effective form of contraception o LARC (3 yrs) o No oestrogen o Can be inserted immediately following TOP o UKMEC 2 for anticonvulsants
What’s the dose of EllaOne (Ulipristal)?
30mg
Give 3 disadvantages of the COCP
o Forget to take
o Might not work if vomit w/in 2hrs of taking
o No protection against STIs
o Increased risk of VTE, breast Ca, cervical Ca, stroke, IHD
o Temporary side effects of headache, nausea, breast tenderness
o Interaction w/ enzyme-inducing drugs like rifampicin
o Not recommended >50yo, BMI>35, VTE risk, HTN, immobility, smoking, BC risk e.g. BRCA, gallbladder disease, DM, migraine, stroke, IHD, <6w post-partum and breastfeeding
What are 2 alternative IUS devices to the Mirena? Describe how they’re different
- Kyleena is smaller, lower levonorgestrel, lasts 5yrs, less chance of amenorrhoea
- Jaydess has a smaller frame, narrower inserter tube, even lower levonorgestrel, lasts 3yrs
What are 3 UKMEC stage 3 criteria for the COCP?
- > 35yo AND <15cig/day
- BMI > 35
- VTE in 1st degree relative <45yo
- Controlled HTN
- Immobility e.g. wheel chair
- Carrier of mutation ass.w. BC e.g. BRCA
- Current gallbladder disease
- Less severe DM diagnosed >20yo
How does the COCP work?
Inhibits ovulation
How soon after getting the implant nexplanon are you protected?
Barrier needed for first 7d unless inserted on day 1-5 of cycle
Give an example of a combined contraceptive patch
Evra
Which contraceptive doesn’t given immediate return to fertility after stopping?
Injectable depo provera
May take up to 12m to return to fertility
When are you protected are starting COCP?
Immediately if w/in first 5d of cycle or if you start on day 21 post-partum
After 7d otherwise so use barrier
What are the 3 forms of emergency contraception?
Levonorgestrel (Levonelle)
Uliprisal (EllaOne)
Copper IUD
What’s the brand name of the injectable contraceptive?
Depo Provera
How often and what time do you take the POP?
Od
w/in the same 3hrs each day (same 12hrs for Cerazette (desogestrel)
When can the copper coil be inserted for emergency contraception?
o Insert w/in 5d of UPSI or up to 5d after likely ovulation date
Which of the emergency contraceptive pills can be given multiple times per cycle?
Both of them! (levonorgestrel (Levonelle) and ulipristal (EllaOne)
What is in the implant nexplanon?
etonogestrel (progesterone)
What happens if you forget to change your combined contraceptive patch (Evra)?
End of week 1 or 2:
<48 hrs -> change immediately
>48hrs -> change immediately, barrier for 7d, emergency contraception if unprotected sex in last 5d or during the patch-free interval
End of week 3:
Remove patch immediately, start new patch at start of next week 1 cycle
End of week 4 (patch free week):
Barrier for 7d after delay of starting new patch cycle
How do each of the emergency contraceptives work?
Levonorgestrel (Levonelle) inhibits ovulation and implantation
Uliprisal (EllaOne) inhibits ovulation
Copper IUD decreases sperm motility and survival -> prevents fertilisation and implantation
Which contraceptives inhibit ovulation?
COCP Levonorgestrel (Levonelle) Ulipristal (EllaOne) Progesterone implant (Nexplanon) Depo Provera (injected) Cerazette POP (desogestrel)
What happens if you miss 2 COCP pills?
Take the last missed pill, even if means taking 2 pills at once
Use barrier until taken pills for 7d in a row
In week 1?
• If unprotected sex in pill-free period or week 1 -> emergency contraception
In week 3?
• Omit the pill free interval
How soon after mirena insertion are you protected?
Immediate protection if first 7d of cycle
Otherwise use barrier for 7d
How soon after starting COCP and POP are you protected?
Immediately if first 5d of cycle
Otherwise use barrier for 2d