EHC COPY Flashcards
API in Levonelle
Levonorgestrel 1.5mg
API in ellaOne
Ulipristal acetate 30mg
What are the 3 forms of emergency contraception?
Leveonelle
ellaOne
Coppier-bearing IUD (Non-hormonal)
List the 3 types of hormonal contraception from most effective to least effective
Copper-bearing IUD
ellaOne
Levonelle
When is pregnancy most likely in a woman’s cycle?
Pregnancy is possible at any point in the month, and most likely around the ovulation period.
Ovulation may occur between days 6-21 in cycles, but not all women have 28 day cycles.
Indications for Levonelle and ellaOne
-After UPSI
Hours since UPSI must be established
Episodes of UPSI in current cycle must be established
-after ejaculation on to external genitalia
-after contraceptive failure
Give example of contraceptive failure
- split condom (male/female)
- missed pills
- DDI with hormonal contraception
- Delayed contraceptive implant or injection
- detached contraceptive patch
- dislodged IUD
- dislodged/early removal of diaphragm
Levonelle mechanism of action
Prevents ovulation and fertilisation
Discourages implantation
ellaOne mechanism of action
Delays ovulation
Age for Levonelle
Licensed OTC for ages 16 and over
Age for ellaOne
Licensed OTC for all women of childbearing age
Levonelle hours since UPSI licence
Licensed up to 72 hours after UPSI
ellaOne hours since UPSI licence
Licensed up to 120 hours after UPSI
Efficacy of UPA in ellaOne reduced when?
Efficacy of UPA reduced if any progesterone is taken in the 5 days post UPA (or before)
- offer Levonelle (LNG) instead
Sources of progesterone
COC, POP, HRT, LARCs
Side effects of Levonelle
Headache Nausea Breast tenderness Lower abdominal pain Irregular bleeding Fatigue Dizziness Increased risk of ectopic pregnancy
Side effects of ellaOne
Headache Nausea Abdominal Pain Dysmenorrhoea Mild to moderate dizziness
Contraindications of Levonelle
Pregnancy
Bowel disease
Hepatic impairment
Enzyme inducers e.g. St John’s Wort, ritonavir, ciclosporin, griseofulvin, phenytoin, carbamazepine, barbituates
What to do if a patient is on an enzyme inducer drug and you must give them leveonelle?
2nd dose levonelle 12 hours after
not licensed but is conservative practice - GP, PGD
Contraindications of ellaOne
pregnancy/suspected pregnancy
severe hepatic impairment
severe asthma uncontrolled by oral steroids
breastfeeding (36hr/1 week abstention)
drug interactions (CYP3A4 inducers, ritonavir (long term), levonorgesterel, hormonal contraception, progestogen-containing drugs)
How does progestogen affect ellaOne action?
Progestogen reduces the ability of UPA to delay ovulation. It is unknown whether this reduces the effectiveness of UPA in preventing pregnancy.
Progestogen or progesterone-containing drugs taken before UPA may theoretically affect effectiveness
What action does a lady need to take if vomiting occurs after she takes EHC?
Take another dose/come back to pharmacy
What should you warn a woman about what may happen after she has EHC?
- pregnancy MAY occur but unlikely
- if you vomit, come back to the pharmacy for another dose
- your next period may be late, heavy or light
- spotting may occur
- if next period is different or >5 days late (LNG) or >7 days late (UPA) perform a pregnancy test 3-4 weeks after UPSI
- seek medical advice if lower abdominal pain occurs
Late periods after EHC - how late and what to do?
-If period >5 days late after taking Leveonelle , or
-if period >7 days late after taking ellaOne
Perform pregnancy test 3-4 weeks after UPSI
Advice regarding continuing contraception after EHC
- EHC is only for current pregnancy risk, continuing contraception may be required
- use a barrier method until next period
- oral EHC doesn’t provide protection against sexually-transmitted infections or further contraceptive cover
- discuss risk/screening for STIs etc.(ask if regular partner, sensitively)
Which EHC is cheaper?
Leveonelle is cheaper
ellaOne product advice
- take one stat
- delays ovulation
- 2% pregnancy rate in the 5 days
- Nausea, headache or dizziness
- 2nd dose required if vomit within 3 hours
- NMP may appear different
Levonelle product advice
- Take one stat
- Delays ovulation
- Pregnancy risk increases from day 1 (2%) to day 3 (5%)
- Nausea, headache, refer abdominal pain
- 2nd dose required if vomit within 3 hours
- NMP may appear different
Continuing contraception after ellaOne
- Omit normal pill today – 5 days if containing progesterone
- use barrier contraception until NMP
- STIs – establish relationship status and signpost
Continuing contraception after Levonelle
- Omit normal pill today
- use barrier contraception for 7 days (2 for POP, 9 for Qlaira)
- STIs – establish relationship status and signpost
How does regular contraception work?
Works by making ovaries dormant
What is the effect of missed contraceptive pills on protection from pregnancy?
Missed pills stop dormancy and trigger ovulation
After missed pills and EHC, the aim is to make the ovaries dormant again
BNF advice on starting a COC when previously on a POP
- Ensure previous contraception taken effectively/exclude pregnancy
- If starting a COC on day 6 or later, add precautions for 7 days
- First 7 and last 7 (active pills) important
BNF advice on starting a POP when previously on a COC
- POP (Qlaira) - additional precautions for 9 days
- POP (other brand) - add precautions for 7 days
Advice on starting a POP for the first time - advice?
- Start at any point and no additional precautions if on Micronor/Noriday
- If starting Cerazette POP start within days 1-5 (period) and no additional precautions needed
- If starting Cerazette from day 6 onwards, use additional precautions for 2 days
Changing to a POP from a COC (ED)
If ED/placebo pills taken, use additional precautions for 2 days
COC (not ED) to POP
Omit pill-free period, start POP immediately for immediate cover
COC to POP (Cerazette)
Omit pill-free period for immediate cover
If pill-free period was taken, use additional precautions for 2 days
Missed pill advice - COC
- > 24 hours late
- If starting on day 6 or later, add precautions for 7 days
- critical at end or start of cycles as pill-free period elongated
- EHC indicated if 2 or more COC pill missed (>24 hours late)
- takes 7 days to build cover back up
Missed pill advice - POP Cerrelle
If >3 hours late:
Continue pills with 2 days extra precautions
EHC indicated if 1 or more pills missed (>3 hours late) and UPSI occurs before 2 tablets are taken correctly.
-takes 2 days to build cover back up
Continuing contraception advice after EHC taken (LNG)
Today - omit regular dose of contraception
Tomorrow onwards:
-additional contraception precautions for 7 days (CHC) or 2 days (POP) or 9 days (Qlaira COC)
In future correct/effective contraception use to avoid further risk of pregnancy
Continuing contraception advice after EHC taken (UPA)
Today - omit regular dose of contraception
Tomorrow onwards:
Omit COC/POP for 5 days and use additional precautions until next menstrual period
In future correct/effective contraception use to avoid further risk of pregnancy
Missed pill advice - POP Cerazette
If >12 hours late
continue pills with 2 days extra precautions
EHC indicatedi if 1 or more pills missed (>3hrs late) and UPSI occurs before 2 tablets are taken correctly
-takes 2 days to build contraceptive cover back up