Contraception Flashcards
What are the main types of contraception?
COCP POP Progesterone implant Progesterone patch IUD IUS Condoms
What does the COCP contain?
Oestrogen + progesterone
How is the COCP taken?
21 days on
7 days off
Take 1 pill a day at a similar time
What is the effect of the COCP?
Inhibits ovulation
Inhibits follicular development
Thickens cervical mucus
What are contraindications for the COCP
BMI >35 + >15 cigarettes/day FHx of VTE <45y HYpertension Immobility History of VTE Migraine with aura
What are benefits of the COCP?
Improve acne
Reduce menstrual symptoms
Reduce risk of endometrial + ovarian cancer
Does any additional contraception need to be used when the COCP is started?
If after day 5 - use 7 days of barrier protection
What are the risks of the COCP?
No STI protection
VTE
Mood changes
What happens if you miss one COCP?
Take it ASAP - even if 2 in one day
What happens if you miss 2 or more COCP?
Take 1 ASAP - even if 2 in one day
Use alternative contraception for 7 days
If in last 7 days - do not take break
What does the POP contain?
Progesterone
How is the POP taken?
Taken daily - similar time each day
What is the effect of the POP?
Thickens cervical mucus
Reduces motility of fallopian tubes
Does any additional contraception need to be used when the POP is started?
If after day 5 - use 2 days of barrier contraception
What are contraindication for the POP?
Current breast cancer
Liver disease
Ischaemic heart disease
Who can use the POP?
Older women Heavy smokers VTE history HTN Breastfeeding women
What are the side effects of the POP?
Menstrual irregularities Increased risk of ectopic pregnancy Mood changes Acne Weight gain
What happens if you take the POP <3 hours late?
Continue as normal
What happens if you take the POP >3 hours late?
Continue and use 2 days barrier contraception
What does the patch contain?
Oestrogen + progesterone
How is the patch used?
3 patches - one per week
1 week patch free
What is the effect of the patch?
Inhibits ovulation
What is a benefit of the patch?
Can make periods lighter
What are negatives of the patch?
Skin irritation
Visible
What happens if you miss a patch in week 1 or 2?
<48 hours
- change immediately
- continue as normal
> 48 hours
- change immediately
- use barrier method for 7 days
What happens if you delay the start of the patch?
Use a barrier method for 7 days
What happens if you delay the removal in week 3?
Remove ASAP
Continue as normal
What does the injection contain?
Progesterone
How is the injection given?
IM injection every 12 weeks
What is the fertility return like with the injection?
Can take up to a year
What is the effect of the injection?
Inhibits ovulation
What are the advantages of the injection?
Reduces risk of ectopic pregnancy
Reduces risk of endometrial cancer
Safe for breast feeding
What are disadvantages of the injection?
Irregular bleeding
Weight gain (3kg/year)
Reduces bone density
What does the implant contain?
Progesterone
What is the effect of the implant?
Inhibits ovulation
How is the implant used?
Small procedure to insert
If inserted after day 5 - use barrier method for 7 days
What are contraindications for use of the implant?
Current breast cancer Liver disease Stroke Ischaemic heart disease Hepatic enzyme inducing drugs
How long does the implant last?
3 years
What is the return to fertility like after using the implant?
Returns immediately
What are side effects of the implant?
Irregular/heavy bleeding
Nausea
Headache
Breast pain
What does the IUS contain?
Progesterone
What is the effect of the IUS?
Prevents endometrial proliferation
Thickens cervical mucus
How long does the IUS last?
5 years
Who can use the IUS?
Migraine sufferers
Obese patients
On hepatic enzyme inducing drugs
What are the uses for the IUS?
Contraception
Menorrhagia
Prevention of endometrial hyperplasia in oestrogen therapy
What are the contraindications for the IUS?
Pregnancy
STI
Gynae cancer
Anticoagulation problem
What are the side effects of the IUS?
Change in bleeding - usually lighter
Mastalgia
Mood changes
What does the IUD contain?
Copper
What is the effect of the IUD?
Reduces sperm motility
Prevents implantation
How long does the IUD last?
5-10 years
What are contraindications for the IUD?
Copper allergy
Heavy periods
Wilson’s disease
What are the uses for the IUD?
Older women
2nd line in younger women
Emergency contraception
What are side effects of the IUD?
Heavier periods
How long after UPSI can the IUD be used?
120 hours
What is the only contraception that protects against STIs?
Barrier methods
- condom
- cap
What are permanent contraception options?
Sterilisation
What is female sterilisation called?
Tubal ligation
What is the failure rate for female sterilisation?
1 in 2000
How is female sterilisation done?
Under GA - cut + tie fallopian tubes
What contraception needs to be used alongside female sterilisation?
Other method until 1st period
What is male sterilisation called?
Vasectomy
What is the failure rate for male sterilisation?
1 in 200
How is male sterilisation done?
Under LA - vas deferens cut and tied
How long until a vasectomy works?
Up to 8 weeks
Need 2 sperm samples showing azoospermia
What are options for emergency contraception?
Ulipristal acetate
Levonorgestrel
IUD
What is the brand name for ulipristal acetate?
Ellaone
What is the effect of ulipristal acetate?
Inhibits ovulation
How long after the UPSI can ulipristal acetate be used?
Up to 120 hours
What condition in ulipristal acetate contraindicated in?
Severe asthma
Can ulipristal acetate be used more than once per cycle?
No
What do you need to do with normal contraception after use of ulipristal acetate?
5 days off of hormonal contraception
What is the effect of levonorgestrel?
Inhibits ovulation
How long after the UPSI can levonorgestrel be used?
Up to 72 hours
Can levonorgesrel be used more than once a cycle?
Yes
When do you double the dose of levonorgestrel?
> 70kg
> BMI 35
What do you need to ensure when prescribing to a child?
Gillick competence
What needs to be fulfilled for Gillick competence?
- able to understand implications of treatment
- cannot be persuaded to tell parents
- likely to be sexually active with or without contraception
- is likely to suffer if no contraception given
- is in the best interest
What guideline is used when giving contraception?
UKMEC guidelines