Contraception Flashcards
What is the Pearl Index?
The number of contraceptive failures per 100 women-years of exposure
What does LARC mean?
Long Acting Reversible Contraception
Roughly when does ovulation happen?
Day 12-18
Roughly how long does the egg survive?
24 hours
When is the highest chance of pregnancy from sex?
Day 8-19
Which hormones are in combined hormonal contraception (CHC) and how do they work?
Ethinyl estradiol (EE) and synthetic progesterone (progestogen)
Stops ovulation, also affects cervical mucus and endometrium
How often is the EVRA patch changed?
Weekly
How often is the Nuvaring changed?
Every 3 weeks
What is the main increased risk with CHC use?
Increased risk of venous thrombosis - DVT, PE
How often is the progestogen only pill taken?
Every day without a pill free interval
What are the contraindications of taking the progestogen only pill?
Personal history of breast cancer or liver tumour
What are some of the side effects possible when using progestogenic methods?
Appetite increase Hair loss/gain Mood change Bloating or fluid retention Headache Acne
How often is injectable progestogen used?
Every 13 weeks
How does injectable progestogen prevent pregnancy?
Prevents ovulation
Alters cervical mucus to make it hostile to sperm
Makes endometrium unsuitable for implantation
Which contraceptive method has a causal effect on weight gain, delayed return of fertility and bone density?
Injectable progestogen - Depoprovera
