Emergency Contraception

Question 1

What is the mode of action of levonorgestrel 150mgs?

Answer 1

Inhibits ovulation & also↓Sperm function ↓Endometrial receptivity

Question 2

What is the failure rate of levonorgestrel EC?

Answer 2

1.2-2.1% if used within 5 days

Question 3

What reduces the effectiveness of levonorgestrel EC

Answer 3

obesity

Question 4

When should levonorgestrel pill be taken (Levonella)?

Answer 4

Within 24hrs (95% success), 
no less than 72hrs (58%)

Question 5

What reduces the effectiveness of Levonelle?

Answer 5

Vomiting within 2 hours of taking it.

Not affected by enzyme inducers.

Question 6

Action of IUD

When can it be insterted and how is it given

Answer 6

Prevents implantation and sperm toxic
Most effective form
Inserted up to 5 days after sex
Usually given with antibiotic prophylaxis

Question 7

Action of EllaOne (ulipristal morning-after pill)

Why is it useful

Answer 7

Prevents ovulation & stops implantation
Up to 120hrs post coitus
Blocks progesterone so can inhibit progesterone contraceptives
e.g If implant given after unprotected sex + Ulipristal, barrier methods must still be used until next cycle