A.11-Contraceptives Flashcards
list the types of hormonal contraceptives
- oral pills
- long acting ‘depot injections’
- subcutaneous implants
- transdermal patch
- vaginal ring
- intrauterine device-IUD
for how long is the ‘depot’ injections effective?
8-13 weeks
for how long in the subcutaneous implants effective?
3-6 years
effectiveness of transdermal patch
1 week
vaginal ring is used for
3 weeks, 1 week break
IUD is effective for
5 years
types of preparations used for oral contraception
- combination of estrogen+progesteron
2. progestin only “mini pill”
with the pill, what does biphasic form of dosage mean?
dosage of components (estrogen+progesteron combination) is changed once during the cycle
what is the estrogen component in combination pill?
ethinyl-estrdiol
what is the progestin component in combination pill?
levonorgestrel desogestrel drospirenone norethisterone cyproterone acetate
mechanism of action of combination pill
- selective inhibition of pituitary function (LH and FSH ↓) –> inhibition of ovulation
- produce changes in cervical mucosa, ↓ likelihood of conception
clinical uses of contraceptives
prevent estrogen deficiency in primary hypogonadism
treat acne, hirsutism, dysmenorrhea, endometriosis
reduce risk of ovarian cysts
lower incidence of ectopic pregnancies
SE of contraceptives
mild-nausea, edema, headache
moderate- breakthrough bleeding, weight gain, skin pigmentation, vaginal infections
severe- thromboembolism, depression, GI disturbances
contraindication of contraceptives
thromboembolic/ cardiovascular event
vaginal bleeding of unknown origin
smoking?
estrogen-dependent neoplasm
examples for postcoital contraceptive “morning-after pill”
levonorgestrel Ulipristal acetate (SPRM)