Name the category.
Contraceptives
Name the main drugs.
ETHINYLOESTRADIOL/ LEVONORGESTREL
What is the mechanism of action of the syntetic estrogen ethinyl estradiol?
Activation of estrogen receptors
List indications of ethinyl estradiol.
Hormone replacement therapy
Combined oral contraception
Hypogonadism
List side effects of ethinyl estradiol.
Endometrial cancer
Thromboembolic events
Vaginal clear cell adenocarcinoma (in patients exposed to DES in utero)
↑ Risk of cardiovascular conditions (e.g., myocardial infarction, hypertension)
Describe the general mechanism of action of estrogen in contraception.
Hypothalamus: suppresses release of GnRH
Pituitary: suppresses release of gonadotropins
Decreased LH production and release leads to inhibition of ovulation.
Decreased FSH level prevents ovarian folliculogenesis.
List common side effects of estrogen.
Venous thromboembolism (VTE): increased rate due to estrogen-mediated coagulopathy
Cardiovascular events
Hypertension: increased risk in patients with a history of HTN during pregnancy and/or family history of HTN
Headaches
Hepatic adenoma development
Mastopathy and mastodynia
Nausea, GERD
List absolute contraindications for estrogen-containing OCPs
Cardiovascular
Thromboembolism
Coagulopathy, antiphospholipid antibodies
Coronary heart disease
Stroke
Arterial hypertension (> 160/95 mm Hg)
Heart defects
Metabolic
Pronounced hypertriglyceridemia
Metabolic disorders of the liver
Insulin-dependent diabetes mellitus with vascular complications or duration greater than 20 years
Oncologic
Hepatic tumors
Estrogen-dependent tumors (e.g., breast cancer)
Inflammatory
Acute pancreatitis
Lupus erythematosus
Vasculitis
After herpes gestationis
Other
Smoking > 35 years of age (due to significant increase in the risk of VTE)
Genital bleeding of unknown cause
Pregnancy
Migraine with aura
List relative contraindications for estrogen-containing OCPs
Superficial venous thrombosis
Thrombophlebitis
Severe varicosis
Hypercholesterolemia
Morbid obesity
Diabetes mellitus
Age > 40 years
Migraines
Uterine leiomyomas (especially intracavitary)
Epilepsy
Smoking
Lactation (progestin-only preparations permitted): otherwise ↑ risk of thromboembolism due to estrogen excess
Ulcerative colitis
What is levonorgestrel?
Oral emergenxy contraception medication —> progestin
What is the mechanism of action of levonorgestrel?
Activate progesterone receptors
List indications for levonorgestrel.
Contraception (alone or in combination with estrogens)
Abnormal uterine bleeding
Progesterone challenge test
Endometriosis
List side effects of levonorgestrel.
Breakthrough bleeding
Venous thromboembolism
Dizziness
Bloating
Weight gain
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