OBGYN Flashcards
(126 cards)
How long is the average menstrual cycle?
28 days
How many phases are there of the uterus and what are the called?
Mensuration, proliferative, and secretory phase
How many phases are there of the ovum?
Follicular phase and the luteal phase
What is the primary hormone in the follicular phase?
FSH and LH
What does FSH do?
It stimulates growth of the follicle and production of estrogen by stimulating granulosa cells to make aromatase which converts androsteidone (from theca cells) to estrogen.
Why are anovulatory cycles a problem?
They mean that unopposed estrogen is exposed to the uterine lining. Because there is no corpus luteum no progestrone is produced.
What are causes of secondary amenorrhea?
Pregnancy, Prolactinoma, hypothyroidism, menopause (hypergonadotrpic hypogonadism)
What is the criteria in order to diagnose a patient with amenorrhea?
The patient with regular cycles has no periods for greater than 3 months. OR in a person with irregular periods greater than 6 months.
What is oligomenorrhea?
Menstrual cycles greater than 35 days long or less than 9 cycles in a year.
What is menorrhagia?
Heavy and prolonged menstrual bleeding
hypomenorrhea
spotting
Metorrhagia
Bleeding between menstrual periods
What are some of the causes of abnormal uterine bleeding.
Remember the pneumonic PALM. Polyp, adenomyosis, Leiomyata, and Malignancy.
How do we diagnose pregnancy?
urine bHCG and transvagial ultrasound
If a patient has amenorrhea what should work up for this patient look like?
BHCG, prolactin, TSH, FSH, estradiol
If a progestrone withdrawl test is done in a patient with amenorrhea and has withdrawl bleeding what is the reason for amenorrhea?
progesterone deficiency
What is PCOS?
Due to problems of progress and or regression of the follicles the follicles become cystic.
What are common associations of PCOS?
Insulin resistance, acanthosis nigracans, obesity, weight gain, and type 2 diabetes
What is the diagnosis of PCOS?
It’s a diagnosis of exclusion, typically we rule out cushing, 21 hydroxylase, IGF-1 etc
What is treatment for PCOS in a patient that doesn’t currently want children ?
OCP
What is the treatment of PCOS in a patient that wants children?
clomephine or letrzole (usually used in women with a BMI over 30)
what is the mechanism of action of letrozole?
It inhibits aromatase
What are the risks associated with taking OCP’s?
Increased risk of coagulopathies, hypertension, and benign hepatic tumors
Medroxyprogestrone acetate
Hormonal depot or the injection