menstrual Flashcards
cyclic bleeding occurs every how many days
- 21-35 days
- cycle day #1 (first day of bleeding) through cycle day #1 of next cycle
life cycle of corpeus luteum is
always 14 days
What is primary amenorrhea
- lack of onset of menses by age 15 (with normal growth and secondary sex characteristics)
- lack of onset of menses by age 13 with lack of normal secondary sex characteristics
lack of menses for 6 months after irregular or 3 months of regular menses
secondary amenorrhea
what should be checked on every patient who presents with amenorrhea
urine or serum HCG for pregnancy
What is DDX in a female patient who presents with primary amenorrhea and the patient is found to be genotypically male (XY)
-
5α-Reductase deficiency
- is an enzyme that converts testosterone to 5α-dihydrotestosterone (DHT) in peripheral tissues
-
Androgen insensitivity syndrome
- resistant to male hormones (called androgens).
What is DDX in a female patient who presents with primary amenorrhea and you suspect defect of urogenital sinus development
- vaginal agenesis
- transverse vaginal septum
- imperforate hymen
asherman’s syndrome etiologies
- iatrogenic or infectious damage to endometrium
- causes
- aggressive surgical curetting
- infectious disease (ex. TB)
- h/o multiple cesarean sections
- endometrial ablation
asherman’s syndrome can present as primary or secondary amenorrhea
can present as either primary or secondary amenorrhea
What are some causes of hypothalamic dysfunction -> GnRH deficiency
- genetic
- weight loss resulting in <10% body fat
- extreme exercise
- nutritional deficiencies
- extreme stress
role of prolactin in amenorrhea
- prolactin inhibits GnRH resulting in low gonadotropins and low gonadal hormones
if persistent hyperprolactinemia, review patient h/o of
- pregnancy or breastfeeding
- medications
- excessive breast stimulation
What are some symptoms of prolactinoma
- hyperprolactinemia
- galactorrhea
- HA
- visual disturbances
What is sheehan syndrome associated with? What is the result?
- associated with significant hemorrhage during childburth with resulting hypotension and decreased blood flow to pituitary causing ischemic damage
- results in low gonadotropins (FSH, LH) as well as other pituitary hormones -> secondary amenorrhea
what condition should you consider in a women who goes through menopause before age of 40 yo with a h/o chemotherapy, radiation, or systemic illness
primary ovarian insufficiency (premature ovarian failure)