GU midterm Flashcards
Phases of menstrual cycle=
Phases:
day 1: menses→follicular→
day 14: ovulation→luteal to day 30
Menstrual Cycle Hormonal Sequence of Events=
Sequence of events:
hypothalamus secretes [GnRH] → stimulates anterior pituitary to secrete…
[LH/FSH]→ causes ovarian follicles to mature, secreting…
[estrogen/progesterone]→ ovulation→ if no fertilization→ drop in…
[progesterone]→ menses
Name the four primary hormones of the menstrual cycle:
[GnRH]
[LH/FSH]
[estrogen/progesterone]
[progesterone]
signs of estrogen excess:
dysmenorrhea; nausea; edema; enlarged uterus, uterine fibroids; fibrocystic breast changes; menorrhagia
signs of estrogen deficiency:
scant menses; mid cycle spotting
signs of progesterone excess:
edema; bloating; headache; depression; weight gain; fatigue; HTN; varicose veins
signs of progesterone deficiency:
symptoms similar to those with anovulatory cycles, endometriosis, adenomyosis, endometrial hyperplasia; prolonged menses; heavy menses; severe cramps; luteal spotting; BTB
normal menstrual cycle:
21-35 day cycles
normal age of menarche:
in US is 12-13yo
Amenorrhea=
absence or abnormal cessation of the menses for more than 3 months
Oligomenorrhea=
scanty menstruation; menstrual periods occur at intervals of greater than 35 days, with only 4-9 periods in a year
Polymenorrhea=
occurrence of menstrual cycles of greater than usual frequency
Menorrhagia (hypermenorrhea)-
excessively prolonged or profuse menses
Metrorrhagia-
any irregular, acyclic bleeding from the uterus between periods
Menometrorrhagia-
irregular or excessive bleeding during menstruation and between menstrual periods
Dysmenorrhea-
painful menses
Mittelschmertz-
one-sided lower-abdominal pain that occurs in women at or around the time of ovulation
Primary Amenorrhea=
-Primary: 0.3% prevalence; no secondary sex characteristics by age 14; no menses by age 16
Secondary Amenorrhea=
Secondary: 1-3% prevalence; no menses per 3 cycles or 6 months, whichever sooner, in a woman w/ previous menses
Primary Amenorrhea Causes=
CNS hypothalamic pituitary disorder; membranous blockage of vagina (hymen); drastic weight loss/ malnutrition/ eating disorder; hypoglycemia; extreme obesity; thyroid disease; anemia; congenital abnormalities of genital system
Secondary Amenorrhea 4 most common causes=
- normogonadotropic anovulation
- hypogonadotropic hypogonadism
- prolactinoma
- hypergonadotropic hypogonadism
hypergonadotropic hypogonadism:
Causes Secondary Amenorrhea
high LH/FSH, but unresponsive ovaries; premature ovarian failure
prolactinoma:
Causes Secondary Amenorrhea
high prolactin; medications, pituitary tumor, hypothyroidism
hypogonadotropic hypogonadism:
Causes Secondary Amenorrhea
low LH/FSH so lack of stimulation of ovary; psychological and physical stress
normogonadotropic anovulation:
Causes Secondary Amenorrhea
normal LH/FSH, but cyclic secretion disrupted, therefore, no ovulation and low progesterone; polycystic ovarian syndrome
Additional causes of secondary Amenorrhea:
- pregnancy (must rule out)
- weight reduction/ drastic gain
- stress/ depression
- hypothyroidism
- PCOS (elevated estrogen and testosterone)
- obesity (elevated estrogen)
- increased prolactin (inhibits GnRH)
- premature ovarian failure (early menopause)
Amenorrhea Medications=
- hormonal contraception, doesn’t require intervention, may consider change to different contraception
- antipsychotics
- antidepressants, inc. tricyclics and MAOIs
- cardiovascular meds inc Ca-blockers, Aldomet, Reserpine, Digoxin
- ovarian toxins (cytoxan, fluorouracin, cisplatin)
Hypoestrogenic amenorrhea=
puts woman at higher risk for bone mineral density loss… osteoporosis
Amenorrhea evaluation physical exam=
-secondary sex characteristics; imperforate hymen/ normal anatomy; sexual maturity; weight; thyroid, hyperandrogenism signs
Amenorrhea evaluation initial labs=
-B-hCG; TSH; PRL; progesterone challenge test, rule out estrogen deficiency,
What are PCOS (PolyCystic Ovarian Syndrome) associated symptoms?
-secondary amenorrhea; metabolic dysfunction; hyperestrogenic/ androgenic state; anovulation
PCOS hormonal implications: androgens:
- inc levels of estrone due to conversion of ovarian and adrenal androgens to estrone in body fat
- suppress pituitary FSH
- ovary receives constant LH stimulation resulting in:
anovulation, cysts, hyperplasia of theca cells→ more
PCOS inc risk for:
infertility; DM; CVD; endometrial cancer
PCOS Diagnosing:
symptoms- hirsutism, anovulation; fasting glucose/ insulin; 2hr postprandial glucose and insulin; free testosterone, DHEA-S;
-PELVIC ULTRASOUND FOR POLYCYSTIC OVARIES NOT NECESSARY
PCOS Management=
-treat insulin resistance, hyperinsulinemia; address androgen excess problems; address fertility issues; address prevention of long-term PCOS complications
Long-term PCOS complications:
-diabetes, endometrial hyperplasia/cancer, CVD/dyslipidemia, breast cancer, obesity, fertility issues
PCOS Medication Treatments:
Medications
-Progesterone: normalize E:P, restore ovulation
- Spironolactone: reduce androgens and reducing abnormal hair growth - Metformin: regulates blood sugar and dec hirsutism and anovulation
PCOS Treatments: Supplements
- Inc SHBG: soy, flax, nettles, green tea
- Dec androgens: saw palmetto
- Improve insulin resistance: vit C, chromium, diet
- Inc ovulation: vitex (chaste tree), rhodiola, tribulus
Normal menstrual bleeding=
Normal: cycle_ 21-35 days; flow_ up to 7 days (ave 3-5); amount_ up to 80ml/day (1tsp=5ml)
Abnormal menstrual bleeding=
-Abnormal if: 35 days, >7 days menses, spotting in between menses (BTB of metrorrhagia)
RED FLAG: POST-MENOPAUSAL BLEEDING
Abnormal uterine bleeding terms:
menorragia; metrorrhagia; menometrorrhagia; polymenorrhea; contact bleeding
-Initiators of abnormal bleeding:
infection (STI); neoplasms (fibroids, polyps); endocrine/ hormonal (PCOS, thyroid, obesity, hyperprolactinemia, menopause); malignancies (endometrial/cervical); trauma; pregnancy
Menorrhagia causes:
pregnancy (must rule out); infection (STI screen); intrauterine device; uterine fibroids; endometrial/ cervical polyps; hypothyroidism (TSH, fT4); coagulation disorder (PT/PTT); neoplasms (pap, U/S, EMB); dysfunctional uterine bleeding
Menorrhagia symptoms:
symptoms: >80-90ml/period; menstrual bleeding> 7d; unusually heavy bleeding, requiring change of protection at night, menstrual flow interfering w/ lifestyle; fatigue, dizziness, and/or SOB
Managing Abnormal Bleeding:
determine the cause; control bleeding; prevent/treat anemia; restore normal menstrual cycle
Work-up of menorrhagia:
urine pregnancy; STI screen; endocrine work-up, PRL, TSH/fT4, FSH, E, P; coagulation work-up (PT/PTT); PAP; U/S, pelvic and transvaginal; EMB/hysteroscopy and biopsy
Dysfunctional Uterine Bleeding (DUB)=
- If all tests are normal: DUB (diagnosis of exclusion)
- associated w/ anovulatory cycles; overgrowth of endometrium due to estrogen stimulation w/out adequate (post-ovulatory) progesterone to stabilize growth, unopposed estrogen state; associated w/ long or short cycles
Uterine Fibroids aka…
leiomyomata, leiomyoma, fibromyoma, myoma
Uterine Fibroids=
- most common solid tumor in women; typically benin
- overgrowth of muscle and connective tissue in the wall of the uterus; most common indication for major surgery in women= 30% of hysterectomies
Uterine Fibroids Risk factors:
inc w/ age_35-45 yo; race_African American 3x more likely; genetic predisposition; hormones_ estrogen dominance; lifestyle_ nulliparous (no children)
Dysfunctional Uterine Bleeding (DUB) Symptoms:
usually asymptomatic
Symptoms: enlarged uterus; pressure, bloating; heaviness; constipation; vague feeling of discomfort; P w/ vaginal intercourse; urinary abnormalities: freq, urg, acute or chronic urinary retention, ureteral compression, hydronephrosis; pelvic pain-cramping; backache, esp during menses; abdominal enlargement; infertility, recurrent SAB
What is the m/c cause of abnormal bleeding?
Dysfunctional Uterine Bleeding (DUB)
T/F: pain is NOT a typical symptom with Dysfunctional Uterine Bleeding (DUB).
T
majority are asymptomatic (50-80%);