OB/GYN Flashcards
3 indications for getting a QUANTitative BhCG
dx and follow ectopic pregnancy
monitor trophoblastic disease
screen for fetal aneuploidy
Avg age of thelarche, adrenarche/pubarche and menarche
thelarche = 8-9 adrenarche/pubarche = 9-10 menarche = 12-13
Ages for primary amenorrhea
14 w/o secondary sex characteristics
16 if secondary sex characteristics
2 Cell hypothesis
LH -> Thecal cells -> androgen precursors
FSH -> Granulosa cells -> convert androgens into estradiol (therefore requires BOTH fxnal cells)
Trigger for ovulation
E2 rises –> LH surge mid-cycle –> ovulation
Corpus luteum prodoces…
progesterone
role of progesterone
endometrial proliferation
3 clinical signs of heavy periods
changes tampon q1hr, mutliple nighttime changes, anemia
6 predisposing factors for vaginal candidiasis
Abx, steroids, immunodef, DM, OCPs, pregnancy
vaginal pH in candidiasis
normal (3.8-4.2)
Tx vaginal candidiasis? Recurrent?
Tx = topical antifungals (monistat) or oral (fluconazole)
recurrent Tx = antifungal monthly after menses OR oral med daily/weekly
highly infectious vaginal infxn
trichomoniasis
the pt c/o genial pruritus, frequency, dysuria, and dyspareunia. On PE you note erythema, yellow-green frothy discharge, and punctate cervical hemorrhages (“strawberry cervix”). What is the dx?
trichomoniasis
4 Dx test trichomonas
vaginal pH >4.5, pap, saline prep (motile flagellated organisms), cx
Tx trichomonas
DOC = metronidazole, 1x 2g dose, also tx partner
Positive amine test
bacterial vaginosis
Clue cells
bacterial vaginosis
6 complications of bacterial vaginosis
PID, endometritis, post-op infxn, PPROM, chorioamnionitis, preterm delivery
Tx bacterial vaginosis
oral metronidazole
palpable mass on labia majora, painful and swollen but not fever, no drainage. Dx? Tx?
bartholin’s gland cyst
Tx = drain and catheter, sitz bath and marsupialization (definitive)
palpable, fluctuant mass on labia majora. painful, swollen, erythematous with drainage. Dx, Tx?
bartholin’s gland abscess
Tx drainage, abx, catheter, sitz bath and marsupialization (definitive)
4 causes of bartholin’s gland abscess
gonorrhea, chlamydia»_space;coliforms, anaerobes
palpable, firm, indurated mass on labia majora. No pain but is swollen. Dx, Tx?
bartholin’s gland tumor, dx = bx
Tx = excision
Abx for bartholin’s gland abscess (4)
doxy + metro
augmentin
azithromycin (chlamydia)
ceftriaxone (gonorrhea)
MC type of cervical cancer
SCCA
5 RF for cervical cancer
early 1st intercourse, multiple partners, High-risk HPV infxn, recurrent STDs, smoking
when can you switch from q2yr to q3yr pap smears?
30yo+ and 3 consecutive negative paps
2 indications for d/c pap smears
hysterectomy for a benign condition and no h/o high-grade cytologic abnormalities
OR
>65yo + 3 consec. neg. paps and normal for the past 10 yrs
management of ASC-US: low risk HPV
rescreen at 1yr
management of ASC-US: high risk HPV
colposcopy + bx
management of LSIL or HSIL
colposcopy and bx
Tx CIN I
close observation and repeat pap at 6 and 12mo AND/OR HPV DNA testing at 12mo. if negative, return to normal screening. Only applies if >21yo
Tx CIN II
ablation or ecision
f/u CIN 1-3 if negative margins
pap and/or HPV dna testing at 12mo
f/u if CIN 2-3 with positive margins
pap at 6mo +/- repeat endocervical curettage
what 4 strains of HPV does the quadrivalent vaccine (Gardasil) protect from?
is it effective?
what is the sequence of vaccination?
how long has it proven to last?
16,18 (cervical cancer)
6,11 (genital warts)
YES! > 90% efficacy
0 mos, 2 mos, 6 mos
2.5-3.5 years
Screening rec for any woman with prior tx for LSIL, HSIL or invasive cervical cancer? how long is she at risk for persistent/recurrent disease?
screen ANNUALLY, at increased risk for 20yrs
the pt presents with sudden onset of severe pain localized to one lower quadrant and is associated with nausea, vomiting, tachycardia, and sometimes fever. On PE the pt has direct tenderness in the lower quadrant, rebound tenderness (+psoas sign, +heel percussion sign) and an adnexal mass. 6 diff dx
adnexal torsion ectopic pregnancy appendicitis ruptured ovarian cyst tubo-ovarian absess (assoc with PID) rapidly growing neoplasm
what 5 tests would you want to do to evaluate for adnexal torsion and why?
HCG- to r/o ectopic pregnancy
pelvic ultrasound: assess ectopic pregnancy and adnexal mass
CBC: Hct (bleeding) and WBC (infxn)
CT scan: r/o appendicitis and adnexal mass
PCR: screen for G and C (TOA)
3 (proposed) etiologies of endometriosis
tubal regurgitation
metaplasia of mesothelium
hematogenous dissemination
dysmenorrhea + dyspareunia + chronic pelvic pain + infertility
classic tetrad for endometriosis
3 dx tests for endometriosis
bx (laparotomy) > laparoscopic visualization > US
laparascopic feature suggesting endometriosis
“powder burns”
5 tx for endometriosis
OCP, depo-provera, GnRH agonist, laparascopic sgy, laparotomy
MC gyn cancer
endometrial CA
MC type endometrial CA
adenocarcinoma
9 RF for endometrial CA
age, FHx, early menarche/late menopause, low parity, PCOS / unopposed E2, HRT, HTN, DM, obesity
The pt c/o abnormal uterine bleeding (menorrhagia, menometrorragia and increasing abdominal girth. on exam you find ascites, hepatomegaly, pulmonary changes, and an enlarged uterus. what is your diagnosis?
Endometrial CA UPO
Tx Endometrial CA
child-bearing age = high-dose progrestin??
post-menopausal = TAH/BSO +/- radiation
advanced d/s = TAH/BSO +/- adjuvant chemo
MCC PID
Chlamydia, gonorrhea, mixed flora
outpatient tx for PID
ofloxacin/levofloxacin + metronidazole 14D
OR
ceftriaxone + probenecid + doxy +/- metro 14d
2 inpatient tx for PID
cefotetan + doxy
OR
clinda + gent
3 major sequelae of PID
chronic pelvic pain, infertility, ectopic pregnancy
MCC infertility in women
irregular ovulation
7 tests to w/u PCOS and why
LH; elevated
testosterone: ovary overproduction = PCOS
I:G ratio: hyperinsulinemia
FSH: r/o premature menopause
DHEA-sulfate: adrenal overprodction of androgen
prolactin: causes amenorrhea
TSH: hypothyroidism causes amenorrhea
3 possible sequelae of PCOS
infertility, endometrial hyperplasia, endometrial CA
Tx PCOS (desire pregnancy or not)
desire pregnancy = clomiphene citrate +/- metformin
no desire = OCP, progestin, metformin
MC ovarian neoplasm in older women
serous (epithelial tumor)
MC ovarian neoplasm in teen/young adult
germ cell tumor
hormonally active ovarian mass
stromal cell tumors
MC ovarian mass in women of reproductive age
functional cyst
MC type of ovarian CA overall
epithelial tumors
5 tests for w/u of ovarian neoplasm
US, CA-125 level, exlap for bx
mammogram +/- colonoscopy for mets
MC ovarian neoplasm in women of reproductive age
cystic teratoma?
5 major causes of non-anatomical secondary amenorrhea
pregnancy, hypothyroidism, PCOS, hyperprolactinemia (prolactinoma), premature ovarian failure
Dx premature ovarian failure
sx + elevated FSH
Progesterone withdrawal test, hows it work?
progesterone+medroxyprogesterone x 5d, should withdrawal within 7-14d
withdrawal bleeding after progesterone withdrawal test, dx? Tx?
PCOS
Tx OCP+progestin+metformin vs. clomiphene + metformin
Negative progesterone withdrawal test and LOW FSH, dx tx?
hypothalamic-pituitary FAILURE –> HRT or gonadotropins
Negative progesterone withdrawal test and HIGH FSH, dx tx?
Primary ovarian failure
Tx = HRT, donor eggs
5 major causes of anatomic-related secondary amenorrhea
uterine leiomyoma, uterine malformation, endometrial polyp, endometriosis, IUD
menorrhagia vs. menometrorrhagia
excessive menstrual bleeding vs. excessive inter and itnra-menstrual bleeding
Tx anovulatory bleeding
progestin, OCPs
3 phases of menstrual cycle and timing
- follicular phase: first day of menses to the day of LH surge (14 days)
- Ovulation: occurs within 30-36 hrs of the LH surge
3: luteal phase: day of LH surge to the onset of menses (14 days)
principal hormone secreted/elevated in E2 deficient state
FSH b/c stimulates granulosa cells to convert androgens into estrodiol
Eggs are arrested in what cell cycle phase?
prophase of meiosis I
when are E2, progesterone and LH the lowest?
end of luteal phase (FSH already begins rising again during luteal phase to recruit new cohort of follicles!)
E2 vs. progesterone relationship to FSH and LH
E2 =negative feedback on FSH, positive feedback on LH
Progesterone = decreases BOTH
what induces endoervical secretion of watery mucus during follicular phase?
E2
What induces breast / temp changes during pregnancy
progesterone
What US abnormality are you looking for in postmenopausal woman NOT on HRT? next step?
endometrial stripe thickness, if 5mm+ then get bx
US technique used to look for polyps AND submucosal leiomyomas
sonohysterography saline infusion
utility of cervical conization
definitive dx of abnormal pap smear if colposcopy is inadequate/equivocal. Also possible tx for CIN
Tx Chlamydia
DOC = azithromycin 1x PO dose
OR
erythromycin, doxycycline
obilgate intracellular parasite that can only be grown in tissue culture
chlamydia trachomatis
STD symptoms plus pharyngitis, chlamydia or gonorrhea?
gonorrhea
Tx gonorrhea
DOC ceftriaxone IM x1
Tx syphilis in pregnant woman
ONLY penicillin (even if have to desensitize) bc only drug effective in preventing fetal infection too
MoA OCPs
inhibit ovulation, alter cervical mucus, alter endometrium
what are 8 absolute contraindications for combination oral contraceptives?
Smoking and age >35 Hyperlipidemia (congenital) Ischemic heart disease Pregnancy Bleeding from genitl tract (undiagnosed) Liver disease Estrogen-dependent tumor (breast ca) DVT/PE in history
what is the ingredient in Plan B?
when should it be taken?
what is an alternative to it?
levonorgestrel (progestin only)
within 72 hrs of unprotected intercourse
copper IUD within 5 days
SEs of depo-provera
breakthrough bleeding, wt gain, depression, bone loss
w/u of suspected menopause
pregnancy test, FSH!, TSH, bone mineral density
Menopause, increased LH or FSH?
FSH
what is the difference btw T score and Z score in BMD tests?
T score compares BMD to young population-important value when determining risk for vertebral or hip fx in postmenopausal women
Z score compared BMD to age matched population- important to use in young athletic women (ballerinas, gymnasts, marathon runners)
what is the T score for osteopenia? osteoporosis? normal?
normal: at or above -1 SD
osteopenia: -1 to -2.5 SD
osteoporosis: below -2.5 SD
3 antidepressants for post-menopausal women
SSRIs, venlafaxine, buproprion
5 PROVEN benefits of HRT
decrease: hot flashes, vaginal dryness, risk of fractures, colorectal cancer
improve sleep
4 adverse effects of HRT
increased risk of CAD, CVA, DVT/PE, Breast CA
Naegel’s rule
LMP -3mo + 7d
11 teratogens and assoc. problems
ACE inbit- renal injury
ARBs- renal injury
antineoplastic agents: varied defects
anticoagulant (oral): facial deformity, intracerebral bleeding
Beta blockers: growth restriction
Carbamazepine: spina bifida, facial abnormalities
valproic acid: spinda bifida
lithium: cardiac malformations
tetracycline; stains teeth
quinolones: cartilage injury
isotretinoin: brain, face, thymus, heart defects
tests during FIRST prenatal visit
CBC, blood type, rubella, VDRL, STD screen?? recheck