Abnormal uterine bleeding Flashcards

1
Q

What is the differential diagnosis for AUB?

A

pregnancy (also pregnancy + mole/GTN)
Leiomyoma
Adenomyosis
Significant adhesive disease giving impression of large uterus
Adnexal mass
Uterine malignancy

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2
Q

What is the management of symptomatic leiomyomas?

A

eval: H&P, pelvic exam, labs (CBC, hcg, tumor markers if adnexal mass suggested), TVUS, possible CT/MRI, endometrial sampling if indicated (imaging shows intracavitary mass, do hysteroscopy w/ sampling)

  • Hormonal menstrual regulation: OCPs, vaginal ring, transdermal patch, depo provera, IUD, GnRH antagonist + add-back for 2yrs
  • oral TXA (anti-fibrinolytic): avoid if seizures, recent CVD.
  • GnRH agonist (leuprolide/lupron): amenorrhea, 50% size reduction in 3mo, only 1yr use due to osteoporosis. IM monthly for 2-3 doses. short term use doesn’t require add-back.
  • UAE (reduce pain/pressure sx and blood flow/myoma size. avoid if future fertility or postmenopausal)
  • Myomectomy
  • Hysterectomy
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3
Q

What are GnRH-receptor antagonists

A

Elagolix/E2/NE (BID) and relugolix/E2/NE-MyFembree (daily)
E2=estradiol. NE=norethindrone.

  • formulated with low-dose steroidal add-back to limit hypoestrogenic side effects (hot flushes, HA, nausea, night sweats)

ADD-BACK: Oral conjugated estrogen 0.625 and norethindrone acetate 2.5mg daily

  • used for fibroid-related AUB and endometriosis.
    can use for 2yrs.
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4
Q

What is the counseling for uterine artery embolization?

A

embolic agent delivered through catheterization of both uterine arteries to cause leiomyoma devascularization and involution.

  • Benefits: shorter hospital stay, avoid hyst (re-intervention rate 15%), reduce HMB, fibroid sx. decrease size, dysmenorrhea, bulk symptoms.
  • Risks: complications, insufficient data on future fertility, can cause ovarian failure, because no histology cannot r/o malignancy (avoid in menopause).

Complications:
- unplanned hyst (2/2 uterine perforation w/ organ injury or uterine artery perforation/hemorrhage)
- rehospitalization (Bacteremia from arrteriotomy or myometritis)
- ovarian failure
- PE
- Fever 2/2 myoma degeneration or bacteremia from puncture site
- Bleeding/hematoma at arterial puncture site
- Myometrial necrosis
- Perforation of uterine artery w/ intraperitoneal bleeding or broad ligament hematoma
- Perforation of uterus by catheter w/ possible bowel injury.

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5
Q

Who is a candidate for supracervical hysterectomy?

A
  • no prior cervical dysplasia
  • no prior abnormal pap
  • not if needing hyst for unknown cause of bleeding
  • no prior gyn malignancy or EIN
  • pt s/p counseling on potential for future cervical disease and need for cervical cytology screening, and no clear medical benefit to cervical preservation

need to cauterize endocervical canal to avoid cyclic bleeding (menstrual shedding of endocervical tissue in upper canal). If comes back w/ bleeding, refer to gyn onc for vaginal trachelectomy (risk of ureteral injury).

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6
Q

How to counsel on route of hysterectomy?

A
  • Vag hyst is best approach
  • Abdominal hyst appropriate when eval of pelvis for disease necessary (need to palpate tissues) or malignancy suspected
  • LSC approach appropriate if vag hyst not appropriate and inadequate vaginal exposure for TVH, benign uterine mass too large for TVH, adnexal surgery required, pelvic adhesive disease, prior pelvic surgery w/ expected adhesive disease.
  • recommend diag lac initially appropriate (to still try to do TVH).
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7
Q

What do you do if large uterus doesn’t fit through Pfannenstiel incision?

A
  • extend pfannenstiel incision to release more lateral abdominal wall tissues (be careful of superficial epigastric vessels)
  • Cherney modification of incision :incise lower rectus muscle just at tendon above its attachment to symphysis. risk of injury to inferior epigastric vessels.
  • Maylard modification of incision: rectus muscle-splitting to either side. DO NOT separate muscle from fascia. ligate inferior epigastric vessel above and below muscle splitting.
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8
Q

What is the differential diagnosis of AUB?
What is the workup?

A

PALM-COEIN (structural=PALM-hyperplasia, non-structural COIEN - not classified)
- C=coagulopathy (vWD, platelet abnormalities)
- O-anovulatory dysfunction (perimenopause/adolescenec/pregnancy), hyerandrogen (PCOS, CAH), hypothalamic (anorexia, athlete), hyperPRL, hypothyroid
-I=iatrogenic (chemo/RT, Coumadin,ASA)
***also think atrophy, STI, foreign body, trauma

Workup:
-pap
- labs (CBC, TSH, HCG, screening for bleeding disorders when indicated, chlamydia if indicated), endometrial sampling if appropriate
- imaging: US, saline sonogram, hysteroscopy, MRI

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9
Q

What is the management of acute AUB?

A

Medical
- Hormonal (OCP or progestins, vaginal ring, depo provera, progestin IUD, GnRH agonist if fibroid related)
- if acute: IV estrogen or OCP taper
- If vWD: ddAVP, desmopressin
- TXA (1300mg TID x 5d)
- Provera (20mg TID for 7d, stops within 3 days)
- NSAIDs

Surgical
- D&C
- hysteroscopy, polypectomy,
- - endometrial ablation (if doesn’t desire pregnancy and no intracavitary mass present)
- myomectomy or hysterectomy

  • if due to anovulation (endocrine prob), tx=medical. if fail medical, do hyst NOT ablation bc incr risk for endometrial hyperplasia. ablation can mask symptoms/make future attempts at sampling harder*
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10
Q

What are indications for endometrial ablation?

A

INDICATIONS
- management of HMB, pre-menopausal, NORMAL endometrial cavity, no future fertility, failed conservative medical management.

**MUST do endometrial sampling before.
** associated with failure rate: large cavity size, adenomyosis, grand multiparty, young age.

** if certain risk factors for endometrial cancer, AVOID. i.e. obesity, chronic anovulation/PCOS, extended tamoxifen use, hx Lynch syndrome.

*still need contraception!

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11
Q

What are contraindications for endometrial ablation?

A
  • endometrial hyperplasia or carcinoma
  • active pelvic infection
  • prior procedures which thin myometrial wall/incr risk perforation (myomectomy, classical CS)
  • current pregnancy
  • congenital uterine anoamlies
  • endometrial cavity size limitations
  • desires future fertility

RELATIVE CONTRAINDICATIONS
- ovulatory dysfunction (ablation can mask future sampling, they’re at risk for endometrial hyperplasia)
- obesity
- tamoxifen use
- pt desires amenorrhea
- young age (higher failure rate if <35)
- acute anteversion/retroflexion

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12
Q

What are benefits and complications of endometrial ablation?

A

-success rate is 80%!!! 40% will have amenorrhea.
- preserves uterus, quick, easy recovery, office/outpatient surgery, lowers risk of endometriosis, improves dysmenorrhea

RISKS:
- 15% failure rate
- inability to evaluate uterus afterwards
- can cause cervical stenosis and hematometra
- uterine perforation
- pain (Cramping, vaginal discharge)

Late onset endometrial ablation failure
- recurrent vaginal bleeding, new cyclic pelvic pain, post-ablation inability to adequately sample endometrium.

Post-ablation tubal sterilization syndrome:
- pain 2/2 corneal menstrual bleeding blocked by ligated proximal fallopian tube.

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13
Q

What is a normal menses?

A

occurs q21-35 days and comprises <80 cc in volume.

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14
Q

What is the indication for an endometrial biopsy?

A

Post-menopausal w/ any bleeding
Post-menopausal w/ endometrial lining >4 mm or an endometrium that is not adequately visualized

45+ w/ AUB

< 45 if:
- exposure to unopposed estrogen (PCOS, obesity)
- persistent AUB
- failure of medical management
- high risk endometrial cancer (Lynch)

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15
Q

How does the progesterone IUD work to decrease bleeding from fibroids?

A

The levornorgestrel progestin released by the IUD stabilizes the endometrial proliferation induced by estrogen. If the fibroid is small and submucosal, the IUD may help to shrink the fibroid, thereby decreasing menstrual bleeding

Most women with levornorgestrel-releasing IUD continue to ovulate and have physiologic levels of estrogen, unlike DepoProvera, which suppresses estrogen production and ovulation. Therefore, loss of bone mineral density is not a concern with the levornorgestrel-releasing IUD.

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16
Q

What is differential for AUB if age 13-18

A

Anovulation 2/2 immature hPO axis
Hypothalamic dysfunction (Stress, exercise, eating disorders)
Coagulopathies
Hormonal contraceptives
Infections
Pregnancy
Tumors

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17
Q

What is differential for AUB if age 19-39?

A

pregnancy
Anovulation (PCOS)
Anatomic lesions (Fibroids/polyps)
HOrmonal contraceptives
Hyperplasia/malignancy

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18
Q

What is differential for AUB if age 40+

A

Pregnancy
Anovulation w/ declining ovarian function
Fibroids
Hyeprplasia/malignancy
Atrophy

19
Q

What is treatment for AUB due to acute/severe bleeding?

A
  • IV Premarin (Estrogen) 25mg q4h up to 6 doses, stops within 8 hrs. 88% will stop bleeding in <3 days.
  • OCP taper with Ortho Novum
    – 35 ug one tablet TID x 3d then BID x3d, then daily
    Progestin (20mg TID then 20mg daily)
    TXA 1300mg TID x5d
    Uterine curettage if medical therapy fails to eval for hyperplasia
20
Q

Who are good candidates for menstrual suppression and what are methods?

A

adolescents
physical/cognitive disability
decreased access to health care
Transgender
military
incarcerated/homeless
athletes

Methods: combined OCPs, patches, rings, POPs, depo provera, progesterone (levonorgestrel) IUD, etonorgestrel implant.

Workup: history, confirm no drug interactions right other meds. don’t do in adolescents prior to menarche. GnRH agonists for short-term therapy (bone density concerns) for transgender. breath through bleeding common, wait 3-6 months before starting meds for breakthrough bleeding.

21
Q

What are strategies for breakthrough bleeding?

A
  • estrogen containing OCPs. 20mcg dose has higher BTB rates than higher dose OCPs.
  • progestin only methods: norethindrone, norethindrone acetate, drospirenone
  • depo provera: 150mg IM
  • levonorgestrel IUD: 52mg amenorrhea is 50% at 1 year. can have BTB still but manage w/ POP or continuous OCP
  • etonorgestrel implant 68mg - high rates menstrual irregularity. good for 5 yrs.
22
Q

What is a normal menstrual cycle?
Describe the stages of the menstrual cycle

A

28-35d, 14-21d of follicular phase, 14d of luteal phase. Variability of cycle btw 21-40 is normal.

Lasts 28-35d
Bleeding for <8days
Normal volume is subjective, but <80mL per cycle and doesn’t interfere with QOL, social, emotional.
3 phases: follicular, mid-cycle surge and ovulation and luteal
1. Follicular: starts w/ onset menses and ends day before ovulation. Follicle grows and produces estradiol.
Ovary is the least hormonally active: low estradiol and progesterone. GnRH pulsatility increases FSH which stimulates follicle.
2. Mid-cycle surge/ovulation: LH surge triggers ovulation. Follicle releases mature oocyte. Remaining cells in follicle become corpus luteum
Ovulation occurs: Oocyte released from follicle 36hrs post LH surge.
3. Luteal phase: starts after ovulation and ends at onset of next menses. Corpus luteum secretes large amounts of progesterone.
Corpus luteum secretes inhibin A.

23
Q

48yo w/ irregular menses and hot flashes. What is differential and how do you evaluate?

A

Detailed H&P, any sx of thyroid dysfunction.
- Physical exam: abdominal + pelvic exam w/ bimanual exam (palpate any adnexal masses).
- Labs: upreg, CBC, TSH, prolactin. EMB, pelvic US.
Differential: pregnancy, carcinoma, atrophy, endometrial hyperplasia, thyroid disease, leiomyoma

24
Q

What percent of gyn consults are for AUB in peri/post-menopausal years?
How do you define menopause?

A

70%.

Absence of menses for 12 mo period

What was the most significant finding in WHI? 1st study to show that any pharmacologic management reduces the risk of fracture.

25
Q

What is the most effective treatment for menopausal sx?

A

HRT. oral micronized progesterone (100mg qd)+ transdermal estrogen transdermal 0.05 mg/day.
- If no uterus, then just transdermal estrogen.

26
Q

How likely is a patient to have recurrent VMS upon discontinuation of HRT?

A

When discontinued, 50% will have recurrent VMS. Doesn’t matter whether abrupt discontinuation or taper, age at discontinuation and length of HRT doesn’t matter.

At what age do you need to discontinue HRT? Age 65.

27
Q

What is differential for 15 year old w/ HMB?

A

Anovulatory bleeindg
Bleeding disorder (check PT/PTT, plus, bleeding time)
pregnancy - HCG
Thyroid disease- TSH
- hyperprolactinemia
PCOs
mental stress/eating disorders
Vaginitis
STI
hepatic failure
malignancy
uterine lesion
meds

Eval: CBC, coals, von willebrand assay (vWF, factor 8), TSH, PRL, HCG, US
- Discuss menstrual suppression w/ depo, Nexplanon or levonorgestrel IUD.

28
Q

What is the effect of depo for HMB on bone density?

A

bone density recovers upon cessation of med
- need adequate calcium and vitamin D, exercise regularly, avoid smoking and alcohol
- maybe do alternative if lots of rF for osteoporosis

29
Q

What is von willebrand disease?

A

1-2%, most common genetic bleeding disorder
- AD (type 1): most common, low VWF
- AR (type 3): absent or severely low VWF (most severe, rare)
- AR/AD (type 2): dysfunctional VWF

Screen w/ CBC, coags, ristocetin cofactor activity level for vWF, vWF Ag, factor 8

vWF=glycoprotein that plays a part in hemostasis. functions as a carrier for factor VIII to maintain its levels and help in platelet adhesion and binding to endothelial components after a vascular injury.
- VWD is qualitative or quantitative deficiency of vWF

30
Q

Who should you screen for vWF and what is treatment?
What is management on L&D?

A
  • adolescent w/ HMB prior to starting OCPs
  • adults w/ HMB
  • pt undergoing hyst for HMB (avoid post op complications)
  • hx excessive bleeding (Dental work, PPH, surgery)

Treatment:
- OCPs, levonorgestrel IUD
- desmopressin (synthetic derivative of antidiuretic hormone (ADH) which stimulates the release of vWF stored in the endothelial cells)
- antifibrinolytics (TXA)
- AVOID NDSAIDS, ASA

  • OB: NO vacuum, FSE, circumcision if maternal vWD. hematoma risk w/ epidural, incr risk PPH. manage w/ hematologist.
31
Q

What does disordered proliferative endometrium on EMB results suggest?

A

recent anovulatory state w/ loss of cyclic endometrial synchronicity
- can occur in years preceding menopause, often followed by return to regular ovulatory cycling

  • observation ok. If troublesome, low dose OCPs, POPs, Mirena IUD
32
Q

What does chronic endometritis on EMB suggest?

A

nonspecific inflammatory response DOES NOT necessarily mean infection present.
- 2/2 infections (chlamydia,, TB, mycoplasma), foreign body, leiomyoma, polyp, radiation therapy, idiopathic (1/3 of cases)

  • Tx: empiric antimicrobial therapy improves sx (doxy 100mg BID 10-14d).
33
Q

What types of ablative techniques are available for endometrial ablation?

A
  • Thermal
  • Cryoablation - least painful
  • Radiofrequency (Novasure)
  • Microwave
34
Q

What is classification of fibroids and what is management for SUF?

A

0=submucosal
1=< 50% intramural
2=> 50% intramural
3=100% intramural, touches endometrial
4= intramural
5=subserosal > 50% intramural
6=subserosal <50% intramural
7-subserosal pedunculated
8=other

ddx: TVUS, SIS, hysteroscopy to distinguish fibroid type.
Tx:
- meds (GnRH antag, LNG-IUD, OCP, TXA). GnRH agonist (6 mo without add back, 1 mo with add back, regrowth within 3-9mo of cessation)
- surgery
- expectant management
- UAE
- radio frequency ablation (coagulative necrosis of targeted myomas, unclear effect on fertility)
- myomectomy: dilute vasopressin if LSC. IF do lsc, 5x incr risk conversion to open approach compared to robotic.
- hyst.

35
Q

Contraindications to IUD?

What are differences in the progestin-containing IUDs available?

A

severe distortion of cavity, pregnancy, unexplinaed bleeding, Wilson’s disease, breast cancer.

Pros and cons of different IUDs: copper=HMB. Levonorgestrel: abnormal bleeding profile.
Patch contains Norgestrel? Less effective in obesity.

Contain different amounts of Levonorgestrel. Kyleena and Skyla containing lower amounts.
- Mirena good for 8 years. 52mg Levonorgestrel. 20-40% amenorrhea
- Kylena good for 5 years. 19.5mg Levonorgestrel. 15%
- Skyla=smallest. Good for 3 years. 13.5 mg. 10% amenorrhea.

36
Q

Contra-indications to contraception?

A

Smoker> age 35, migraines w/ aura - OCP

OCP: smoker >35, migraines w/ aura, active breast cancer, VTE, liver disease, diabetes w/ microvascular disease.

37
Q

How would you counsel 19 y/o on contraceptive options?
What are the 5P’s?

A

5 Ps: Partners, Practices, Protection from STDs, Past history of STIs, and Prevention of pregnancy

Hormonal:
- Pill (OCP/POP)
- patch
- ring
- depo
- Nexplanon
- IUD (Treats endometrial hyperplasia nd pelvic pain)

Non-hormonal:
- Paraguard

  • permanent sterilization.
38
Q

What are types of OCPs?
What is the ideal type of OCP?
What is mechanism of action?

A

combined estrogen/progestin or progestin-only (more for breakthrough bleeding)
- can be monophonic or triphasic (how many types of hormones it has), cyclic, extended cycle.

COC with 35 mcg of ethinyl estradiol (ideally) or less
Progestin with 1mg norethindrone acetate
- suppress ovulation by inhibiting GnRH
- estrogen suppresses FSH (inhbiiting follicle development)

Continuous or extended cycle better for pelvic pain

Tri-lo sprintec=multiphasic (Norgestimate in mg, ethinyl 25 microgram) - active tablet for 21d, Fe for 7d - for ACNE
Loestrin (1/20) - active tablet for 21d, Fe for 7d

39
Q

What are non-contraceptive uses for OCPs?

A
  • pelvic pain
  • HMB
  • ovarian cysts
  • hyperandrogenism
  • pCOS
  • ovarian cancer reduction
40
Q

What is menorrhagia:
What is metrorrhagia?
What is polymenorrhea?
What is oligomenorrhea?

A

> 80cc/menses

Intermenstrual bleeding

Cycles more frequent that q28d

Cycles less frequent than q35d

41
Q

What are advantages and disadvantages of GnRh agonists?

What are other uses for GnRh agonists?

A

Decrease size and bleeding.

DISADVANTAGES:
-Hypoestrogenic sx: hot flushes, night sweats.
- Make fibroids softer and make surgical plane less distinct.
- Decrease bone mineral density. Need addback: Oral conjugated estrogen 0.625 and norethindrone acetate 2.5mg daily

OTHER USES:
endometriosis, precocious puberty.

42
Q

What is adenomyosis?
What are causes, risk factors?
What are US findings?
What is treatment?

A

endometrial glands/stroma present in myometrium.

Causes: unknown, pregnancy, myometrial weakness.

RF: age, black race, obesity, increased parity, uterine trauma from childbirth

US findings: bulky, globular uterus. Thickened myometrial wall, small myometrial cysts.

Tx: OCP, progestins, mirena IUD, hyst.

43
Q

What is the WHO medical eligibility criteria for contraceptives?

A

Category 1: No restrictions on use
Category 2: Generally use, but careful follow-up may be required
Category 3: Risks>advantages, use if no other options
Category 4: Should not be used