OBGYN Shelf Flashcards
which uterogenic drug do you not use on someone who is HTN and/or Pre-eclampsia
Methylergonovine – ergot alkaloid – potent smooth muscle constrictor
when is a B-lynch suture used?
post-partum hemorrhage; at time of laprotomy due to uterine atony
What are causes/ risk factors for a retained placenta (3)
- prior C section
- uterine leiomyoma
- prior uterine currettage and succenturiate lobe of placenta.
Immediately postpartum, there is excessive bleeding greater than 2000 cc. She has an IV in place. There are no lacerations and the uterus is found to be boggy. Which is the most appropriate next step?
Prostaglandin F2-alpha IM
It could also be injected directly into the uterine muscle. Prostaglandin F2-alpha should not be administered IV, as it can lead to severe bronchoconstriction. Oxytocin is administered as a short time, rapid infusion of a dilute solution (20-80 units in a liter) and not as an IV bolus/push. Misoprostol (800 to 1000 mcg) can be administered orally or rectally and is not administered IV or IM.
contradictions to estrogen/ candidates for progesterone- only pills (4)
use cation with progestins in patients suffering from what?
- history of thromboembolic disease
- women who are lactating
- women over age 35 who smoke
- women who develop severe nausea with combined oral contraceptive pills.
Progestins should be used with caution in women with a history of depression.
A person with exercised-induced amenorrhea has characteristicly what type of levels of FSH and estrogen?
Normal FSH
Low estrogen
Amenorrhea associated with exercise falls under what category of amenorrhea?
Hypothalamic amenorrhea
What STI presents as a viral-like symptom preceding the appearance of vesicular genital lesions?
How is it described?
HSV – DNA virus
Burning or itching may occur before the lesions appear.
With primary infections, dysuria due to vulvar lesions can cause significant urinary retention requiring catheter drainage.
Time line for post-exposure prophylaxis for Hepatitis B
- no later than 7 days after blood contact
- No later than 14 days after sexual contact
In unvaccinated: HBIG (hep B immune globullin) + HBV series.
If source is HBsAG negative or unknown then HBV series only.
If person is vaccinated and is a responder then no further tx is necessary. IF exposed person is vaccinated and a non-responder, then HBIG + HBV or HBIG times two doses is used.
Because incubation period for the virus is six weeks to six months, checking liver function and immunologic status at this time is not indicated.
treatment of PID in patient with fever, abdominal pain, nausea and vomiting
IV cefotetan or cefoxitin plus doxycycline
or
IV clindamycin plus gentamicin
Outpatient treatment for PID
ceftriaxone, cefoxitin, or other 3rd generation cephalosprins PLUS doxycyclin with or without metronidazole.
What must be considered in a patient who presents with low pelvic pain, urinary frequency, urinary urgency, hematuria or new issues with incontinence? What test can you do?
Urinary tract infection
Perform a urine analysis.
Nodularity in the back of the uterus is suggestive of what?
endometriosis
what are the two requirements to rule out endometrial cancer:
- tissue diagnosis consistent with normal endometrium
2. Pelvic U/S with endometrial stripe of
at what age can you consider premature ovarian failure?
What are FSH, LH, and FSH/LH?
before 40 yo
Increase in FSH, LH and FSH/LH >1 because FSH elevates more than LH
How much calcium must post-menopausal women intake in order to remain in zero calcium balance?
- 1200mg of elemental calcium
Calcium absorption decreases with age because of a decrease in biologically active vit D. A positive calcium balance is necessary to prevent osteoporosis. Calcium supplementation reduces bone loss and decreases fractures in individuals with low dietary intakes.
Effect of estrogen on lipid profiles
- increases TGs
- Increases LDL catabolism + Lipoprotein receptor = decreases LDL levels
- prevents conversion of HDL2 to HDL3 = increase HDL levels
why do postmenopausal women undergoing hysterectomy and bilateral salpingo-oophorectomy reexperience menopause.
menopausal ovaries are known to continue production of androgens, surgical removal of postmenopausal ovaries may result in resurgence of menopausal symptoms from the abrupt drop in circulation androgens.
Hypothalamic amenorrhea
Anorexia
Exercise induced
Stress: starvation, depression, chronic illness, stress
Marijuana use
Amenorrhea due to disorders of annovulation
- CAH (non classic)
- Cushing’s syndrome
- PCOS
Diagnostic criteria of PCOS (3)
- Oligo-anovulation
- Hyperandrogenism ( clinical and biochemical)– check total testosterone (>60ng/dL), free testosterone (more sensitive but more expensive) DHEA-S (when androgen-secreting tumor)
- Polycystic ovaries on ultrasound
- only require 2 out of 3
Health concerns of PCOS (7)
- diabetes (10%)
- Obesity
- Metabolic syndrome
- Cardiovascular disease
- Endometrial hyperplasia
- Infertility
- Depression
what is a normal post void residual volume (urine)
what is an elevated PVR?
50-60cc
> 300cc —> overflow incontinence: small amoumt of continuous leaking. Not associated with any positional changes or associated events.
what causes urge incontinence?
What is (genuine) stress incontinence?
What is mixed incontinence?
detrusor instability – contractions of detrusor muscle while bladder is filling.
loss of urine due to increased abdominal pressure in the absence of detrusor contraction. Usually due to urethral hypermobility
Increased intra-abdominal pressure causes the urethral-vesical junction to descend causing the detrusor muscle to contract.
in a patient that has vaginal prolapse what is the course of action?
Colpocleisis: procedure where the vagina is surgically obliterated and can be performed quickly without the need for general anesthesia.
Anterior and posterior repairs provide no apical support of the vagina. She will be at risk of recurrent prolapse.
She describes severe pain with penile insertion. On further questioning, she reports an inability to use tampons because of painful insertion. She also notes a remote history of frequent yeast infections while she was on antibiotics for recurrent sinusitis that occurred years ago. Her medical history is unremarkable, and she is on no medications. Pelvic examination is remarkable for normal appearing external genitalia. Palpation of the vestibule with a Q-tip elicits marked tenderness and slight erythema. A normal-appearing discharge is noted. Saline wet prep shows only a few white blood cells, and potassium hydroxide testing is negative. Vaginal pH is 4.0. The cervix and uterus are unremarkable. Which of the following is the most likely diagnosis in this patient?
Vulvar vestibulitis = severe pain on vestibular touch or attempted vaginal entry. Symptoms are abrupt onset and are described as sharp, burning, and rawness sensation.
TX: tricyclic antidepressents to block sympathetic afferent pain loops, pelvic floor rehabilitation, biofeedback, and topical anesthetics.
Surgery with vestibulectomy is recommended for patients who do not respond to standard therapies and are unable to tolerate intercourse.
What vulvar disorder has a perpetual itch-scratch-itch cycle? symptoms?
Lichen Simplex chronicus
symptoms: severe vulvar pruritis which can be worse at night.
Mucopurulent cervicitis (MPC)
- PE
- Causes
- Tx
mucopurulent exudate visible in endocervical canal or endocervical swab specimen.
caused by chlamydia trachomatis or Neisseria gonorrheae – however in most cases neither oragnism can be isolated.
Patient should be treated for both G/C. 125mg Ceftriaxone; Azithromycin.
Tx: azithromycin (1 dose) or doxycycline (7 days course) for chlamydia and cephalosporin or quinolone for gonorrhea.
Common findings seen in an anorexic patient: (6)
- osteoporosis
- Elevated cholesterol and carotene levels
- Cardiac arrhythmias (prolonged QT interval)
- Euthyroid sick syndrome
- Hypothalamic-pituitary axis dysfunction resulting in anovulation, amenorrhea, and estrogen deficiency
- Hyponatremia secondary to excess water drinking is often the only electrolyte abnormality, but the presence of other electrolyte abnormalities indicates purging behavior.
risk factors for cervical insufficiency? (5)
- prior gynecological surgery–LEEP or cone biopsy, elective abortions
- history of maternal obstetrical trauma
- DES exposure
- Multiple gestations
- hx of preterm birth or second trimester pregnancy loss are also risk factors
risk factors for abruptio placentae (4):
hx of maternal trauma
Chronic HTN
Maternal smoking
History of external cephalic version
risk factors for uterine rupture (4)
- multiparity
- advanced maternal age
- previous C/S
- myomectomy operations
risk factors for polyhydraminos
- fetal malformations/ genetic disroders
- maternal diabetes
- multiple gestation
- fetal anemia
what is the gold standard for evaluating the cervix for cervical incompetence in pregnancy?
What is the qualification for a short cervix?
What is the length of a short cervix at 23-28 wks?
Transvaginal ultrasound
cervical length below 10th percentile
Less than 25mm at gestational age 23-28wks
first line treamtnet for lichen sclerosus?
High potency topical steroids
- BID for 4wks
then swich to a less potent topical steroid or topical calcineurin inhibitor for maintenance therapy.
Treatment for genital warts
Cryotherapy
risk factors for uterine atony
- uterine overdistention: multiple gestations, polyhydramnios, macrosomia, increased parity.
- uterine fatigue (prolonged labor)
steps in managing of postpartum hemorrhage (4)
- fundal or bimanual massage – stimulates utuerus to contract and resolves hemorrage.
- Intravenous access
- Crystalloid infusion to keep systolic blood pressure > 90mmHG
- notification of blood bank for packed RBCs
Gonococcal Cervicitis
- clinical features
- Diagnosis
- Empiric treatment
Clinical features:
- Purulent or mucopurulent discharge
- Friable cervix with easy bleeding (friable – intramenstrual or postcoital bleeding)
- can lead to uveitis and PID
Diagnosis: nucleic acid amplification testing
Empiric tx: 3rd generation cephalosporin + azithromycin/ doxycycline
Chorioamnionitis (intraamniotic infection IAI)
- RF
- Diagnosis
risk factors: prolonged rupture of membranes >18 hrs.
Diagnosis: maternal fever and >/1 of the following: - uterine tenderness - Maternal or fetal tachycardia - Malodorous amniotic fluid - Purulent vaginal discharge
- amniotic fluid does not need to be purulent or malodorous to make the IAI diagnosis.
What test is used to measure the amount of fetal hemoglobin transferred into the maternal bloodstream?
When should it be used?
Kleihauer-Betke test
Perform on an RH negative woman with an RH positive fetus to determine the dose of RH immune globulin to prevent RH sensitization.
IF the patient’s blood type is RH + then the kleihauer-betke test is not indicated.
What is the beta- hCG level needed for ultrasound?
Above discriminatory zone: 2000mIU/mL
What is the progesterone level for a normal pregnancy?
> 25ng/mL
Progesterone level
criteria for diagnosis of ectopic pregnancy (3)
- fetal pole is visulaized outside of the uterus on ultrasound
- patient has a beta-hCG level over the discriminatory zone (level at which an intrauterine pregnancy should be seen on ultrasound– 2000) and No intrauterine pregnancy (IUP) seen on ultrasound
- Patient has inappropiately rising b-hcg
What is the most concerning complication for the baby of a type 1 diabetic mother?
Overt diabetic patients are at an increased risk for fetal growth restriction (although, macrosomia may also occur). This is true especially if patient has vascular complications (retinopathy).
Complications during pregnancy for a diabetic mother>
- polyhydramnios
- congenital malformations (cardiovascular, neural tube, caudal regression syndrome)
- preterm birth
- hypertensive complications
how do you treat thyroid storm in pregnancy? (4 main ones plus 4 others)
- thioamides (PTU)
- Propanolol
- Sodium iodide
- dexomethasone
O2
digitalis
antipyretics
fluid replacement
screening for gestational diabetes is done when and how for a normal risk patient?
How about for a high risk patient?
24-28 wks
50g oral glucose challenge followed by 100g oral glucose tolerance est.
asap (severe obesity and strong family history)
risks with mothers that have pulmonary hypertension? (2)
mortality > 25%
diminished venous return and RV filling
note: baby is not at increased risk of pulmonary hypoplasia or Marfan’s due to mother’s condition
What is the definition of intrauterine fetal demise (IUFD) (3) and what are some conditions that can cause it?
death of fetus in utero that occurs after 20 weeks gestation and before onset of labor.
- decrease fetal movements
- absent fetal heart sound
- a decrease in stagnation in uterine size.
- B-HCG levels may continue to be elevated.
- HTN disorders
- DM
- Placental and cord complications
- Antiphospholipid syndrome
- Congenital anomalies
- Fetal infections (TORCHE)
What test differentiates maternal from fetal blood in patients with vaginal bleeding?
Apt Test or Kleihauer-Betke test
Remedy for magnesium sulfate toxicity?
Stop magnesium sulfate infusion
Administer calcium gluconate
False labor (4) vs true labor (4)
False labor: 4-8 wks of pregnancy.
- absence of cervical change
- contractions are irregular and nonprogressive
- discomfort is in lower abdomen
- Discomfort relieved by sedation
True labor:
- Cervical change
- contractions are regular intervals that are progressive
- pain felt in back and upper abdomen and
- not relieved by sedation.
Severe features of preeclampsia (6)
BP >/ 160/110mmhg Thrombocytopenia ( 1.1mg/dL Elevated transaminases Pulmonary Edema New onset visual or cerebral symptoms
47 year old women, afebrile, with 7x6 cm area of edema and erythema without fluctuation is palpable. Scant non-bloody discharge is noted and several large axillary nodes are palpable. What is the next step in management?
Inflammatory breast carcinoma:
- brawny edematous cutaneous plaque with “peau d’orange” appearance overlying a breast mass.
- Aggressive tumor- lymph node involvement
- spontaneous nipple discharge in poste menopausal women
Tx: biopsy for histology and treatment depending on teh findings of histology
(hard to distinguish between breast abscess)
What is the diagnosis of a rubbery, firm, mobile and painful mass in a young patient who experience more tenderness during her menses?
What is the best approach in management after needle aspiration yields clear fluid?
Fibrocystic disease
Aspiration yields clear fluid and results in the disappearance of mass. Afterwards, patients are typically observed for 4-6 wks.
Risk factors for placenta abruption? (4)
HTN
trauma
Cocaine
smoking (poor placental perfusion)
lactation suppression (3)
- tight fitting bra
- avoidance of nipple stimulation or manipulation
- application of ice packs to the breasts and analgesics to manage pain.
There is no role for medications in the suppression of breast milk production
clinical diagnosis for endometritis (4)?
RF (4):
Treatment?
Fever
Uterine tenderness
Foul smelling lochia
Leukocytes
RF:
- prolonged ROM
- Prolonged labor
- Operative vaginal delivery (forceps)
- CS
Tx: broadspectrum b/c polymicrobial : clindamycin combined with IV aminoglycoside such as gentamicin
What are dysmorphic feature associated with maternal phenytoin/ carbamazepine use?
Fetal hydantoin syndrome
Fetal hydantoin syndrome is characterized by midfacial hypoplasia, microcephaly, cleft lip and palate, digital hypoplasia, hirsutism and developmental delay.
Signs of congenital syphilis?
- rhinitis (snuffles)
- Hepatosplenomegaly
- Skin lesions
- Hutchinson teeth
- Saddle nose
- Saber shins
- Deafness
- CNS involvement
What do you do if you have a finding of atypical squamous cells of undetermined significance on cytology (2)?
- women 21-24: repeat cytology in 1 year
- Women >/25: HPV DNA test
(+): Colposcopy
(-): followed with repeat Pap and HPV test in 3 years
** colposcopy is not usually performed unless the patient demonstrates ASC on 3 consecutive Paps, but colposcopy is recommended for atpical glandular cells, or high-grade squamous intraepithelial lesions.
Contraindications to external cephalic version (7)
When is it usually performed?
- indications for C/S (failure to progress during labor, non-reassuring fetal status)
- Placental abnormalities ( Placenta previa, abruption)
- Oligohydramnios
- ROM
- Hyperextended fetal head
- Fetal or uterine anomaly
- Multiple gestations
Performed at 37 wks getation and the onset of labor
Indications for prophylactic anti-D immune globulin administration for an unsensitized Rh negative pregnant patient?
- 28-32 wks gestation
- W/in 72 hrs of delivery of an RH-positive infant or a spontaneous, threatened, or induced abortion.
- Ectopic pregnancy
- Hydatidiform molar pregnancy
- Chronic villus sampling, amniocentesis
- 2nd or 3rd trimester beleding
- External cephalic version
- antepartum prophylaxis is not needed if the father is known to be Rh negative
GBS prophylaxis indications? (4)
Tx?
- Delivery at / 18hrs
- GBS bacteriuria in any concentration during current pregnancy
- Prior history of delivery of an infant with GBS sepsis.
Tx: first line: penicillin
- ampicillin, cefazolin, clindamycin, or vancomycin