Ob/Gyn APGO Flashcards
abnormal pap test results… whats the best next step in management?
colposcopy
- also do reflex HPV testing for high-risk HPV types
- if negative then do repeat testing in one year
whens the earliest indication to give a pt a pap smear?
21 years old regardless of coitarche
cervical cancer screening for women ages 30-65
-whats special about pts ages 21-24
cytology and HPV cotesting every 5 years (preferred)
or
cytology alone every 3 years (acceptable)
-no need to HPV test alone
- pts 21-24 –> considered a special population are ususally positive for HPV and end up clearing it anyways so its not worth it to test them for HPV
- do expectant management and repeat cytology alone in 12 months if a pt does test positive for HPV
pt with lower abdominal pain, adenexal pain/tenderness, fever, cervical motion tenderness, and vaginal discharge
pelvic inflammatory disease (usually caused by chlamydia and gonorrhea)
gold standard to diagnose herpes
culture: highly specific not super sensitive (false negative 10-20% of the time)
best to culture very early in course
how often do you screen for colon cancer in a pt with average risk
start screening at age 45-50
- yearly hemoccult testing
- flexible sigmoidoscopy every 5 years
- colonoscopy every 10 years
if pt has a first degree relative with colon cancer before age 60 then screen at age 40 or 10 years before dx of their relative and repeat every 5 years
DEXA test
used to test for bone mineral density… specifically in women who show signs of osteoporosis prior to age 65
what age should annual mammograms start for women?
40
how much folate should you give a woman of reproductive age
daily 400 microgram supplement
note: non-high risk pts get at least 0.4mg/day
high risk pts (pts with neural tube defect in previous pregnancy) get 4mg/day
what are the normal physiologic changes to lung capacities during pregnancy
increases: inspiratory capacity (due to increases in tidal volume and inspiratory reserve volume)… minute ventilation also increases –> responsible for respiratory alkalosis in pregnancy
respiratory rate does not change
decreases: functional residual capacity
why are pregnant pts more likely to get pulmonary edema
decreased plasma osmolality
sickle cell anemia prevalence in black pts and how to test for it in a pregnant pt
1/500 (autosomal recessive)
carrier state is found in 1/10 blacks
*test for this and all other hemoglobinopathies via electrophoresis
mediterranean populations are most at risk for what
beta-thalassemia
ashkenazi jews are at risk for what
fanconi anemia, tay-sachs, neimen pick, cystic fibrosis (all are autosomal recessive)
what is the best test for trisomy 21 and 18
cell free DNA screening with a detection rate of over 99% at 0.2% false-positive rate
most common form of inherited mental retardation
fragile x
most reliable method for confirming gestational age
dating ultrasound (specifically during the first trimester)
what do you expect to see in a pt with pre-existing diabetes vs gestational diabetes
pre-existing –> intrauterine growth restriction
gestational diabetes –> shoulder dystocia, metabolic disturbances, preeclampsia, polyhydramnios, and fetal macrosomia
short in duration and less intense contractions associated with pain in the lower abdomen/groin
braxton-hicks contractions
how will a pregnant pt with dehydration present
maternal tachycardia and ketonuria
why would you do a nitrazine test
confirm rupture of membranes of if a pt is unsure about leakage of fluid
what do you do if the pt has an umbilical cord prolapse?
immediate c-section (even if the mom and baby both seem totally fine)
what is the single greatest risk factor for 3rd and 4th degree lacerations
median episiotomy
insufficient power of contractions
< 240 Montevideo units
give ptosin if this occurs
type 1 diabetic… what do you expect to see with the baby
small and hypoglycemic baby
fetal tachycardia and minimal variability
septic infant
treatment for sheehan syndrome?
estrogen and progesterone replacement and supplementation with thyroid and adrenal hormones
what is the best positioning for breast feeding
mom and baby being belly to belly
how does candida of the nipple present
- sore nipples and burning thats worse with breastfeeding
- tips of nipples are pink and shiny with peeling at the periphery
- make sure to check the babies mouth for candida and treat both mom and baby
what are the signs that the baby is getting enough breast milk
3-4 stools in 24hrs
6 wet diapers in 24hrs
weight gain
sounds of swallowing
what are the three ways an ectopic pregnancy can be diagnosed
- fetal pole is visualized outside the uterus on ultrasound
- the patient has a b-hCG level over the discriminatory zone (2,000 to be seen on ultrasound) and no intrauterine pregnancy is seen on ultrasound
- the patient has inappropriately rising b-hCG level (less than 50% increase in 48hrs) and has levels that do not fall following diagnostic dilation and currettage
signs of a ruptured ectopic pregnancy
- hypovolemia (tachycardia and hypotension)
- peritoneal signs (rebound, guarding, and severe abdominal tenderness)
- positive pregnancy test
*if you see a pt with this then perform a laparoscopy
most common abnormal karyotype that causes a spontaneous abortion
autosomal trisomy
most common cause of sepsis in pregnancy
acute pyelonephritis
how to treat a pregnant lady with thyroid storm
thioamides (PTU), propranolol, sodium iodide, and dexamethasone
*do not give radioactive iodine cause it may concentrate in the fetal thyroid and cause congenital hypothyroidism
gestational diabetes screenings
universal screening done for everyone between 24 and 28 weeks
-but for high risk pts you can screen them at their first visit
- 50g 1hr oral glucose challenge test
- diagnostic 100g 1hr oral glucose tolerance test if initial results exceed a predetermined plasma glucose concentration
OR
- just do a 75g 2hr oral glucose tolerance test
obese pregnant pts have a higher risk of what
increased maternal morbidity due to
- chronic hypertension***
- gestational diabetes
- preeclampsia***
- fetal macrosomia
- higher rate of c-section
- higher rate of postpartum complications
which depression med is contraindicated in pregnant pts
paroxetine (SSRI) –> other SSRIs are ok
-increased risk of fetal cardiac malformations and persistent pulmonary hypertension
whats the next step in a pregnant pt with suspected appendicitis
graded compression ultrasound
when is the “best” time to get varicella infection during a pregnancy
first trimester –> lowest risk of congenital anomalies
*give them oral acyclovir 5x/day for 7days
classic signs of magnesium toxicity
muscle weakness
loss of deep tendon reflexes
nausea
respiratory depression (11mEq/L)
*if mag is given in very high doses (15mEq/L) cardiac arrest is also possible
definitive treatment for preeclampsia
delivery of baby and placenta
what is a major indicator for delivery in a pt with preeclampsia/HELLP syndrome
thrombocytopenia (< 100,000)
define HELLP syndrome
hemolysis
elevated liver enzymes
low platelets
third trimester bleeding and fetus in tachysystole with evidence of fetal anemia
abruptio placentae
-hypertension and preeclampsia are risk factors
what is the goal for a pregnant pt with hypertension
not a normal blood pressure but into a safer range of diastolic 90-100 mmHg
*to prevent maternal stroke or abruption
risk factors for developing preeclampsia
parity family history obesity chronic hypertension chronic renal disease*** strongest factor
what non-invasive test can detect severe anemia
middle cerebral artery peak systolic velocity via doppler ultrasonography
lewis antibodies
IgM (does not cross the placenta)
-not associated with isosensitization or hemolytic disease of the fetus
memory device for certain antibodies: lewis lives, duffy dies, kell kills
ultrasound markers for twins
- dividing membrane thickness more than 2mm
- twin peak (lambda) sign
- different fetal genders
- two separate placentas (anterior and posterior)
twin infant death rate is how many times higher than singletons
5x higher in twins
-incidence of congenital anomalies is also increased
how can you try to avoid premature twin births
adequate weight gain in the first 20 to 24 weeks can reduce the risk of premature, preterm, low-weight babies
most accurate way to date a fetus that may already be dead
femur length cause long bone measurements are most reliable
uncontrolled diabetes during organogenesis
associated with high rate of birth defects (usually spine and heart affected)
what does a cone biopsy increase the risk of in a pregnant patient
cervical incompetence/insufficiency