Step 3 Q Bank q's Flashcards
Treatment of herpes zoster
acyclovir or valacyclovir x 7-10days, try to start within 72hrs of onset of rash
how is herpes zoster transmitted?
in the immunocompetent host, transmitted only via direct contact with the open lesions (in contrast to primary varicella aka chickenpox which is extremely contagious and transmitted through airborne droplets)
Preferred treatment for post herpetic neuralgia?
- Tricyclic antidepressants
- Topical Capsaicin cream
- Gabapentin
- Long Acting Oxycodone
Pathogenesis of idiopathic thrombocytopenia purpura?
platelet-specific autoantibodies, seen as sudden onset bleeding (petechiae, purport, epistaxis, and gingival bleeding), hx of infection
What are the three causes of failure to thrive?
- Inadequate calorie intake
- Inadequate calorie absorption
- Increased calorie requirements
When will you see low radioactive iodine uptake? 5 instances
- Silent thyroiditis
- Postpartum thyroiditis
- Surreptitious thyroid hormone abuse
- Iodine-induced thyroiditis
- subacute thyroiditis (de quervains)
treatment of choice for subacute thyroiditis
NSAIDs and beta blocker
genetic pathophys of MEN1
mutation of the tumor suppressive Menin1 gene
Characteristics of MEN1
- hyperParathyroidism
- ZES (gastrin-secreting Pancreatic tumor)
- Pituitary tumor (most common prolactinoma)
treatment of acne rosacea?
oral doxycycline
what is drug of choice for the immediate treatment of metoclopramide-induced acute dystonia?
IV diphenhydramine
Most common cause of acute renal failure in patients with cirrhosis?
hepatorenal syndrome (but must consider a diagnosis of exclusion)
treatment of choice for hepatorenal syndrome?
midodrine and octreotide + albumin
when should HIT be considered?
when platelet counts fall >50% from baseline 5-14 days after starting heparin
one major symptom of amiodarone?
causes thyroid dysfunction due to its high iodine content
two mechanisms by which amiodarone-induced-thyrotoxicosis may occur?
- Type 1: activation of grave’s disease
2. Type 2: destructive thyroiditis
positive antithyroid peroxidase antibodies
hashimoto’s thyroiditis
primary risk factor for the development of thyroid lymphoma?
preexisting hashimoto’s thyroiditis
major pathological feature of PSC
destruction of small and mid sized bile ducts
Antibodies seen in primary sclerosing cholangitis
antimitochondrial antibodies
antibodies seen in type I autoimmune hepatitis?
anti-smooth muscle antibodies
what can slow the progression of primary sclerosing cholangitis?
ursodeoxycholic acid (definitive treatment is w liver txp)
frequent complication of primary sclerosing cholangitis?
osteoporosis (due to decreased vitamin D absorbtion)
what are three EKG manifestations of severe hyperkalemia?
- Prolonged PR interval
- Widened QRS with sine wave pattern
- disappearance of p waves
what is the management of delivering babies w shoulder distocia?
BECALM Breath- don't push Elevate legs into sharp hip flexion Call for help Apply suprapubic pressure Large opening w episiotomy Maneuvers: deliver posterior arm, corkscrew, all fours, lastly- push it back in and C section
SLE + renal involvement, what do you need?
renal biopsy! there are 5 types of renal involvement and they all have different treatments, thus need bx to know which type
what do you measure to monitor disease activity in SLE patients?
serum complement or levels of anti-dsDNA
most common cause of nec fasciitis in patients who are otherwise healthy?
group A strep
two different types of necrotizing fasciitis?
I: seen in patients with underlying diabetes and PVD, polymicrobial
II: individuals with no concurrent medical illness, hx of laceration/blunt trauma/surgery i.e. group A strep
Treatment of multiple sclerosis?
acute exacerbation = IV corticosteroids or oral but use IV in patients w optic neuritis
long term: beta interferon
Contraindications of breast feeding (6)
- Active TB
- Maternal HIV
- Herpetic breast lesions
- Varicella infection active
- Chemotherapy or ongoing radiation
- Active abuse of alcohol or drugs
fungus infection in patients with DKA
think mucormycosis caused by Zygomycetes
Definition of arrest of labor in first stage
> 6cm cervical dilation, ruptured membranes, and one of the following:
- no cervical change in >4hrs despite adequate contractions OR
- no cervical change for >6hrs with inadequate contractions
definition of adequate labor
> 200-250 MVU (montevideo units)
long term complication of RSV in kids?
up to 30% develop reactive airway disease
antibodies associated with Sjogren’s syndrome?
Anti-ro/SSA & Anti-La/SSB
what is the schemer test?
used to confirm the diagnosis of keratoconjunctivitis sick, filter paper is placed along the lower eyelid and wetting of the paper is measured after a defined period. too little = abnormal tear production
- used to rule in or out sjogrens syndrome
focal submandibular mass in a patient with sjogrens syndrome
concern for B cell non hodgkins lymphoma
how does sjogre’s disease lead to B cell lymphoma?
sjogrens results in polyclonal B cell activation and infiltration of the salivary glands, this can go awry and lead to B cell lymphoma
Most common cause of postpartum hemorrhage?
uterine atony
treatment of choice for uterine atony?
oxytocin and fundal massage, oxytocin is a uterotonic medication
what is HELLP syndrome?
hemolysis, elevated liver enzymes, and low platelet count
accounts for 20% of thrombocytopenia in pregnancy, ominous variant of preeclampsia
what is principal cause of infertility in patients with PCOS?
anovulation, weight loss can restore ovulation
definition of preeclampsia?
new onset hypertension (SBP>140 and/or DBP >90) at >20wks AND proteinuria or signs of end-organ damage
What are 6 severe features of preeclampsia?
- SBP >160 or DBP >110 on 2 occasions >4hrs apart
- Thrombocytopenia, plt 1.1 or doubling
- Elevated transaminases
- Pulmonary Edema
- New-onset visual or cerebral symptoms
what is the most troubling known complication of subchorionic hematoma?
spontaneous abortion
treatment of BV?
- course of oral metronidazole or clindamycin
2 complications of bacterial vaginosis?
- Increased risk of preterm birth
2 Increased risk for acquisition of HIV, HSV2, G,C and trichomonas
Define: cohort study
a population is observed over time, grouped based on exposure to a particular factor and watched for a specific outcome, use RR
Define: case control study
retrospective study involving a group of people with a given disease and otherwise similar group of people without the disease who are compared for exposure to risk factors, use OR
when do you perform the triple marker screen/quad test?
between 15-20 weeks gestation
whats the difference between a quad screen and triple and whats included in them?
triple: AFP, estriol, b-HCG
Quad: adds inhibin-A, more sensitive to downs
how do you treat magnesium toxicity in moms treated for preeclampsia?
IV calcium gluconate
AFP is increased on triple marker test, what is it?
neural tube defect!
what do you see on triple marker test for trisomy 18?
decreased everything- AFP, estriol, b-HCG
what do you see on triple marker test for trisomy 21?
decreased AFP and estriol, increased b-HCG
whats all included in a biophysical profile? BPP
Test the Baby, MAN! Tone Breathing Movements Amniotic fluid volume Nonstress test - give 2 for normal and 0 for abnormal
what is a negative test on the BPP? a positive?
negative = score 8-10, positive = score
what is a risk factor for chorioamnionitis?
Prolonged Rupture of Membranes