Random UWorld 8/8/17 Flashcards
65yo lady with 6 mos worsening dry cough and dyspnea. dry late inspiratory crackles and digital clubbing on exam. diffuse reticular or nodular opacities on cxr, fibrosis honeycombing traction bronchiectasis on high resolution ct, no identifiable environmental infectious or autoimmune cause
daignosis
pft pattern
pulmonary fibrosis due to ILD interstitial lung disease … call it IPF idiopathic pulmonary fibrosis when no identifiable environmental infectious or autoimmune cause found
restrictive pft pattern!
trial of labor ok or contraindicated with history of the following
- low transverse csection
- classical vertical csection
- abdominal myomectomy without uterine cavity entry
- abdominal myomectomy With uterine cavity entry
low transverse CS - trial of labor ok
Classic Vertical CS - No trial of labor, contraindicated
myomectomy without entry - trial of labor ok
myomectomy With Entry - No trial of labor, Contraindicated
Terbutaline is a ___ adminstered to relax the ___
Terbutaline is a Tocolytic to relax the Uterus when contractile abnormalities occur (tachysystole, tetany)
Amnioinfusion involves what to treat what
Aminoinfusion - catheter insertion for intrauterine infusion - to relieve umbilical cord compression and resolve variable decels
young guy with unprovoked DVT/PE and family history with normal pt ptt but high DDimer
suspect
why
pathophys
Factor V Leiden
Most Common inherited hypercoagulable disorder in Whites
Activated Protein C Resistance - factor V mut (autosomal dominant but homo worse off than hetero) resists protein c and activates thrombin… thus clotting without pt or ptt changes
endometrial biopsy indications
over 45yo
under 45yo
over 45 if abnormal uterine bleeding or postmenopausal bleeding
under 45 if abnormal uterine bleeding AND unopposed estrogen or lynch syndrome hnpcc or failed medical management of uterine bleeding
TF
ocp or cyclic progestin or continuous progestin are appropriate tx for premenopausal abnormal uterine bleeding after uterine cancer ruled out
T
all works to differentiate endometrium prevent unopposed estrogen uterine proliferation
solitary painless firm mobile breast mass 2cm in size noted on breast exam and mammography
diagnosis
fibroadenoma
placenta accreta typically only occurs in patients with history of __ __ or __
placenta accreta usually only if history of CSection Myomectomy or DandC
in treating inverted uterus, placental removal and uterotonics should be given After __
after reduction of the uterus
immunocompromised patient with fever pleuritic chest pain hemoptysis, CT with nodules with surrounding ground glass opacities
diagnosis
name for ct finding
treat
pulmonary aspegillosis
“halo sign” - nodules with surrounding ground glass opacities
voriconazole and caspofungin (an echinocandin)
CMV pneumonitis
3 symptoms
ct finding
hemoptysis? chest pain? productive cough? nodules with halo sign (surrounding ground glass opacities)?
CMV PNA
low fever, dry cough, sob
patchy or diffuse ground-glass opacities on ct
NO hemoptysis cp sputum halo signs… think more aspergillus there
immunocompromised patient, dyspnea, nonproductive cough, fever, bilateral diffuse interstitial infiltrates on imaging
think what opportunistic bug?
PCP pneumocystis pneumonia
immunosuppressed patient, fever hemoptysis dyspnea upper lobe disease… thick sputum and nodules with surrounding ground glass opacities (halo sign)
what makes you think reactivation of TB and what doesn’t?
fever hemoptysis dyspnea upper lobe disease immunocompromise…. TB or aspergillus
thick sputum, nodules with surrounding ground glass opacities (halo sign) …. more aspergillus
guy on PPI with burning chest pain for 15 minutes per episode when lifting things at work… work him up for ulcers or angina?
Atypical Angina
get an Exercise EKG
only after ruling out angina can you go after gerd and ulcers
tf
absent achilles reflexes can be normal in elderly
t
ear pain worse with chewing, history of teeth grinding while sleeping, no ear tenderness on exam or otoscopic abnorms
diagnosis
treatment
temperomandibular joint dysfunction
nighttime bite guard, surgery if refractory
Herpes Zoster infection that causes Bell’s Palsy with vesicles on the outer ear, aka
Ramsay Hunt syndrome
pathophys of flushing and pruritus side effect of niacin
treat
Prostaglandin-induced peripheral vasoDilation
treat with low dose Aspirin 30 min before taking Niacin
10-20 days after throat or skin infection - periorbital swelling, hematuria, oliguria, hypertension - hematuria with rbc casts and poteinuria on ua - low serum C3 complement
diagnosis
IgA nephropathy?
Membranoproliferative glomerulonephritis?
PSGN post strep glomerulonephritis
not iga nephropathy – that v5 days after urti and normal serum complement levels
not mpgn - similar symptoms and low complement but no temporal relationship with infection
severe infection eg cdiff, super high wbc like 50s, predominance of late neutrophil precursors (bands and metamyelocytes), high leukocyte alk phos score
diagnosis
how different from CML?
Leukemoid Reaction
-bad infection mobilizing the young troops
vs cml will have Low leukocyte alk phos score (becaues the neutrophils suck), and Earlier neutrophil precursors on peripheral smear (more myelocytes than metamyelocytes) and “absolute basophilia”
myelodysplastic syndrome often presents with infection in the setting of ___
myelodysplastic syndrome - PANcytopenia
old guy states wavy appearance of lines when looking at a grid and issues reading and driving
diagnosis
prevalence
expect what on physical exam
Macular Degeneration
-Wavy lines is one of the earliest signs (visualizing straight lines takes fine visual acuity so macula function)
Most Common cause of blindness in industrialized countries (risks are age and smoking)
Drusen deposits on macula on exam
guy already on digoxin is put on amio for afib, week later has gi sx anorexia nausea vomiting abdominal pain and fatigue
your recommendation, why
decrease digoxin dose
amio increases digoxin levels and this is acute digoxin toxicity
acute vs chronic digoxin toxicity symptoms
Acute digoxin tox - GI symptoms mostly, maybe weakness and confusion
Chronic digoxin tox - more Neuro and Visual (lethargy, confusion… color changes scotomas blindness)
TF
HIT can cause acute limb ischemia with low platelets and high PTT
T
does warfarin affect PT or PTT
PT
INR is PT/referencePT
pt with history of depression overdosed no fever hypotension dilated pupils and seizure and QRS prolongation on ekg
what drug od’d
mechanism of symptoms
biggest concern
how to treat, why
TCA - depression, anticholinergic side-effects - fever, hypotension, dilated pupils, seizure, decreased conduction velocity
biggest concern is hypotension and long qrs (arrhythmia)
treat with Sodium Bicarbonate - improves blood pressure, narrows qrs, avoids arrhythmia
give the following for what ekg changes
calcium gluconate
magnesium sulfate
sodium bicarbonate
calcium gluconate - hyperkalemia… stabilizes cardiac membrane in hyperkalemia
magnesium sulfate - torsades from long qt
sodium bicarb - hypotension and qrs widening eg from anticholinergic side effects of tca overdose… also give after other emergent meds in hyperkalemia with widened qrs
treat a thoracic esophageal perf vs a cervical esophageal perf
thoracic esophageal perf - surgery
cervical esophageal perf - abx, conservative mgmt
big purple/black periumbilical patches surrounded by erythema in several days postop patient
think
pathophys
diagnose
treat
HIT (necrotic skin lesions at heparin injection sites)
heparin induces a confomational change in platelet surface protein Platelet Factor 4 that exposes a neoantigen tat the body can develop antibodies to (HIT antibodies) and cause platelet aggregation thrombosis and thrombocytopenia
Serotonin Release Assay (gold standard)
HIT ab immunoassay (if high titers)
stop heparin (before diagnosis even confirmed, switch anticoagulation to argatroban, fondaparinux or the like
what anticoagulant can cause an acquired deficiency of protein C
Warfarin - can cause acquired protein C deficiency
necrotic skin lesions at abdominal heparin injection sites
think
pathophys
diagnose
treat
HIT (necrotic skin lesions at heparin injection sites… big purple/black periumbilical patches surrounded by erythema in several days postop patient)
heparin induces a confomational change in platelet surface protein Platelet Factor 4 that exposes a neoantigen tat the body can develop antibodies to (HIT antibodies) and cause platelet aggregation thrombosis and thrombocytopenia
Serotonin Release Assay (gold standard)
HIT ab immunoassay (if high titers)
stop heparin (before diagnosis even confirmed, switch anticoagulation to argatroban, fondaparinux or the like
expect elevated levels of ___ in megaloblastic anemia
elevated HomoCysteine in megaloblastic anemia
-folate and b12 involved in homocysteine metabolism to methionine… no folate b12 - homocysteine buildup, methionine drop
why does Cobalamin B12 Deficiency cause ELEVATED Methylmalonic Acid levels but not folate
Cobalamin B12 involved in methylmalonyl coa to succinyl coa… no cobalamin b12 - methylmalonate buildup
why is Haptoglobin Decreased in hemolytic anemias
because haptoglobin binds free hemoglobin and levels drop
Burr cells
Spur cells
when do you see them
both Burr and Spur in Liver Disease
also Burr in ESRD
(burr is serrated, spurr has fewer larger projections)
scleroderma renal crisis with low hb and plts
what on smear
shistocytes
MAHA
what kind of colon polyp is most concerning, hyperplastic polyp tubular adenoma villous adenoma hamartomatous polyp inflammatory pseudopolyp submucosal polyp
villous adenoma is most concerning
others have low malignant potential… hyperplasia not concerning (dysplasia is) submucosal polyp = lipoma or lymphoid aggregate… hamartomatous polyp = juvenile polyp or peutz jeghers)
what age is risk for hydatiform molar pregnancy?
either extreme of maternal age, young or old
15yo girl, lmp 4 mos ago, sounds like hyperemesis gravidarum maybe getting into preeclampsia and uterus is too big for 4 months
diagnosis
pathophys of preeclampsia here
treatment
hydatiform mole
abnormal placental spiral artery development, placental hypoperfusion and ischemia, maternal htn
suction curettage
follow downtrend bhcg
histologically describe glomerular damage from diabetes
glomerular basement membrane changes
diffuse glomerular sclerosis
nodular glomerular sclerosis (kimmelstiel wilson nodules pathognomonic)
middle age guy, periodic difficulty breathing and wheezing, history of asthma chronic rhinosinusitis with nasal polyps, maybe urticaria, takes aspirin
- diagnosis
- pathophys
- how to tell from asthma/allergy exacerbation
- treatment
Aspirin Exacerbated Respiratory Disease
NON-IgE mediated PSEUDOAllergic drug reaction… from increased conversion of arachidonic acid to proinflammatory leukotrienes and decreased antiinflammatory prostaglandins by blocking cox1 cox2 and shunting arachidonic acid to 5lipoxygenase pathway
looks a lot like asthma/allergy exacerbation, just tie to within 3 hours of aspirin use which the patient might not naturally do
avoid aspirin/nsaids vs desensitize
use leukotriene receptor antagonist instead (Montelukast)
young dude with multiple sexual partners has mild systemic symptoms fever/malaise and painful vesicular rash on erythematous base on palm of his hand
diagnosis
bug
how contracted typically
treat/course
herpetic whitlow
herpes simplex virus
hand contact with genital herpes or health care worker touching infected oral secretions
spontaneous resolution in weeks but recurrence common…. treatment with acyclovir if immunocompromised
Erythema multiforme associated with what virus
Herpes simplex
Erythematous papules and plaques that evolve into target lesions associated with herpes simplex
Eryhema multiforme
Initial large lesion followed by numerous small oval scaly plaques that follow cleavage lines of the trunk
Pityriasis rosea
Diffuse maculopapular rash involving palms and soles and oral mucosa think
Secondary syphilis
Who gets HAV vaccine
Liver disease hbc hcv
Msm
Ivdu
Pneumococcus vaccine recs for hiv patient
Pcv13 once
Ppsv23 8 wks later 5 years later and age 65
Vaccines contraindicated in hiv if cd4 count v200
Varicella mmr zoster (live vaccines)
what kind of beta blocker for esophageal varices
NONSELECTIVE propanolol nadolol
nasopharyngeal carcinoma
associated with what virus
what demographics
nasopharyngeal carcinoma
EBV reactivation associated
Chinese Africa Mid East (diet, genetics)
Aflatoxin B1 is a __toxin that contaminates __ products and increases risk of __
Aflatoxin B1
mycotoxin
contaminates agricultural products
increases risk of HCC hepatocellular carcinoma
TF
recurrent sinusitis increases risk of nasopharyngeal carcinoma
F
sinusitis - risk of nasal polyposis but not cancer
EBV reactivation and Chinese African Mid East risk NasoPharyngeal Carcinoma
seems like malaria but midwestern usa not africa
babesiosis
4-7 weeks after mosquito bite fever headache myalgias arthralgias retroorbital painrash LeukoPenia
think
Dengue Fever
african trypanosomiasis aka
pathogen
african sleeping sickness
tsetse fly
african travel, acute febrile illness with skin lesion, myocarditis, progression to CNS involvement
think
pathogen
african trypanosomiasis aka sleeping sickness
tsetse fly
normal postvoid residual in postpartum mamma
150ml
how to evaluate risk of preterm labor in preggy with prior cervical conization
what to do if at risk
transvaginal ultrasound in 2nd trimester for measurement of cervical length and changes during valsalva
(not digital cervical exam… going to be abnormal…. won’t get length…not as reproducible and accurate)
vaginal progesterone to maintain uterine quiescence if at risk…. intramuscular progesterone and cerclage if prior preterm labor
treat bacterial vaginosis with
metronidazole
history of rheumatoid arthritis, now anemic, low iron low tibc high feritin
dx
tx
anemia of chronic disease
meithotrexate - treat ra to treat anemia
kid, fever sore throat odynophagia, vesicles on tonsils and soft palate
diagnosis
bug
herpangina
coxsackie A virus
why treat asymptomatic bacteruria in pregnancy
higher risk of pyelo because high progesterone relaxes urinary smooth muscle tracts
HIV patient with low CD4 count in Missouri has systemic, lung findings, liver findings, oral ulcers, pancytopenia think why workup treat
disseminated histoplamsosis
opportunistic infection, endemic to midwest/central, starts in lungs and disseminates to liver, spleen, bones, mucosa/skin
urine or serum histoplasma antigen (faster than blood cultures, lymph node biopsy not required)
Amphotericin B.. later -azole for mantainence and antiretroviral for hiv
how does rotor’s syndrome cause dark urine with urinary bili but not urobilinogen in urine
rotors is conjugated hyperbilirubinemia by impaired hepatic secretion of bilirubin. Conjugated bili is water Soluble so can be eliminated in Urine e.g. in rotors… but normally secreted into bile and feces then deconjugated for resorption with 5% loss as urobilinogen in feces and 1% loss as such in urine…. so will only see urobilinogen in urine if bili is getting into intestines and resorbed
TF
fever and chest pain with chylothorax (thoracic duct disruption) eg in the setting of trauma or cancer
F
chyle is does not provoke inflammation
when metronidazole for vaginitis
for bacterial vaginosis
pna symptoms with foul smelling sputum refractory to azythro course… this all after upper endoscopy, what else to prescribe, why
clindamycin - covers anaerobes
or
amoxicillin-clavalunate, carbapenem, (metronidazole if only anti-anaerobe choice but high rate of failure
aspiration pna in setting of post egd