Uworld SA 1 Flashcards
Pts on TPN are at greatest risk of developing?
Blood stream infections (Central line associated infection)
Staph epi, staph a, klebsiella, pseudomonas, candida
Pt drank antifreeze. What would you suspect on ABG?
AG metabloic acidosis
LOW PCO2, HCO3 b/c they are being absorbed by free H+
Calcium oxalate crystals in the urine
Nonstress test is reactive if
> 2 accelerations (+15bpm over baseline) lasting over 15 seconds in a 20 min period
reactive NST = adequate fetal oxygenation
Pt on chemo
develops bulla surrounded by erytema on foot. Bulla ruptured leaving apainless black ulcer
Dx and Tx?
Ecthyma gangrenosum (psuedomonas) Piptazo, fluroquinolones
Pt was started on a med for BPH and had syncope in the middle of the night. Why?
Orthostatic hypotension
He was probably started on alpha blocker
37 M
severe weakness and dizziness, syncope 2 x in 24 hour
Vague mid chest discomfort and L sided neck pain
recent URI
Thready pulses in both radial a. that disappear with deep inspiration
Cardiac tamponade
chest pain, decreased cardiac output, pulsus paradoxus following a viral infection -> tamponade d/t pericarditis
Lungs will stay clear
36 F confusion agitation x 2 days twitching of R arm this morning T - 10.7 Neck supple EEG - high amplitude slow waves over the L temporal and frontal lobes Dx and CSF findings?
HSV encephalitis
fever, HA, seizure, confusion, stupor x days
CT/MRI/EEG - abn frontotemporal region
CSF - lymphocytosis, RBCs, NL glucose
Smoker has progressive dyspnea but FEV1/FVC 85%
Fibrosis
Older man Pain in legs Worse walking downhill absent ankle reflexes Next step?
MRI
Lumbar spinal stenosis
Older male fatigue, HA, easy bruising 180/120 Increased pigmentation in plamar creases lower extremity ecchymosis hypokalemia hypernatremia 3cm mediastinal mass Dx?
Paraneoplastic cushing syndrome
ectopic ACTH (polypeptide) from small cell lung carcinoma
Hypertension, hyperpigmentation
NL cushings no hyperpigmentation
40 wk gest in labor presents 5cm, 90%, -4 2hrs - 6 cm, 90%, -4 5 hrs - unchanged Inadequate contractions Next step?
IV oxytocin
6 cm >3hrs = protracted labor
C-section if NO change >4 hrs w/ adequate, OR NO change > 6 hours with inadequate
Latent vs active phase of preganancy?
Latent 0-6cm
Active 6-10 cm (rapid changes)
Older man
R hand weakness, slurred speech 15-20 min
hx of afib
What can prevent future episodes?
Anticoagulation (rivaroxaban)
Pleural effustion with: yellow Protein > 4 WBC w/ Lymphocyte predominance low glucose (<60)
Exudative effusion
Causes: infection, malignancy, PE
chylothorax has similar findings but fluid will look milky
Once pt is dx’d with HIV what vaccine should they receive quickly?
pneumococcal 23
Smoker presents with HA that gets worse when he leans forward
recent dx of small cell lung cancer
PE - crazy JVD, no peripheral edema
Dx and next step?
superior vena cava syndrome Needs radiation (palliative)
Hospitalized pt s/p surgery develops RUL PNA
Dx?
Aspiration PNA, raising head of bed can prevent this
Pt with cirrhosis has a mild fever
Dx and how did this happen?
Spontaneous bacterial peritonitis
Peritoneal fluid becomes infected when an enteric organism translocates across the intestinal wall
Paracentesis w/ PMH >250 = diagnostic
Bullus pemphigoid Ab’s target the?
Hemidesmosomes
Histo - subepidermal cleavage, linear IgG at BM
Pemphigus vulgaris histo
Acantholysis, intraepidermal cleavage
NO oral cavity involvment
Intact bullus are rare - skin is very fragile!
adult w/ neuro syx has a solitary enhancing brain lesion in the temporal lobe. Most likely cause?
Metastases, most common intracranial tumor in adults
Melanoma, lung, breast, renal
Peripheral, circumscribed enhancing lesion surrounded by vasgenic edema on MRI
Woman had a voluntary abortion during last pregnancy d/t fetal anencephaly. What is recommended to decrease her risk for her next pregnancy?
Begin folic acid
Decreases risk of neural tube defects
Older man weakness x 6 wks Difficults with chairs and stairs AST - 250 ALT - 140 Lactate - 665 CK - 3700
Polymyositis
symmetric proximal m. weakness
Painless (usually), elevated CK
NO skin findings
bx - patchy necrosis, CD8 infiltration of the endomysium
Older adult
symmetric stiffness of shoulders, hip girlde
Elevated ESR, C reactive protein
Polymyalgia rheumatica
Association with temporal arterits
In PTX, chest tubes improve vitals by increasing?
Venous return
Sudden SOB after UCD placement
No lung markings on CXR with a vertical pleural line
Dx?
Tension PTX
Older man
feeling weak x 3 months, instability
PE - atrophy of the hand muscles b/l, upgoing babinsky and hyperactive knee jerk
ALS
Mixed UMN and LMN
UMN - hyperreflexia, Babinski
LMN - fasiculations, atrophy
If it sounds like ALS but has Parkinson features (ie tremor) suspect?
Multiple system atrophy
Adult with periods of unresponsiveness “blank staring” x 1 min
followed by 20 min of confusion, dragging 1 leg
Temporal lobe epilepsy
Gestational DM in 3rd trimester is associated with which PE finding in the neonate?
Respiratory distress (fetal lung immaturity), preterm delivery, macrosomia
GDM in 1st trimester - increases risk of cardiac and CNS dz
Female
Serositis (pleural/pericardia effusion)
symmetric arthritis
Pancytopenia
SLE
Tx for vtach?
Amiodarone
Two hours after a pneumatic dilation of esophageal stricture pt develops nausea, retching, SOB, chest pain
Emesis w/ clotted blood
Dx?
Esophageal perforation
Most common cause of pancreatic calcifications?
Chronic pancreatitis most commonly d/t alcoholism
Man with all the PMH possible has foot pain
foot is thin, shiny, devoid of hair, shallow ulcer
Next step?
ABI
Hairless = vascular, not neuro
Pt is started on chlorthalidone for HTN but develops severe leg cramps and loss of reflexes. How should he be managed long term?
Spironolactone
likely developed severe hypokalemia while on thiazide suggesting his HTN is d/t primary hyperaldosteronism
best screening for primary hyperaldosteronism?
early morning Plasma aldosterone to plasma renin ratio
If ratio > 20 - PH. Need CT to determine if unilateral vs bilateral
Older man with unspecific syx
Ca - 14
Dx?
Malignancy
Hypercalcemia of malignancy d/t parathyroid hormone related protein (very common in nonsmall cell lung cancer). Sr Ca is usually much higher than what would be expected in primary hyperparathyroidism (14 vs 10)
Gastric bypass pt develops cholelithiasis Why is she at increased risk?
Rapid weight loss
Older man w/ reddish brown urine x 2 days
strep syx 1 month ago
Long smoking hx
dipstic k + blood, protein
Microscopic exam numerous RBCs many of which are DYSMORPHIC
Dx?
Primary glomerular pathology
glomerulo = proteinuria, dysmorphic erythrocytes, red cell casts
PSGN and IgA nephropathy look similar but can be differentiated based on hx
Pt has CKD
Low Ca
High phos
dx?
Secondart hyperparathyroidism
the elevation in PTH -> renal osteodystrophy w/ associated bone pain
T 1 DM has frequent urinary dribbling/leakage worse at night.
Post void volume 300 mL
Tx?
Cholinergic agonist (bethanechol)
Overflow incontinence d/t neurogenic bladder. Tx with augemented voidtechniques, cholinergics. Severe cases -> cath
Diagnositc criteria for SBP
> 250 PMN’s on paracentesis
Guy in septic shock has metabolic acidosis. Why?
Increased tissue metabolic acid production (LDH)
Young adult
fatigue, orthopnea following URI
PMI 6th intercostal space
Dx?
Dilated cardiomyopathy (viral)
Plaques on the knees
Psoriasis
Jaundice x 3 months Abd discomfort Fullness RUQ T bili - 12.5 Alk Phos - 350 Where is the lesion?
Pancreas
Jaundice + weight loss + vague abd pain -> pancreatic cancer
elevated T bili, alk phos suggest cholestasis d/t tumor obstruction of CBD
Kid abd pain, dizziness x 2 hours
vomiting brig red blood, diarrhea w/ dark green stools
Which of moms pills did he take?
Iron
GI hemorrhage - bloody diarrhea and hematemsis. Can progress to met acidosis, hepatotoxicity, SBO, death
Older woman w/ back pain, fever, nighsweats, weight loss On peritoneal dialysis, former smoker TTP L3/L4 CXR - cavitory infiltrate in LUL Collapse of L3/L4 vertebral bodies Dx?
TB
Pt has new irregulaly irregular heart rhthm. What is the best initial test?
TSH and T4
Hyperthyroidism needs to be identified in new a fib
R knee pain from twisting injury
Medial knee pain w/ weight bearing, squatting
Unable to fully extend knee and feels the knee will give way while walking
Dx and PE finding?
Meniscal tear
Painful click during flexion/extension
What is the key prognositc factor in in astrocytomas?
Degree of anaplasia (atypia, mitoses, neovascularity, necrosis are worrisome)
LN splenomegaly Mild cytopenias Leukocytosis with significant lymphocyte predominancy Dx?
CLL
Tx - Rituximab, Ab directed against CD20 Ag
IBDU has add neuro syx and holosystolic murmur
Dx?
Brain abscess
IE can cause hematogenous seeding to the brain -> FND, elevated intracranial pressure, fever
Dx - gadolinium enhanced MRI
Pt with CAP is dry and has hyponatremia. Why hypoNa?
Intravascular volume depletion
Low volume -> ADH secretion -> retain free water
SCD pt with bacteremia/sepsis
Etiology?
Strep pneumo or H. flu
SCD pt with PNA
Strep pneumo
SCD pt with osteomyelitis or septric arthritis
Staph aureus
Salmonella
SCD pt with meningitis
Strep pneumo
When are prophylactic abx given prior to dental work
Prosthetic heart valves
Previous IE
Not required in pts with MVP, Rhemmatic fever, CHD (ASD, bicuspid)
How would increasing the cutoff TSH for hyperthyroidism affect Sens and Spec?
Sensitivity would decrease (TP/TP+FN, FN would be increased so Sens would decrease)
Specificity would increase
AFter receiving haloperidol pt develops muscle stiffness and difficulty turning his neck. Tx?
Diphenhydramine ( or benztropine, trihexyphenidyl; anticholinergics)
torticollis d/t EPS
Tx for neuroleptic malignant syndrome?
Dantrolene
Post menopausal female with bloating, R adnexal fullness, nodularity along rectovaginal septum
Dx?
Epithelial ovarian carcinoma
Severe epigastric pain w/ vomiting x 23 hours BMI 31 42 female Alk phos - 90 ALT - 79 Dx?
Acute cholecystitis