UWorld_7.05

Question 1

Cause of post-epidural anesth. hypotension

Answer 1

sympathetic blockade ==> venous pooling @ legs

Question 2

Complication of nitroprusside drip

Answer 2

cyanide toxicity (esp. @ pt. w/CKD)

Question 3

Presentation of cyanide toxicity

Answer 3

• flushing
• H/A, AMS
• arrhythmias
• metabolic acidosis

Question 4

Tx of cyanide toxicity

Answer 4

sodium thiosulfate

Question 5

Gonoccoccal vs. Chlamydial conj.

Answer 5

gono = purulent
chlam = watery

Question 6

Diverticular bleeding presentation

Answer 6

• most common lower GI bleeding @ older adults
• mostly painless
• large volume ==> lightheadedness or HDinstability

Question 7

meningococcal booster/vaccine indications

Answer 7

• initial @ 11-12; optional @ 19-21 for high-risk pt.

- booster @ 16-21 if primary vaccine before 16th bday

Question 8

recurrent renal stones+ fhx ==> dx?

Answer 8

• cystinuria
• stones = hard and radioopaque
• UA = hexagonal crystals
• urinary cyanide nitroprusside (+)

Question 9

Clinical presentation of ALL

Answer 9

• nonspecific
• bone pain
• lymphadenopathy
• HSM
• pallor
• petechiae

Question 10

GC-induced myopathy presentation

Answer 10

• proximal m. weakness and atrophy W/OUT pain or tenderness
• typically LE
• ESR = normal
• CK = normal

Question 11

Polymyalgia rheumatica presentation

Answer 11

• muscle pain and stiffness @ shoulder or pelvic girdle
• tenderness w/decreased ROM
• responds rapidly to glucocorticoids
• ESR = elevated
• CK = normal

Question 12

Large amount of blood on UA + few RBCs on microscopy ==> ?

Answer 12

suspect myoglobinuria

Question 13

Large basophilic cells w/vacuolated appearance ==> ?

Answer 13

CMV mononucleosis

Question 14

IgA deficiency ==> ? transfusion rxn

Answer 14

anaphylactic transfusion rxn

Question 15

Fever, flank pain, hemoglobinuria, renal failure, DIC after transfusion ==> dx?

Answer 15

• acute hemolytic rxn
• caused by ABO incompatibility
• (+) direct Coombs