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UWorld Step 2 > IM ID - Rd 2 > Flashcards

IM ID - Rd 2 Flashcards

1
Q

What are the defining features of erysipelas?

MC organism?

A

Superficial dermis and lymph, sharply DEMARCATED edges
Rapid spread and onset, fever is EARLY

GrpA strep

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3
Q

How does febrile neutropenia present?

What organism to cover for?

A

ANC < 1500 microL
Will have anemia, mucosal pallor, low Plts

Pseudomonas

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4
Q

What does Ehrlichiosis (tick-borne) cause?

Treat how?

A

Acute febrile illness w/malaise and AMS
NO rash

Doxycycline

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6
Q

What presents w/anemia, thrombocytopenia, inc bilirubin, inc LDH, and inc LFTs after hiking?

A

Babesiosis

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8
Q

Pt w/IE that is highly susceptible to PCN should be treated with what?

A

IV PCN G or IV Ceftriaxone for 4 weeks

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9
Q

What can cause bloody diarrhea in a HIV pt?

A

CMV

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11
Q

What vaccines do you need for chronic liver disease?

A

Tdap, flu, PPSV23, HepA and HepB

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12
Q

HIV pt that presents w/fever, HA, elevated ICP (vomiting, Papilledema), wha it’s the MC cause?

Classic presentation is what?

A

Cryptococcus

Indolent (progresses over days to weeks)

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15
Q

Pt that presents w/noncaseating granuloma, erythema nodusum, but deteriorates after steroid treatment has what?

A

Histoplasmosis

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16
Q

EBV and strep throat can present exactly the same except for what key differences?

A

Strep will get V bad or resolve in 2 weeks

Strep does NOT have generalized LAD

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18
Q

Pt w/pyelonephritis and pH above 8, what is the cause?

A

Proteus

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19
Q

What is a rapidly progressive cellulitis of the submandibular space?

Arises from what?

What kind of pt?

A

Ludwig angina

Dental infection in mandibular molar and then spread to sublingual space

Alcoholics

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21
Q

Rash + symmetric joint pain that resembles R.A. Is what?

A

Parvo B19

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22
Q

What is the alternative treatment for syphilis if there is a PCN allergy?

Who should be desensitized?

A

Doxycycline

Pregnant, CNS syphilis, multiple treatment failures

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24
Q

What is the treatment for HepC?

A

Ledipasvir-sofosbuvir

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25
Q

If the question looks like EBV/mono but the answer choice is not there, what is something that mimics it?

A

CMV

26
Q

Skin lesions and osteolytic or bone problems indicate what?

A

Blastomycosis

28
Q

What test for syphilis has the highest diagnostic sensitivity in primary disease?

Can confirm what?

A

FTA-ABS

VDRL

29
Q

What is the distribution of a TSS rash?

A

Involves the palms and soles

31
Q

What are some uncommon but possible findings in mono?

What lab value?

A

Autoimmune hemolytic anemia and thrombocytopenia 2-3 weeks after initial onset

Elevated reticulocyte count

32
Q

HIV pt w/multiple, non enhancing, asymmetric lesions has what?

A

PML caused by JC virus when CD4 < 200

34
Q

Splenic fluid collection means what?

MC d/t what?

A

Splenic abscess

IE w/hematogenous spread

35
Q

What is the tourniquet test used for?

A

Dengue fever

37
Q

How do you differentiate bw disseminated Histoplasmosis and PCP?

When does disseminated Histo occur?

A

PCP does NOT have LAD, HSM, or pancytopenia
Histo DOES

CD4 < 100

38
Q

What are the major features of Chikungunya fever?

A

Travel to Caribbean
Polyarthritis
thrombocytopenia

43
Q

What kind of HIV pt is at risk for disseminated Bacillary angiomatosis?

A

Cats or homeless (lice)

CD4 < 100

44
Q

How does PCT present?

What is strongly associated with it?

A

Photosensitive skin that develops vesicles w/bullae w/trauma or sun exposure
Form hypo and hyperpigmented areas

HCV

49
Q

IE w/staph epidermidis will have what pmhx?

A

Prosthetic valve
intravascular catheter
Implanted device

50
Q

What presents w/rapid onset of rash, fever, HoTN, diarrhea and thrombocytopenia?

Assoc w/what?

A

TSS

Tampon, nasal packing, post-surgery infection

53
Q

Which pts are at higher risk of getting vibrio vulnificus?

Why?

A

Liver disease (cirrhosis, viral hepatitis), hemochromatosis

Free iron acts as exponential growth catalyst

55
Q

G+, partially acid fast branching filamentous rods in immunocompromised pt indicates what?

Treat how?

A

Nocardia

Bactrim

57
Q

Pt that presents w/symptoms of IE and has a nosocomial UTI, what is the organism?

A

Enterococcus

61
Q

What disease may mimic TB?

MC where?

A

Histoplasmosis

Mississippi and Ohio River basins

UWorld Step 2 (17 decks)

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