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Uworld > micro - descriptions > Flashcards

micro - descriptions Flashcards

1
Q

oxidase-positive
gram-negative
bacilli
grows well on highly alkaline media

A

vibrio cholerae

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2
Q

Herpes

A

enveloped
double stranded
DNA

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3
Q

winter (viruses)

A

influenza (orthomyxo)
rota (reo)
RSV (paramyxo)

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4
Q

summer (viruses)

A 
Enteroviruses (Picorno)
- Polio
- Echo
- Coxsacki
Arobo
- West Nile (flavi)
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5
Q 
enveloped
partially double-stranded
circular
DNA
w/ RNA dependent DNA polymerase
A

hepadnavirues

Hep B

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6
Q

nonlactose-fermenting
oxidase-negative
motile

A

salmonella

gram negative

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7
Q

pyocyanin pigment

A

psuedomonas

ox pos
gram neg
rod

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8
Q

MC pathogens –> nosocomial bloodstream infx

A

Coag neg staph
S. aureus
Enterococci
Candida

(GP > GN)

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9
Q

Hep A

A

picorna

ssRNA
nonenv

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10
Q

Hep B

A

hepadna

dsDNA***
enveloped

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11
Q

Hep C

A

flavi

ssRNA
enveloped

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12
Q

Hep D

A

delta

ssRNA
circular

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13
Q

Hep E

A

hepe

ssRNA
nonenv

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14
Q

UTI:
catalase pos
gram pos
cocci

A

staph sapro

coag neg
novobiocin RESISTANT

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15
Q

unenveloped
ssRNA
spread fecal-oral
high mortality in preg

A

Hep E

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16
Q

gram+ cocci
beta hemolytic
PYR +

(PYR: pyrrolidonyl arylamidase)

A

Strep pyog (A)

bacitracin sens

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17
Q

gram+ cocci
beta hemolytic
PYR (-)

A

Strep agalac (B)

bacitracin resistant); CAMP positive

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18
Q

gram+ cocci
gamma hemolytic
PYR +

A

enterococci

grow in bile AND NaCl

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19
Q

gram+ cocci
gamma hemolytic
PYR (-)

A

Strep bovis

grow in bile NOT NaCl

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20
Q

facial pain
headache
nasal eschar
pt w/DKA

A

mucormycosis

mucor or rhizopus or absidia

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21
Q

broad ribbon-like nonseptate hyphae w/ right-angle branching

A

mucor

rhizopus

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22
Q

grown on:

cysteine-tellurite agar

A

cornyebacteria

grow as dark black, slightly iridescent

on loffler’s medium - metachromatic phosphate granules (stain with aniline dye like methylene blue)

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23
Q

gram +
cat +
aerobic/facultatively anaerobic
club-shaped rods

A

corynebacteria

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24
Q

HIV pt

  • pain and itching in perirectal area
  • intermittant recal bleeding for several mo
  • single ulcerative mass in anal canal
A

squamous cell carcinoma of the anus 2/2 HPV infx

16,18,31

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25
Q

Monospot neg mononucleosis

immunocompetent

A

CMV

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26
Q 
GNR
non-motile
non-lactose fermenting
oxidase neg (no gas)
H2S negative
A

shigella

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27
Q

GNR
lactose non-ferm
ox positive

A

Pseudomonas

28
Q

GNR
lactose non-ferm
ox neg
H2S +

A

salmonella

proteus

29
Q

GNR
lactose non-ferm
ox neg
H2S neg

A

shigella

30
Q

GNR
lactose ferm
fast ferm

A

kleb
ecoli
enterobacter

31
Q

GNR
lactose ferm
slow ferm

A

citrobacter

serratia

32
Q 
fever
pharygitis
sandpaper-like rash (that blanches) 
strawberry tongue
(possible circumoral pallor like parvoB19)
A

Scarlet fever - Group A Strep

pyrogenic exotoxins

33
Q

GNR
non lactose ferm
ox pos
motile

A

psuedomonas

34
Q

otitis externa in elderly or diabetic pt

A

psuedomonas

35
Q

produce dextrans from sucrose

A

viridans strep

36
Q

MCC of endocarditis in IVDU

A

s. aureus

37
Q

invade schwann cells
hypopigmentation of skin
patchy areas of anestesia

A

mycobacterium leprae

38
Q

ecthyma gangrenosum

A

psedudomonas

39
Q

febrile neutropenia + skin lesions (ulcerated appearance and occasional necrotic centerO

A

pseudomonas

ecthyma gangrenosum

40
Q

rubella virus type

A

toga

41
Q

rubeola vs rubella

A

both= maculopapular rash face –> trunk

rubella
- typically spreads faster and does not darken or coalesce

  • postauricular and occipital lymphadenopathy very common in rubella
42
Q

cough
coryza
conjuctivitis

A

(+ Koplik spots)

measles (rubeola)

rash 1-2 days after Koplik

43
Q

Bacillary angiomatosis

A

bartonella henselae

44
Q

Hemolytic Uremic Syndrome

A

Ecoli O157:H7 (EHEC)

Shigella (?)

45
Q

toxin acts on EF-2 to block protein synth

A

diptheria

pseudomonas

46
Q

toxin acts on 60s ribosomal subunit to block protein synth

A

shigella

EHEC

47
Q

larva currens

A

strongyloides

linear streaks on thighs/butt as larva migrate subcu away from perianal region

48
Q

“stacked brick” intestinal adhesion

A

rando ecoli species:
EAEC - enteroaggregative

implicated in perisistent diarrhea in infants in developing countries

49
Q

E coli that does NOT ferment sorbitol

A

EHEC

O157:H7

50
Q

CD21 receptor

A

EBV (via gp350)

CD21= cellular C3d receptor

51
Q

attaches to erythroid precursor cells via blood group P antigen

A

Parvo B19

52
Q

infected mature B lymphocytes proliferate indefinitely but still secrete Igs

A

EBV

53
Q

cyroglobinemia

A

hep c

54
Q

non enveloped

ssDNA

A

parvo

55
Q

erythema infectiosum

A

parvo B19

56
Q

Bronchitis/
bronchiolitis
(3)

A

RSV
Influenza A
Coronavirus

57
Q

Segmented

A

(All RNA - BOAR)

Bunya
Orthomyxo
Arena
Reo

58
Q 
somnolence
lethargy
oliguria
hx -bloody diarrhea
BUN up
creatinine up
fragmented erythrocytes on smear

what food/what path

A

Undercooked beef

EHEC

(this is HUS)

59
Q

parvo B19 tropism

A

erythrocyte precursors

in bone marrow

60
Q 
- painless sore on penis
3wks later...
- painful inguinal region swelling
- draining ulcers, infl skin
- mild fever and malaise
- cytoplasmic inclusion bodies
A

Chlamydia trachomatis

lymphogranuloma venereum

61
Q

school of fish

A

haemophils ducreyi

chancroid

62
Q

travel to/from Africa +

painless hematuria

A

schistosomiasis

s. haematobium a/w squamous cell carcinoma of the bladder

63
Q

periportal pipestem fibrosis

A

schistosomiasis

s. japonicum and s. mansoni

64
Q

UTI (hematuria, dysuria)
boys
daycare

A

adenovirus

acute hemorrhagic cystitis

65
Q

form “serpintine” or “medusa head” colonies

A

B. anthracis

gram pos rod

66
Q

hot tub folliculitis

A

pseudomonas

67
Q

otherwise healthy kid w/osteomyelitis

A

staph aureus

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