micro - descriptions Flashcards
oxidase-positive
gram-negative
bacilli
grows well on highly alkaline media
vibrio cholerae
Herpes
enveloped
double stranded
DNA
winter (viruses)
influenza (orthomyxo)
rota (reo)
RSV (paramyxo)
summer (viruses)
Enteroviruses (Picorno) - Polio - Echo - Coxsacki Arobo - West Nile (flavi)
enveloped partially double-stranded circular DNA w/ RNA dependent DNA polymerase
hepadnavirues
Hep B
nonlactose-fermenting
oxidase-negative
motile
salmonella
gram negative
pyocyanin pigment
psuedomonas
ox pos
gram neg
rod
MC pathogens –> nosocomial bloodstream infx
Coag neg staph
S. aureus
Enterococci
Candida
(GP > GN)
Hep A
picorna
ssRNA
nonenv
Hep B
hepadna
dsDNA***
enveloped
Hep C
flavi
ssRNA
enveloped
Hep D
delta
ssRNA
circular
Hep E
hepe
ssRNA
nonenv
UTI:
catalase pos
gram pos
cocci
staph sapro
coag neg
novobiocin RESISTANT
unenveloped
ssRNA
spread fecal-oral
high mortality in preg
Hep E
gram+ cocci
beta hemolytic
PYR +
(PYR: pyrrolidonyl arylamidase)
Strep pyog (A)
bacitracin sens
gram+ cocci
beta hemolytic
PYR (-)
Strep agalac (B)
bacitracin resistant); CAMP positive
gram+ cocci
gamma hemolytic
PYR +
enterococci
grow in bile AND NaCl
gram+ cocci
gamma hemolytic
PYR (-)
Strep bovis
grow in bile NOT NaCl
facial pain
headache
nasal eschar
pt w/DKA
mucormycosis
mucor or rhizopus or absidia
broad ribbon-like nonseptate hyphae w/ right-angle branching
mucor
rhizopus
grown on:
cysteine-tellurite agar
cornyebacteria
grow as dark black, slightly iridescent
on loffler’s medium - metachromatic phosphate granules (stain with aniline dye like methylene blue)
gram +
cat +
aerobic/facultatively anaerobic
club-shaped rods
corynebacteria
HIV pt
- pain and itching in perirectal area
- intermittant recal bleeding for several mo
- single ulcerative mass in anal canal
squamous cell carcinoma of the anus 2/2 HPV infx
16,18,31
Monospot neg mononucleosis
immunocompetent
CMV
GNR non-motile non-lactose fermenting oxidase neg (no gas) H2S negative
shigella
GNR
lactose non-ferm
ox positive
Pseudomonas
GNR
lactose non-ferm
ox neg
H2S +
salmonella
proteus
GNR
lactose non-ferm
ox neg
H2S neg
shigella
GNR
lactose ferm
fast ferm
kleb
ecoli
enterobacter
GNR
lactose ferm
slow ferm
citrobacter
serratia
fever pharygitis sandpaper-like rash (that blanches) strawberry tongue (possible circumoral pallor like parvoB19)
Scarlet fever - Group A Strep
pyrogenic exotoxins
GNR
non lactose ferm
ox pos
motile
psuedomonas
otitis externa in elderly or diabetic pt
psuedomonas
produce dextrans from sucrose
viridans strep
MCC of endocarditis in IVDU
s. aureus
invade schwann cells
hypopigmentation of skin
patchy areas of anestesia
mycobacterium leprae
ecthyma gangrenosum
psedudomonas
febrile neutropenia + skin lesions (ulcerated appearance and occasional necrotic centerO
pseudomonas
ecthyma gangrenosum
rubella virus type
toga
rubeola vs rubella
both= maculopapular rash face –> trunk
rubella
- typically spreads faster and does not darken or coalesce
- postauricular and occipital lymphadenopathy very common in rubella
cough
coryza
conjuctivitis
(+ Koplik spots)
measles (rubeola)
rash 1-2 days after Koplik
Bacillary angiomatosis
bartonella henselae
Hemolytic Uremic Syndrome
Ecoli O157:H7 (EHEC)
Shigella (?)
toxin acts on EF-2 to block protein synth
diptheria
pseudomonas
toxin acts on 60s ribosomal subunit to block protein synth
shigella
EHEC
larva currens
strongyloides
linear streaks on thighs/butt as larva migrate subcu away from perianal region
“stacked brick” intestinal adhesion
rando ecoli species:
EAEC - enteroaggregative
implicated in perisistent diarrhea in infants in developing countries
E coli that does NOT ferment sorbitol
EHEC
O157:H7
CD21 receptor
EBV (via gp350)
CD21= cellular C3d receptor
attaches to erythroid precursor cells via blood group P antigen
Parvo B19
infected mature B lymphocytes proliferate indefinitely but still secrete Igs
EBV
cyroglobinemia
hep c
non enveloped
ssDNA
parvo
erythema infectiosum
parvo B19
Bronchitis/
bronchiolitis
(3)
RSV
Influenza A
Coronavirus
Segmented
(All RNA - BOAR)
Bunya
Orthomyxo
Arena
Reo
somnolence lethargy oliguria hx -bloody diarrhea BUN up creatinine up fragmented erythrocytes on smear
what food/what path
Undercooked beef
EHEC
(this is HUS)
parvo B19 tropism
erythrocyte precursors
in bone marrow
- painless sore on penis 3wks later... - painful inguinal region swelling - draining ulcers, infl skin - mild fever and malaise - cytoplasmic inclusion bodies
Chlamydia trachomatis
lymphogranuloma venereum
school of fish
haemophils ducreyi
chancroid
travel to/from Africa +
painless hematuria
schistosomiasis
s. haematobium a/w squamous cell carcinoma of the bladder
periportal pipestem fibrosis
schistosomiasis
s. japonicum and s. mansoni
UTI (hematuria, dysuria)
boys
daycare
adenovirus
acute hemorrhagic cystitis
form “serpintine” or “medusa head” colonies
B. anthracis
gram pos rod
hot tub folliculitis
pseudomonas
otherwise healthy kid w/osteomyelitis
staph aureus