micro systems Flashcards
normal skin flora
S. epidermidis
normal nasal flora
S. epidermidis
colonized by S. aureus
normal Oropharynx flora
viridans
dental plaques
S. mutans
normal flora of colon
B. fragilis > E. coli
normal flora of vagina
Lactobacillus, colonized by E. coli and group B strep
food poisoning bugs
B. cereus C. botulinum C. perfringens EHEC Salmonella S. aurues Vibrio
B. cereus
reheated rice
C. perfringens
reheated meat
salmonella
poultry, meat, eggs
S. aureus
meats, mayonnaise, custard
toxin
vibrio
seafood
bloody diarrhea
Campylobacter E. histolytica EHEC EIEC Salmonella Shigella Yersinia enterolitica
campylobacter
comma shaped
growth at 42 -> cold salads, deli meat
E. histolytica
protozoan
amebic dysentery
liver abscess
EHEC
HUS
shiga like toxin
Slamonella
lactose neg
flagellar motility
shigella
lactose neg
very low ID50
produces shiga toxin
bacillary dysentery
Yersinia enterolytica
day care outbreaks
pseudoappendicitis
watery diarrhea
C. difficile C. perfringens ETEC protozoa V. cholerae viruses (roto, noro, adeno)
pneumonia
group B strep
E. coli
pneumonia 4wk-18yr
Runts May Cough Chunky Sputum RSV mycoplasma C. trachomatis (infants-3) C. pnemoniae (school age) S. pneumoniae
pneumonia 18-40
mycoplasma
C. pneumoniae
S. penumoniae
pneumonia 40-65
S. pneumonia H. influenza Anaerobes viruses mycoplasma
pneumonia 65+
S. pneumoniae Influenza virus anaerobes H. influenza gram neg rods
pneumonia in alcoholics/IV drug users
S. pneumonia
Klebsiella
S. aureus
Aspiration neumonia
anaerobes Peptostreptococcus fusobacterium prevoella bacteroides
atypical pneumonias
Mycoplasma
legionella
chlamydia
CF pneumonia
pesudomonas
S. aureus
S. pneumoniae
immunocompromised pneumonia
S. aureus enteric gram neg rods fungi viruses P. jirovecii
nosocomial pneumonia
S. aureus
psudomonas
enteric gram neg rods
post viral pneumonia
S. aureus
H. influenxa
S. pneumonia
meningitis 0-6mo
group B strep
E. coli
listeria
meningitis 6mo-6yr
S. pneumonia
N. meningitidis
H. influenza type B
Enteroviruses
meningitis 6-60yr
S. pneumoniae
N. meningitis (#1 in teens)
Enteroviruses
HSV
meningitis 60+
S. penumoniae
gram neg rods
listeria
Tx meningitis
ceftriaxone and vanco empirically add ampicillin if listeria suspected
what are the MCC of brain abscess
Virdans and S. aureus
osteomyelitis assumed causative agent
S. aureus
ostomyelitis if sexually active
N. gonorrhoeae, rare
osteomyelitis if sickle cell
salmonella and S. aureus
osteomyelitis if prosthetic joint
S. aureus and S. epidermidis
osteomyelitis if vertebrae involved
S. aureus, TB
osteomyelitis if cat/dog bite
pasteurella multocida
osteomyelitis if IV drug user
pseudomonas
candidia
S. aureus
top 3 causes of UTI
E. coli
S. saprophyticus
klebsiella
other causes of UTI
serratia (red pigment)
enterococus (often nosocomial and drug resistant)
proteus (motility -> swarming on agar, produces urease -> struvite stones)
psudomonas (blue/green, fruity odor)
bacterial vaginosis
gardenella no inflammation fishy odor clue cells pH >4.5 Tx with metronidazole
trichomoniasis vaginosis
inflammation-> strawberry cervix frothy, foul smelling discharge motile trichomonads pH >4.5 Tx metronidazole and Tx sex partners
TORCHES
T-toxoplasma gondii O- other R-rubella C-CMV H-HIV/HSV2 Syphilis
toxoplasma gondii
cat feces or undercooked meat
mom asymptomatic
baby triad: chorioretinits, hydrocephalus, intracranial calcifications
+/- blueberry muffin rash
other
Group B strep, listeria, E. coli -> meningitis
Parvovirus B19 -> hydrops fetalis
Rubella
spread via respiratory droplets
mom: rash, lymphadeopathy, arthritis
baby triad: PDA, cataracts, deafness
+/- blueberry muffin rash
CMV
sexual contact, organ transplants
mom asymptomatic or mono
baby hearing loss, seizures, blueberry muffin rash, periventricular calcifications
HIV
sex contact, needlestick
mom- depends on CD4 count
baby: recurrent infections, chronic diarrhea
HSV2
skin or mucous membrane contact
mom usually asymptomatic, or lesions
baby encephalitis, herpetic lesions
syphilis
sexual contact
mom- normal syphili
baby- stillbirth, hydrops fetalis, notched teeth, saddle node, short maxilla, saber shins, CNVIII deafness
asplenic pt
encapsulated microbes especially SHiN:
S. pneumonia»_space; H. influenza > N. meningitidis
Brr rods in oral infection and sulfur granules
Actinomyces
Chronic granulomatous disease
Cat + microbes especially S. aureus
dog/cat bite
Pasturella multocida
facial nerve palsy
burrelia burgdorferi
funga infection in HIV
mucor or rhixophus
health care providor
HBV
neutropenic pt
candida
aspergillus
organ transplant recipient
CMV
PAS +
T. whipplei (whipple disease)
pediatric infection
H. influenza
Pneumonia in cystic fibrosis or burn victims
psudomonas
pus, empyema, abscess
S. aureus
rash on hands and feet
Coxsackie A
treponema palldium
rickettsia rickettsii
sepsis/menigitis new born
group B strep
surgical wound
S. aurues
traumatic open wound
C. perfringesn