ID - MC Pathogens by System

Identify the MC pathogen causing each of these disorders. The number in the column represents the number of correct answers for each condition, with an asterisk presenting beside the most common pathogen.
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Last updated: January 19, 2024
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First submittedNovember 8, 2023
Times taken12
Average score27.4%
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SYSTEM
CONDITION
FEATURE
PATHOGEN
CARDIO
infective endocarditis
overall
s. aureus
CARDIO
acute bacterial, IVDA
s. aureus
CARDIO
subacute bacterial
strep viridans
CARDIO
50+ yoM w/ hx of GI/GU procedure
enterococcus
CARDIO
prosthetic valve
s. epidermidis
CARDIO
rheumatic fever
overall
Group A Strep (S. pyogenes)
RENAL
cystitis
overall
e. coli
RENAL
2MC in sexually active women
Staph saprophyticus
RENAL
pyelonephritis
< 35 yo (2)
gonorrhea, chlamydia
RENAL
35+ yo
e. coli
RENAL
indwelling catheter
enterococcus
RENAL
pelvic inflammatory disease
overall (3)
chlamydia, gonorrhea, trichomonas
RENAL
BV
overall
gardnerella vaginalis
RENAL
trichomoniasis
overall
trichomonas vaginalis
RENAL
balanitis
overall
candida
RENAL
urethritis
overall
chlamydia
RENAL
acute prostatitis
children
mumps
RENAL
<35yo (2)
chlamydia, gonorrhea
RENAL
35yo+
e. coli
RENAL
chronic prostatitis
general (2)
e. coli, proteus
RENAL
postpartum endometritis
general (2)
GBS, staph
RENAL
epididymitis
<35yo
chlamydia
RENAL
35yo+
e. coli
RENAL
orchitis
general
mumps
RENAL
lymphogranuloma venereum
general
chlamydia
RENAL
chancroid
general
haemophilus ducreyi
RENAL
syphillis
general
treponema pallidum
GASTRO
acute cholecystitis
overall
e. coli
GASTRO
spontaneous bacterial peritonitis
overall (2)
e. coli, klebsiella
GASTRO
diverticulitis
fecalith (2)
E. coli, b. fragilis
GASTRO
ascending cholangitis
general
E. coli
GASTRO
appendicitis
fecalith (2)
E. coli, b. fragilis
GASTRO
gastroenteritis
general (2)
norovirus*, rotovirus
GASTRO
parasitic
giardia
GASTRO
peptic ulcer disease
general
h. pylori
EENT
acute bacterial parotitis
general
s. aureus
EENT
corneal abrasion
general
pseudomonas
EENT
blepharitis
bacterial
s. aureus
EENT
acute bacterial suppurative parotitis
general
s. aureus
EENT
otitis media
acute (4)
s. pneumo*, h. flu, moraxella catarrhalis, s. pyogenes
EENT
chronic
pseudomonas, s. aureus
EENT
otitis externa
overall
pseudomonas
EENT
fungal (otomycosis)
candida, aspergillus
EENT
sinusitis
acute (4)
s. pneumo**, h. flu*, moraxella catarrhalis, s. pyogenes
EENT
chronic
s. aureus
EENT
fungal (2)
aspergillus*, mucormycosis
EENT
conjunctivitis
bacterial (3)
s. pneumoniae, h. flu, m. catarrhalis
EENT
contact wearers
pseudomonas
EENT
neonatal
gonorrhea
EENT
peritonsillar abscess
general
GAS (s. pyogenes)
EENT
acute bacterial rhinosinusitis
overall (3)
s. pneumo*, h. flu, m. catarrhalis
EENT
vestibular neuritis
overall
HSV, VZV, EBV
EENT
hordeolum
general
s. aureus
EENT
orbital cellulitis
general
s. aureus
EENT
rhinitis
viral
rhinovirus
EENT
bacterial
s. pneumo
PULM
epiglottitis
overall
haemophilus influenza B
PULM
pertussis
overall
bordatella pertussis
PULM
croup
overall
parainfluenza B
PULM
CAP
overall (2)
s. pneumo, mycoplasma pneumoniae
PULM
HAP
overall (2)
s. aureus, pseudomonas
PULM
aspiration pneumoniae
alcoholics
klebsiella
PULM
strep pneumonia
general
s. pyogenes
DERM
mastitis and breast abscess
overall
s. aureus
DERM
erysipelas/cellulitis
overall
s. pyogenes
DERM
cellulitis
general (2)
s. aureus*, s. pyogenes
DERM
mastoiditis
general
s. pneumo
DERM
hand foot and mouth (herpangina)
general
coxsackie virus
DERM
erythema multiforme
infectious (2)
HSV1*, mycoplasma pneumoniae
MSK
osteomyelitis
general
s. aureus
MSK
sickle cell disease
salmonella
MSK
neonates
GBS
MSK
puncture wounds, diabetics
pseudomonas
MSK
recent prosthetic joint replacement
s. epidermidis
MSK
septic joint
general
s. aureus
MSK
IVDU
s. aureus
MSK
prosthetic joint
s. epidermidis
MSK
sexually active young adult
gonorrhea
MSK
immunocompromised, trauma
pseudomonas
NEURO
bacterial meningitis
<1mo (2)
GBS (s. agalactiae*), listeria
NEURO
1mo - 18yo (2)
n. meningitidis*, s. pneumo
NEURO
18-50yo (2)
s. pneumo*, n. meningitidis
NEURO
50yo+ (2)
s. pneumo*, listeria
NEURO
encephalitis
general
HSV-1
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