micro 3
Salmonella is a _________ and MAC and produces ________ on HEK
NLF; H2S
__________ agar is a selective agar used to grow Yersinia enterocoliticas "bulls eye" shaped colonies
CIN
Shigella is ____________ and grows as ___________ on HEK agar compared to Salmonella
nonmotile; green colonies
The _________ plate is used to screen for E. coli 0157:H7
Mac with sorbital (SMAC)
The urea breath test should be given if?
the patient complains of peptic/ stomach ulcers; H. pylori
N. gonnorhoeae is a ___________ that is strongly _______ and _________
GNDC; oxidase +; glucose +
Haem. ducreyi is a STD as well as a ________ that appears as a ______________ on GS
GNCB; "school of fish"
Haem. ducreyi causes a painless ___________ on the genitals
chancre
What 2 things are you looking for in a female wet prep?
Yeast and Clue cells (Gardenerella)
A smear from a male urethra thought to have gonnorheae has GNDC and should be reported as ___________
presumptive N. gonnorhoeae (females may be normal flora so more workup)
Syphilis is caused by ____________ (a _________)
Trepenema pallidum; spirochete
Clostridium profringens has a _____________ and is Lecithinase POS on egg yolk agar
double zone of hemolysis
Clostridium profringens on gram stain is a ___________________
boxcar gram pos
Clostridioidis difficile causes _____________--
antibiotic associated collitis
____________ is the most common organism to affect central venous catheters
Coagulase negative staph (staph epidermidis)
what organism causes most of the soft tissue infections?
Staph aureus
A conjunctivitis sample grows with a metallic sheen, is a NLF, and is oxidase positive is ___________________
Pseudomonas aeruginosa
what is normal flora on the skin?
corynebacterium, staph epidermidis, staph aureus, yeast
What is the most common cause of purulent meningitis and is a GPC in lancet shape pair (Alpha hemolytic)
Strep pneumoniae
Organisms mostly associated with neonatal meningitis?
E. coli, Listeria, Group B strep
A GNDC that may cause menigitis is ____________--
Neiserria meningitidis
A GNCB that may cause meningitis is _____________
Haemophilus influenzae type B