Microbiological Identification Flashcards
Gram Positive Cocci
Catalase +
Coagulase +
IV drug use
Staph Aureus
IV drug use
Patients with impared neutrophil function
Leading cause of osteomyelitis
Gram + Cocci Catalase + Coagulase - Novobiocin Sensitive
Staph Epidermidis Adhesin polysaccharide promotes adhesion to med devices Chemotherapy Give Vancomycin Neutropenic patients susceptible
Gram + Cocci Catalase + Coagulase - Novobiocin Insensitive
Staph Saprophyticus
UTI
Treat with TMP and SMX
Gram + Cocci
Catalase -
B hemolytic
Bacitracin sensitive
Strep Pyogenes
M protein is antiphagocytic
Lumpy bumpy patter in glomerulus
Antistreptolysin O antibodies present
Gram + Cocci Catalase - B hemolytic Bacitracin Insensitive "prolonged labor with rupture of membranes"
S. agalactiae
Following obstetric complications
Most common cause of meningitis in newborns
“prolonged labor with rupture of membranes”
Gram + Cocci Catalase - a, b, y hemolytic Grows in 40% bile Grows in 6.5% NaCl
E. faecalis
UTI while on cephalosporins
Subacute bacterial endocarditis
Second most common cause of nosocomial infections
Gram + Cocci Catalase - a, b, y hemolytic Grows in 40% bile Susceptible to 6.5% bile Associated with endocarditis and colon cancer
S. Bovis
Associated with endocarditis and colon cancer
Treat with Penicillin
Signals IBS
Gram + Cocci Catalase - a hemolytic bile esculin negative optochin susceptible Rusty sputum and lobar consolidation
S. pneumoniae
Rusty sputum and lobar consolidation
Give amoxicillin, if allergic give erythromycin
Gram + cocci Catalase - a hemolytic bile-esculin negative optochin resistant
S. mutans
S. Intermedius
Gram + bacilli
Non-spore forming
non-motile
Large grey mucous in oropharynx
C. Diptheriae
Large grey mucous in oropharynx
ST-T wave changes on ECG
Seen on tellurite culture
Gram - bacilli
Lactose fermenter
Currant Jelly sputum
Alcoholics
K. pneumoniae
Currant Jelly sputum
Alcoholics
Not foul smelling aspiration pneumonia
Gram - bacilli
Lactose fermenter
Indole +
E. Coli
Gram - bacilli
Non-fermenter
Oxidase +
P. Aureuginosa
Gram - bacilli Non- fermenter Oxidase - Urease + Struvite stones
P. Mirabilis Persistant UTI, High pH, Radioopaque stones Struvite stones Treat with TMP and SMX Swarming growth on media
Gram - coccobacilli
X and V factors required
Can cause partial hearing loss
H. Influenzae
Requires desmin and NAD to grow
Can cause partial hearing loss
Has IgA protease
Gram - coccobacilli
Growth on Charcoal yeast agar with iron and cysteine
L. Pneumophila Flu-like symptoms Neutrophils but no bacteria in sputum Pontiac Fever Treat w/ erythromycin
Gram - coccobacilli
Growth on bordet-genguo medium
B. Pertussis
Acid Fast
Thin rods
Obligate Aerobe
M. Tuberculosis
Not gram + or gram -
M. Pneumoniae
C. Psittaci
C. pneumoniae
