Bacteriology - Staph and Strep Flashcards
Virulence Factors of Staph aureus
Exfoliatin, Heat Stable Enterotoxin; TSST-1; Alpha Toxin
Test for susceptibility for scarlet fever
Dick Test
TEN aka
lyell disease
Tampon… Nasal packing..
Toxic Shock Syndrome of Staph aureus
Scaled Skin Syndrome aka
Ritter Syndrome
Rust colored sputum, lobar distribution
Strep pneumoniae
Produces scarlet fever
Erythrogenic toxin
Potato Salad, Mayonaisse
Staph aureus
OVERPaSs
Optochin: Viridans Resistant; Pneumoniae Sensitive
Novobiocin sensitive staph
Staph Epidermidis
NO StRES
Novobiocin: Saprophyticus Resistant; Epidermidis Sensitive
Most common cause of acure endocarditis
Staph aureus
MCC of Ventriculoperitoneal shunt infections
Staph Epidermidis
MCC of subacute bacterial endocarditis and native valve endocarditis
Strep sanguis
MCC of septic arthritis in prosthetic joints
Staph Epidermidis
MCC of prosthetic valve endocarditis
Staph Epidermidis
MCC of otitis media
Strep pneumoniae
MCC of neonatal pneumonia, sepsis, and meningitis
Group B strep (agalactiae) - ***recall BEL -group B, Escherichia, Listeria
MCC of CAP
Strep pneumoniae
MCC of bacterial sore throat
Strep pyogenes
Lancet shaped gram positive diplococci
Strep pneumoniae
Honey-colored crust, may cause post strep GN
Impetigo contagiosa
For TEN, separation of skin layers occurs at the
Dermo-epidermal junction
For SSS, separation of the epidermis occurs at the
granulosa layer
focus of osteomyelities arising in the metaphyseal area of a long bone caused by staph aureus
Brodie’s abscess
fever, strawberry tongue, centrigual sand-paper like rash, pastia’s lines of desquamation
scarlet fever
fever, hypotension, strawberry tongue, desquamating rash
Toxic Shock Syndrome of Staph aureus
Encapsulated Bacteria (Some Killers Have Pretty Nice and Shiny Bodies)
Strep pneumoniae, Klebsiella, Haemophilus, Pseudomonas, Neisseria meningitidis, Salmonella typhi, B group streptococci
DOC for Vancomycin RSA
Linezolid
DOC for PSGN
Pen G
DOC for MRSA
Vancomycin
Causes MARANTIC endocarditis in patients with abdominal malignancy
Streptococcus bovis
Causes endocarditis in patients who underwent GIT surgery
Enterococcus faecalis (group D)
BRAS
Bacitracin: group B resistant (agalactiae); group A sensitive (A=pyogenes)
Bile Optochin
Sensitive: strep pneumoniae; Resistant; strep viridans
2nd most common cause of UTIs in sexually active women
Staph saprophyticus
(+) test: red compound that can differentiate pyogenes and group D from other strep
PYR Test