microbiology Flashcards
what is Ramsay-Hunt syndrome
reactivation of herpes virus in the geniculate ganglion
which organism if found in bacteraemia is NEVER a contaminant
coagulase negative staph
gram stains for meningitis organisms
Strep pneumo = gram +ve diplococci Neisseria meningitidis = gram -ve cocci H. influenzae = gram -ve rod group B strep = gram +ve cocci Listeria = gram +ve rod E coli = gram -ve rod
why is sepsis more dangerous in the elderly
sometimes don’t mount a fever or raise their WCC
typical CSF of viral meningitis
normal pressure
high WCC - mostly lymphocytes
normal glucose
low protein
gram positive and negative colours on gram stain
\+ve = blue -ve = pink
what type of infection does chemotherapy predispose to
neutropaenia –> bacterial sepsis
complications of staph aureus bacteraemia
infective endocarditis
septic arthritis
osteomyelitis & discitis
what do you order in a septic screen
FBC blood cultures urine MCS Sputum MCS Stool MCS CXR \+/- CSF MCS
treatment of cystitis in pregnant women
cephalexin (3 days) or
nitrofuratoin (5 days) or
amoxycillin-clavulonate (5 days)
treatment of cystitis in non pregnant women
trimethoprim (3 days) or
cephalexin (5 days) or
amoxycilin+clavulanate (5 days) or
nitrofuratoin (5 days)
which organism is it that comes from uncooked chicken
Campylobater
treatment of prostatitis
fluroquinolone for 4-6 weeks
what type of infection dare post splenectomy patients predisposed to
pneumococcal infection
treatment of cystitis in men
exclude abnormal urinary tract, then
trimethoprim (14 days) or
cephalexin (14 days) or
amoxycilin+clavulanate (14 days)
typical CSF of bacterial meningitis
high pressure
high WCC
low glucose
high protein
Which gram positive and gram negative bacteria found in the blood is ALWAYS important (never a contaminant or uncertain significance)
Strep pneumonia - GP
Bacteroides spp - GN
main 4 causes of uncomplicated UTI
E coli
Staph saprophyticus
Klebsiella pneumonia
Proteus mirabilis
signs and symptoms of pyelonephritis
flank pain
Costo-vertebral angle tenderness
fever
rigors
