Staphylococcus Aureus Bacteraemia

Question 1

is staphylococcus gram negative or positive?

Answer 1

gram positive

Question 2

risk of staph colonisation is higher in….

Answer 2

insulin dependent diabetes,
HIV,
haemodialysis,
skin damaged individuals

Question 3

where is staph colonisation most likely to occur?

Answer 3

anterior nares,
skin, 
vagina, 
axilla, 
perineum, 
oropharynx

Question 4

frequent sites of staph distant metastases?

Answer 4

bone and joints,
epidural space and intervertebral discs,
native and prosthetic cardiac valves,
cardiac devices,
visceral abscesses in spleen, kidneys and lungs

Question 5

Investigations for staph aureus infection

Answer 5

microscopy, 
blood cultures, 
repeated blood cultures after 48 and 72hrs after therapy,
Xray,
CT,
MRI, 
radionuclide imaging, 
transthoracic echocardiogram

Question 6

best antibiotics for staph aureus?

Answer 6

flucloaxacillin (14 days),
teicoplanin,
linezolid (bone penetration),
daptomycin

Question 7

1st line antibiotic for treatment of staph aureus infection?

Answer 7

flucloxacillin