UTI Flashcards
What is an uncomplicated UTI
infection in Structural and neurologically normal Urinary tract
What is a complicated UTi
infection in urinary tract with functional or structural abnormality e.g. in men, pregnant women, children, hospitalised
What are the causative organisms for UTI
E coli Proteus Klebsiella Enterococcus faecalis Staph saprophyticus Staph epidermidis
What are distinguishing features of Staph saprophyticus
coag negative
associated with infections in young woimen
What are distinguishing features of Staph epidermidis
presence of prosthesis (procedures, indwelling catheters
What are causes of obstruction to consider for UTI
Mechanical
Neurogenic
what are mechanical causes of obstruction in UTI?
extrarenal:
- valves, stenosis
- calculi
- BPH
renal:
- nephrocalcinosis
- nephropathy
- PKD
Whag are neurogenic causes of obstruction?
poliomyelitis
Diabetic neuropathy
Spinal cord injury
What is the issue caused by vescicoureteric reflux
maintains residual pool of urine after voiding in the bladder
This reflux causes scarring of kindeys
what pathogen causes abscess in the kidney?
S aureus
What are investigations for uncomplicated UTI
urine dip
MSU for MS&S
Bloods FBC, U&E, CRP
What are ix for complicated UTI
Renal USS
IV urography
When should you NOT do a dipstick for UTI
if patient is older than 65
because half of them will have bacteraemia regardless
Why are nitrites so specific for UTI
because they are produced by E coli
What does nitrite -ve, leukocyte +ve indicate
UTI caused by non-coliform bacterium
