Flashcards in Urinary Tract Infections Deck (26)
Commensal flora in the kidneys/ureter
Commensal flora in the bladder
Almost always sterile
Commensal flora in the urethra
Perineal flora (skin/lower GI tract flora)
What organisms make up the perineal flora?
Skin flora-coagulase -ve staphylococci
Lower GI flora-anaerobic bacteria,aerobic bacteria (enterobacteriaeceae), gram +ve cocci-enterococcus
Symptoms of cystitis
Upper UTI- infection of kidney and/or pelvis
What additional symptoms do you get in pyelonephritis?
Fever or other evidence of systemic infection
Abacterial cystitis- symptoms of UTI without infection
Who typically gets urethral syndrome?
What are the possible causes of urethral syndrome?
Hypersensitivity reactions, hormone imbalances etc.
Who defined 'significant bacteriuria' and what level is classes as significant?
what does cfu stand for?
colony forming units
Significant bacteriuria with a single organism but no symptoms of UTI
Pus cells in urine, no organisms grown
Predisposing factors for UTI
Urinary stasis-pregnancy, prostatic hypertrophy, stones, strictures, neoplasia, residual urine
Congenital abnormalities e.g. vesico-ureteric reflux
Sources of UTI infection
Fistulae-genital/GI tract to urinary tract
3 causes of sterile pyruia
Inhibition of bacterial growth e.g. unprescribed antibiotics
Fastidious (hard to grow) organisms
Urinary tract inflammation
4 types of investigations for someone with a UTI
Name 5 types of urine samples
early morning urine (whole contents of bladder_
When would you carry out an early morning urine test?
Suspected urinary TB
When would you carry out a blood test?
Name 4 UTI antibiotics
When woudl you treat asymptomatic bacteriuria
Pregnant women, infants or prior to urological procedures
How does the course of antibiotics for cystitis vary between men and women?
Longer course for men (7 days compared to 3)