Urinary Tract infections Flashcards
How much post void residual is normal?
50ccs left in bladder
Look by US
What are the common bloodborne UTI microbes?
TB
G- Sepsis
WHat are the risk factors for UTI?
Prior History Reflux Uncircumcised Sexual intercourse, esp frequency Inherited factors Obstruction(prostate/stones)
What is symptomatic vs Asymptomatic UTI?
Symp: >10^5 CFU single species E. coli 80%, Staph Saprophiticus 15% Asymp: >10^5 CFU ss Treat in preggo, renal transplant, b4 uro surgery Nursing home Don't treat/check with foley in place
What is clean catch?
Void a bit, toss it. then collect.
discard 1st 15-20ccs in a Cath sample
What can tell you that you have a possibly contaimnated urine specimen?
High White count/Epithelial cell ratio(= means contaminated)
What are the most commnly used UA metrics in diagnosing a UTI
pH Specific Gravity (1.010 is normal Nitrites Leukocyte Esterase WBC RBC
WHat is the difference in the findings between the 1st and 2nd catch UA? (split urine)
1st: Tells you environment of the Urethra
2nd: Environment of the Bladder
What is the Empiric Tx of a UTI (G- or Chlamidia)?
Ceftriaxone, Azithromycin
What is seen in UA if theres a bacteria with urease?
pH higher than 6.0
WHat does a lactate level tell you?
Systemic tissue perfusion. Hypoperfusion increases Lactate level
What is charicterisitic of Pyelonephritis?
Upper tract infection Tissue infection instead of space Flank pain, fever UA findings similar to cystitis AVOID a Foley with Pyelonephritis If obstructed with a stone it becomes an abcess!
