Genitourinary Flashcards
An upper urinary tract infection involves what structures?
kidney and/or ureters
A lower urinary tract infection involves what structures?
bladder and/or urethra
What is the most common pathogen that causes a UTI?
Escherichia Coli (E. Coli)
S/S of Lower Urinary Tract Infection
(cystitis, urethritis, prostatitis)
-NO FLANK OR CVA TENDERNESS
- dysuria
- frequency/urgency
- suprapubic pain
- hematuria w/ bacteruria
- fever
- chills
S/S of Upper Urinary Tract Infection
(Pyelonephritis, abscess)
- FLANK PAIN and/or CVA Tenderness
- fever
- hematuria
- N/V
- malaise
- rigors
- tachypnea
- tachycardia
What is the diagnostic gold standard test to diagnose a UTI?
Positive Urine Culture - detection of bacteria in the culture
How long does it take for urine culture results to be available after collection?
24 hrs
What is the term for the presence of
> 10 leukocytes/ml in urine?
pyuria
Bacteriuria is when there is > __?__ bacteria/ml of urine?
> 100,000
- indicates active infection
Leukocytosis with a shift to the left is indicative of what urinary tract disorder?
Pyelonephritis
- shift to the left means increased number of immature WBCs, usually band cells which are immature precursors
What tests are done to r/o obstruction, calculi or urinary retention?
- post void residuals
- CT abd/pelvis w/ and w/o contrast
- Pelvic Ultrasound
- MRI pelvis w/ and/or without contrast
What should be suspected in a patient with a UTI related fever lasting longer than 3 days?
obstruction or abscess
- abd imaging (CT, US, MRI)
- urology consult
What labs should be done if a UTI is suspected?
- Clean catch midstream Urinalysis
- Urine dipstick test
- CBC (leukocytosis w/ shift to left)
- blood culture (pyelonephritis, sepsis)
What are the 4 first line ABX used to treat acute cystitis?
- Fosfomycin
- Macrobid
- Sulfonamides
- TMP-SMX aka Bactrim DS
- Trimethoprim
What is the generic name for Nitrofurantoin monohydrate/macrocrystal?
Macrobid
When should Fluoroquinolones be used in the treatment of acute cystitis?
As a second line therapy and should only be used when there is no other option due to the severity of adverse effects
- end in -oxacin
- cause tendonitis, tendon rupture, disorientation
What is the treatment for an uncomplicated upper UTI (pyelonephritis)?
Treated as an outpatient
- Fluoroquinolones (ciprofloxacin)
- Sulfonamides (TMP-SMX aka Bactrim DS)
- Oral B-lactams (amoxicillin-clavulanate)
Sulfonamides should be used with caution in patients with _______ when treating an UTI?
impaired renal function
- sulfonamides are nephrotoxic
Levofloxacin is used to treat what kind of UTI?
Cystitis -complicated lower UTI
What are the fluoroquinolone ABX?
- ciprofloxacin
- levofloxacin
Ciprofloxacin and levofloxacin are what classification of ABX?
Fluoroquinolones
What is the treatment for a complicated lower UTI (cystitis)?
- Levofloxacin
- ceftriaxone
- piperacillin/tazobactam (zosyn)
- aminoglycoside with ampicillin
What is the treatment for a complicated upper UTI (pyelonephritis)
- Fluoroquinolones (ciprofloxacin)
- Sulfonamides (TMP-SMX aka Bactrim DS)
- Oral B-lactams (amoxicillin-clavulanate)
- piperacillin/tazobactam (zosyn)
- aminoglycosides (not use as monotherapy)
What are common s/s of a UTI in the elderly?
- altered LOC
- lethargy
- delirium
Cause(s) of pre-renal AKI?
Decreased renal perfusion d/t:
(1) Volume depletion:
- hemorrhage
- GI loss (diarrhea, vomit, pancreatitis)
- increased UO (diabetes insipidus, diuretics)
- edema or 3rd spacing (burns, wounds)
(2) Vasodilation decreases blood flow
- sepsis
- anaphylaxis
- pancreatitis (increase cytokine release = increase premeability)
- drugs (ACEI, NSAIDs, diuretics)
(3) decreased CO decreases renal perfusion
- severe systolic HF
- MI
- cardiogenic shock
(4) Vasoconstriction or arterial occlusion
Lab findings indicative of a Pre-renal AKI?
- oliguria (little to no UO)
- urine sodium < 20 mEq/L (low)
- urine osmolality > 500 mOsm/L (high)
- urine specific gravity > 1.020 (high)
- BUN/creatinine ration > 20:1 (high)
- hyperuricemia
- increased ADH secretion
Will Urinary sodium be high, low, or normal in a patient with a Pre-renal AKI?
low (< 20 mEq/L)
Will Urinary osmolality be high, low, or normal in a patient with a Pre-renal AKI?
high (> 500 mOsm/L)
Will Urinary specific gravity be high, low, or normal in a patient with a Pre-renal AKI?
high (> 1.020)
What are the 3 types of Intrinsic or Intra-renal AKIs?
- acute glomerulonephritis
- acute tubular necrosis
- vascular