2- Urologic Emergencies Flashcards
At what size does a kidney stone become symptomatic w/ pain and obstruct the ureter?
≥ 2-3 mm in size
What is the most common composition of a kidney stone? Are they radiolucent or radiopaque?
Calcium salts
Radiopaque
Struvite stones indicate what? Are they radiolucent or radiopaque?
Infection
Radiopaque
How will a pt w/ renal colic present?
Sudden onset colicky unilateral flank pain w/ radiation to groin as stone passes into lower ureter (pain equal to labor), N/V, urinary frequency, hematuria
What is the imaging of choice for evaluating renal colic?
Non-contrast CT
What imaging is used in pregnant, children or pt w/ previous hx of stones?
Renal US (identifies hydronephronis, +/- stone)
The majority of what size kidney stones will pass spontaneously?
Usually pass if < 5 mm, will not pass if > 8 mm
What is the tx for renal colic?
Pain relief, anti-emetic, ABX, alpha 1 blocker, watchful waiting
Admit if “sick”
What are definitive txs for a ureteric stone (intractable pain, fever, renal function, 4 wks)?
ESWL (lithotripsy)
PCNL (nephilithotomy)
Ureteroscopy
Open surgery
For what size stones will medical explusion therapy (CCB, a-blocker, flowmax) have an effect?
5-10 mm => increased passage
If pt is not able to pass a stone what can provide temporary relief?
JJ stent
Percutaneous nephrostomy tube (common in pregnant pts)
Renal colic is aka what?
Urolithiasis
What is a painful inability to void w/ relief of pain following drainage of bladder by cath?
Acute urinary retention
What is the most common causes of obstructive urinary retention in men > 50 yo?
Prostatic Hyperplasia
What are the general causes of urinary retention? (4)
Obstructive
Pharmacologic
Inflammatory
Neurogenic (spinal cord trauma/tumor, MS)
What are the exam findings for pt w/ urinary retention?
Abdominal/bladder distention
Large amount urine in post void residual (PVR)
What volume of urine is concerning for urinary retention?
> 100-150 ml
- <50-100 ml = normal
What is the initial management for acute urinary retention?
Urethral cath/Suprapubic cath
Continuous bladder irrigation if blood clots
Monitor pt for 24 hrs post decompression and d/c home w/ drainage bag and urology f/u in 3-5 days
What is the late management for acute urinary retention?
Tx underlying cause
What is the most common pathogen of uncomplicated cystitis?
E. coli (due to fecal flora colonization)
If pt presents w/ urinary sx but has no vaginitis or cervicitis on exam, are they likely to have UTI?
Yes! 90% likelihood
If pt presents w/ urinary sx and has cloudy urine, are they likely to have UTI?
Yes 96% likelihood
T or F: Cystitis is a clinical dx supported by UA, culture and hx/PE.
TRUE!
Always order UA if Sx not clear Male, back pain, looks sick IMC HX multi course ABX Hx of ABX resistance HX of mult drug allergies
What are the infectious disease society of American guidelines for when to tx cystitis?
Urine culture ≥ 100,000 CFU/ml
+ leukocyte ester & nitrates (Pyuria)
When should pelvic exam be performed in pt w/ suspected cystitis?
Vaginal d/c, sick, return visit
What should be included on PE for pt w/ suspected UTI?
CVA percussion
Are Culture and imaging indicated for dx of routine UTI?
Not usually
What is the ABX tx for cystitis?
Macrobid X 5 days Bactrim DS > 3 days (don't use if high e. coli resistant strains) Fosfomycin 3g single dose Cephalosporins X 7 days Aumentin x 7 days
What ABXs are NOT allowed in the tx of UTI?
Fluoroquinolone (Cipro) - black box warning (only use if no other tx options for uncomplicated UTI)
- Concern for tendon rupture (especially older pts w/ concomitant steroid use)
Amoxicillin - too much resistant
Who is at risk for complicated UTI?
Men Elderly Hospital acquired Pregnancy Indwelling urinary cath/recent instrumentation Children Recent ABX use DM/IMC
A complicated UTI is evaluated/tx similar to what?
Pyelonephritis. Labs and longer ABX
What is an ascending infectious inflammatory process involving the kidney parenchyma and renal pelvis?
Pyelonephritis
A pt w/ pyelonehpritis will present w/ lower UTI sx + what?
Fever, chills, rigors OR
N/V OR
Diaphoresis OR
Flank and/or abdominal pain
What do you specifically expect to look for on UA of pt w/ suspected pyelonephritis?
WBC casts
What ABX is NOT used in the TX of pyelonephritis?
Macrobid