urinary Flashcards
Name where in the urologic tract a patient can experience an obstruction and the causes
Renal pelvis- stomach of the kidney; Cause: renal calculi
Ureter- takes urine from kidney to bladder; Cause: renal calculi, pregnancy, tumors
Bladder or pelvis; Cause: bladder cancer, neurogenic bladder, prostatic hyperplasia, prostate cancer, urethral strictures.
Describe the potential complications of urinary stasis and back-up pressure.
o Urinary stasis complications: infection, recurrent UTIs
o Back-up pressure complications: hydroureter, hydronephrosis, postrenal acute kidney injury.
Differentiate between hydronephrosis and hydroureter
Hydroureter: enlarged d/T backup of urine and increased pressure
Hydronephrosis: kidney is holding urine
Discuss why the manifestations of acute urologic obstruction can vary from person to person
Depends on the site, cause, and speed of onset
renal calculi: definition, size, shape
Definition: clumps of crystals in the urinary tract
Size: small (grain of sand) or large (golf ball)
Shape: smooth or jagged
Most common cause of renal obstruction.
Risk factors for nephrolithiasis
Sex: men, age: 20-30s, race: white, family hx, congenital defects, weather, obesity
specific risk factors for the 3 major types of kidney stones.
Calcium oxalate or calcium phosphate (70-80%)-IDIOPATHIC, Family hx, ↑ calcemia, ↑ oxaluria.
Struvite (15%)- UTI
Uric acid (7%) gout
most preventable cause of Calcium oxalate stones is _ and _ _.
dehydration & low UOP
Diet high in _, _ _ &, _ can cause these stones as well.
Na, oxalate intake & protein
patho for nephrolithiasis.
Urine is a solution of solvent (water) & solutes (particles).
Problem: super-saturation with a solute therefore crystals begin forming in the NEPHRON.
Crystal formation is enhanced by: PH changes: UTI, Excessive concentration of insoluble salts in the urine d/t dehydration, bone disease, gout, renal disease, Urinary stasis: immobility/sedentary lifestyle.
CM for nephrolithiasis.
Pain of Acute Renal Colic:
– location – “flank”
– radiation – “lower abd and groin”
– spasms – “colicky” last 20-60 minutes
– intermittent – “ureter spasms”
– sharp - “calculi scrape the ureter wall”
Accompanying symptoms:
– N/V
– Dysuria
– Chills, Fever →ONLY if infection is present
– Hematuria
– Foul smelling urine
– Diaphoresis
where do crystals begin forming
in the nephrons
pharmacotherapy of nephrolithiasis, including acute pain management and preventive management.
Acute pain: morphine or NSAIDS, IV fluids
Preventative meds:
Calcium= thiazide diuretics
Struvite= antibiotics
Urate= allopurinol
PYELONEPHRITIS (other names for this) & definition
UPPER UTI, KIDNEY INFECTION.
inflammation of kidneys
Risk factors for PYELONEPHRITIS
pregnancy, recurrent lower UTIs, abx resistant strain.
Protective factors for UTIs (Pulled from NUR 325.)
PH=acidic, presence of urea, men=prostatic secretions, women=urethral gland secretions, urine flow id unidirectional, immune system
etiology for pyelonephritis
ascending infection (starts at bottom & goes up the tract) or bloodstream infection (Ex. E. coli)
patho for pyelonephritis
Kidneys become inflamed & filled with infectious exudate.
Inflammatory response from untreated or recurrent UTIs can lead to kidney tissue DAMAGE.
Abscesses & necrosis can develop impairing renal function.
CM for pyelonephritis
Sudden onset: fever, chills, CVA tenderness
Lower UTI symptoms: dysuria, frequency, urgency
Hematuria
N/V, anorexia
Define urosepsis and describe the typical patient population who experiences it.
potentially life-threatening condition that occurs when a UTI spreads to the kidneys and causes sepsis, the body’s response to infection.
It’s a severe systemic response and has high mortality rates.
Ex. ELDERLY
Describe the different types of antibiotic therapy that can be used for UTI, and the factors that influence the treatment regimen.
Meds: Trimethoprim/sulfamethoxazole, Ciprofloxacin, nitrofurantoin
Community acquired = short course abx
Recurrent= 7-14 days, may need IV abx
Get UA, culture & sensitivity to determine severity of organism.
Trimethoprim/sulfamethoxazole (Bactim)
Class: Sulfonamides
MOA: don’t destroy bacteria but inhibit their growth= bacteriostatic by preventing the synthesis of folic acid needed for DNA synthesis
Indication: uncomplicated UTIs, respiratory infections, salmonella, shigellosis
SE: photosensivity
NC: ‘Sulfa allergies’
Ciprofloxacin (Cipro)
Class: Fluoroquinolones
MOA: destroy bacteria by altering their DNA. Interfere with the bacterial enzymes DNA gyrase and topoisomerase
Indications: UTIs, some STIs, upper and lower respiratory tract infections, gonorrhea, and other infections. anthrax: infection with Bacillus anthracis
SE: arthropathy (joint disease), often irreversible. Prolonged post-antibiotic effects: concentrated in the neutrophils.
NC: PO, IV, Topical. Minimal penetration of the BBB/CSF. Avoid in patients <18 & >60.
List the top 2 causes of end stage kidney disease (list the other causes as well)
Top 2 causes: DM-50%, HTN-30%, glomerulonephritis-10%, Other-10%
major risk factors for CKD
Family history, Increasing age (>60), Male, Black/African American, HTN, DM, smoking, Overweight and obesity
2 major signs of worsening CKD
Increased angiotensin 2 & proteinuria
CV s/s of CKD
HTN, HF, CAD, PAD, pericarditis
GI s/s of CKD
anorexia, N/V, GI bleeding, gastritis