Urinary Tract Infection Cheat Sheet
UTIs, pyelonephritis, kidney stones, nephrotic syndrome and incontinence — the high-yield renal and genitourinary facts the NCLEX-RN loves to test.
What's in this cheat sheet
Most UTIs are caused by E. coli ascending from the urethra. This cheat sheet covers UTI classification and presentation (including the atypical confusion seen in older adults), the diagnostic workup and antibiotics, prevention and teaching, then expands into acute pyelonephritis, urinary calculi, and other key urologic conditions such as nephrotic syndrome and the five types of incontinence.
Overview & Classification
E. coli and ascending infection, upper vs lower and complicated vs uncomplicated UTIs, risk factors and clinical signs.
Diagnostics & Treatment
UA, urine C&S, blood cultures before antibiotics, first-line drugs and urinary analgesics that discolor urine.
Nursing Management & Teaching
Prevention, bladder irritants to avoid, and the repeat NCLEX theme of completing the full antibiotic course.
Pyelonephritis, Stones & More
Upper UTI and urosepsis, kidney stones, nephrotic syndrome, retention emergencies and the SOURF incontinence types.
Key Takeaways
High-yield facts most likely to appear on the NCLEX-RN.
E. coli is the most common UTI organism via the ascending route; catheter UTIs come from biofilm.
In older adults, a UTI may present as ONLY new confusion or a behavior change — no fever or dysuria.
Pyelonephritis = fever + CVA tenderness + flank pain; for urosepsis risk, draw blood cultures BEFORE antibiotics.
Nitrofurantoin treats lower UTI only (it doesn't reach kidney tissue); Pyridium turns urine orange — reassure the patient.
Always complete the full antibiotic course — patients feel better early but must still finish every dose.
Kidney stones: strain all urine, push fluids and control pain; ESWL breaks stones with sound waves and stone type guides diet.
1. Overview, Classification & Pathophysiology
Microbial invasion of the normally sterile urinary tract; bacteria are the most common cause, with E. coli accounting for ~80%.
Who is most at risk?
- Women — shorter urethra, close to the rectum
- Catheterized patients — biofilm on catheter surface
- Diabetes, HIV, immunosuppression
- BPH, neurogenic bladder, stones → urinary stasis
- Pregnancy; history of repeated UTIs
Classification
| Type | Key point |
|---|---|
| Upper UTI | Kidneys, pelvis, ureters — systemic signs (e.g. pyelonephritis) |
| Lower UTI | Bladder, urethra — usually local only (e.g. cystitis) |
| Uncomplicated | Normal anatomy; short 1–3 day course |
| Complicated | Obstruction, catheter, DM, pregnancy; 7–14 days |
Clinical manifestations
- Storage symptoms: dysuria, frequency, urgency, nocturia, incontinence
- Emptying symptoms: hesitancy, weak stream, retention, postvoid dribble
- Upper UTI / systemic: fever & chills, flank pain, CVA tenderness
2. Diagnostics & Treatment
Diagnostic workup
| Test | Key point |
|---|---|
| Dipstick UA | Nitrites, leukocyte esterase, WBCs — quick screen |
| Urine C&S | Confirms organism + sensitivity; clean-catch or catheter sample |
| CBC / BMP | Leukocytosis, kidney function, electrolytes |
| Blood culture | If urosepsis suspected — draw BEFORE antibiotics |
| CT / Ultrasound | Structural issues, obstruction, abscess (complicated cases) |
Antibiotic treatment
| Drug | Key points |
|---|---|
| TMP-SMX | First-line uncomplicated; check local resistance |
| Nitrofurantoin | Lower UTI ONLY — doesn't reach kidney; give with food; long-term → pulmonary fibrosis, neuropathy |
| Ciprofloxacin | Complicated UTI, pyelonephritis |
Urinary analgesics
- Pyridium — relieves pain/urgency; turns urine reddish-orange (warn the patient)
- Urised — symptom relief; may turn urine blue-green
3. Nursing Management & Teaching
Prevention & interventions
- Push fluids ~33 mL/kg/day to flush the urinary tract
- Void every 3–4 hours and after intercourse
- Wipe front to back; avoid unnecessary catheterization, remove catheters early
- Cranberry may reduce bacterial adhesion; encourage bowel regularity
Acute care & home teaching
- Avoid bladder irritants: caffeine, alcohol, citrus, chocolate, spicy foods
- Warm compress to suprapubic/lower back for discomfort
- Complete the full antibiotic course — stopping early = resistance
- Report persistent symptoms, fever, or new flank pain
4. Pyelonephritis, Stones & Other Urologic Conditions
Acute pyelonephritis (upper UTI)
- Bacterial infection of the renal parenchyma; mostly ascending E. coli
- Classic: fever & chills, flank pain, CVA tenderness, N/V + lower UTI symptoms
- Severe → hospitalize for IV antibiotics; outpatient → oral fluoroquinolone 10–14 days
- Repeated episodes → renal scarring → chronic kidney disease
Urinary calculi (kidney stones)
- Renal colic — sudden severe flank/groin pain; hematuria; N/V
- Pain control (NSAIDs/opioids), IV hydration, antiemetics
- Strain all urine — save the stone for analysis to guide diet
- ESWL (lithotripsy) breaks stones with sound waves; surgery for large/obstructing stones
Other key conditions
| Condition | Key facts |
|---|---|
| Nephrotic syndrome | Triad: massive proteinuria + hypoalbuminemia + edema. Priority = edema management: daily weights, strict I&O, low sodium. |
| Interstitial cystitis | Chronic urgency/frequency/pelvic pain with NO infection. Voiding diary; avoid irritants; bladder training. |
| Urinary retention | Emergency — inability to empty → distension/pain, common in BPH. Catheterize promptly as prescribed; do NOT delay. |
Incontinence — SOURF types
| Type | Cause | Intervention |
|---|---|---|
| Stress | Weak pelvic floor; leaks with cough/sneeze | Kegel exercises |
| Overflow | Bladder overfills → dribbles | Timed voiding, catheter |
| Urge | Overactive bladder; sudden urge | Bladder training, anticholinergics |
| Reflex | No sensation; neurologic cause | Intermittent cath |
| Functional | Mobility/cognitive barrier | Timed voiding, environment changes |
UTI & Renal Self-Test
6 quick questions — answers reveal after you submit.
Q1. An 82-year-old is brought in for new-onset confusion with no fever or dysuria. Which condition should the nurse suspect first?
Q2. A client is prescribed Pyridium (phenazopyridine) for UTI discomfort. What teaching is essential?
Q3. A client with suspected pyelonephritis and possible urosepsis is to receive IV antibiotics. What must the nurse do first?
Q4. Which instruction is correct for a client passing a kidney stone?
Q5. Nitrofurantoin is prescribed for a client. Which UTI is this drug appropriate to treat?
Q6. A client with nephrotic syndrome has generalized edema. What is the nurse's priority assessment?
Answered 0 / 6 — unanswered count as incorrect.