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Bladder Trauma | 마이메르시 MyMerci
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Bladder Trauma

NCLEX Review Guide: Bladder Trauma

Pathophysiology & Classification

Types of Bladder Trauma

  • Blunt trauma accounts for 85-90% of bladder injuries, commonly from motor vehicle accidents or falls with pelvic fractures
  • Penetrating trauma from gunshot wounds, stab wounds, or iatrogenic injury during surgery represents 10-15% of cases
  • Extraperitoneal rupture occurs when the bladder wall tears below the peritoneal reflection, often associated with pelvic fractures
  • Intraperitoneal rupture involves tears in the dome of the bladder above the peritoneal reflection, allowing urine to leak into the peritoneal cavity

Extraperitoneal vs Intraperitoneal Rupture

FeatureExtraperitonealIntraperitoneal
LocationBelow peritoneal reflectionDome of bladder
Associated withPelvic fractures (85%)Full bladder at impact
Urine leakageInto pelvis/perivesical spaceInto peritoneal cavity
SeverityLess severeMore severe, requires surgery

Key Points

  • Bladder trauma rarely occurs in isolation - always assess for associated pelvic fractures and urethral injuries
  • A full bladder at time of impact increases risk of intraperitoneal rupture

Clinical Assessment

Signs and Symptoms

  • Gross hematuria is present in 95% of bladder trauma cases, but microscopic hematuria may be the only sign
  • Inability to void or decreased urine output despite adequate fluid intake indicates possible bladder injury
  • Lower abdominal pain, tenderness, and distention may indicate urine extravasation into surrounding tissues
  • Signs of peritonitis (rigid abdomen, rebound tenderness) suggest intraperitoneal rupture with urine in peritoneal cavity

Clinical Scenario

A 28-year-old male presents after MVA with pelvic fractures. He reports severe lower abdominal pain and has not voided since the accident 4 hours ago. Foley catheter insertion yields 50mL of bloody urine. What is your priority nursing action?

Answer: Stop catheter insertion, notify physician immediately, and prepare for cystography. Difficulty with catheter insertion may indicate urethral injury.

Memory Aid: "HEMATURIA"

  • Hematuria (gross or microscopic)
  • Extravasation of urine
  • Micturition difficulty
  • Abdominal pain/distention
  • Tenderness suprapubic
  • Urine output decreased
  • Rigidity if peritoneal involvement
  • Inability to void
  • Associated pelvic fractures

Diagnostic Procedures & Nursing Care

Diagnostic Tests

  • Cystography is the gold standard diagnostic test, involving bladder filling with contrast material and imaging
  • CT cystography combines the benefits of CT scanning with contrast visualization of bladder integrity
  • Never attempt retrograde urethrography if urethral injury is suspected - this can worsen the injury
  • Intravenous pyelography (IVP) may show delayed or absent bladder filling in cases of severe trauma

    Cystography Procedure

  1. Ensure patient consent and explain procedure
  2. Insert urinary catheter if not contraindicated
  3. Instill 300-400mL contrast material via gravity
  4. Obtain AP and lateral films with full bladder
  5. Drain bladder and obtain post-void film
  6. Monitor for contrast reactions and complications

Key Points

  • Retrograde cystography is preferred over antegrade methods for suspected bladder trauma
  • Post-void films are essential to detect contrast extravasation that may not be visible with full bladder

Treatment & Nursing Management

Conservative vs Surgical Management

  • Extraperitoneal ruptures are typically managed conservatively with prolonged catheter drainage (10-14 days)
  • Intraperitoneal ruptures require immediate surgical repair to prevent peritonitis and sepsis
  • Large extraperitoneal tears (>5cm) or those with bone fragments may require surgical intervention
  • Suprapubic cystostomy may be necessary if urethral injury prevents transurethral catheterization

Post-Operative Nursing Care

  • Monitor urinary output hourly - expect 30-50mL/hour minimum
  • Assess catheter patency and irrigate only if ordered by physician
  • Monitor for signs of infection: fever, cloudy urine, increased WBC count
  • Maintain strict intake and output records
  • Position patient to promote drainage and prevent catheter kinking

Memory Aid: "DRAIN"

  • Drainage assessment (patency, color, amount)
  • Record I&O strictly
  • Assess for infection signs
  • Irrigation only if ordered
  • No kinking of catheter

Complications & Patient Education

Potential Complications

  • Peritonitis from intraperitoneal urine leakage can lead to sepsis and death if untreated
  • Urinary tract infections are common due to prolonged catheterization and tissue trauma
  • Bladder contracture may develop from scar tissue formation, leading to decreased bladder capacity
  • Chronic incontinence can result from sphincter damage or inadequate healing

Discharge Teaching Points

  • Maintain adequate fluid intake (2-3L/day unless contraindicated) to prevent UTI
  • Report signs of infection: fever, burning, cloudy urine, strong odor
  • Follow up for catheter removal as scheduled - typically 10-14 days for extraperitoneal injuries
  • Avoid heavy lifting or straining until cleared by physician
  • Practice pelvic floor exercises as taught to improve continence

Key Points

  • Early recognition and appropriate treatment prevent life-threatening complications
  • Patient education about signs of complications is crucial for preventing readmission

Commonly Confused Concepts

Bladder vs Urethral Trauma

FeatureBladder TraumaUrethral Trauma
HematuriaUsually grossMay be absent initially
Catheter insertionUsually possibleDifficult or impossible
Associated injuryPelvic fracturesPelvic fractures, straddle injuries
TreatmentConservative or surgicalOften requires surgical repair

Quick Check

Question: A patient with suspected bladder trauma has difficulty with catheter insertion. What should the nurse do?

A) Use more force to advance the catheter
B) Try a smaller catheter size
C) Stop insertion and notify physician
D) Lubricate catheter more thoroughly

Answer: C - Difficulty with catheter insertion may indicate urethral injury, and forcing the catheter can worsen the trauma.

Common Pitfalls

  • ❌ Assuming absence of hematuria rules out bladder injury
  • ❌ Forcing catheter insertion when resistance is met
  • ❌ Irrigating catheters without physician order
  • ❌ Neglecting to assess for associated injuries

Remember: You've got this! Bladder trauma assessment requires systematic evaluation and prompt recognition of complications. Trust your clinical judgment and always prioritize patient safety. Every question you master brings you closer to your nursing license! 🌟

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