Digital Rectal Examination Before Urinary Catheterization

Rationale for Digital Rectal Examination

The digital rectal examination (DRE) is a critical screening tool that must be performed before catheterization in pelvic trauma patients to detect clinical signs suggesting urethral injury, including high-riding or non-palpable prostate, rectal wall weakness or blood, and ano-rectal lesions, as recommended by the World Journal of Emergency Surgery and The Journal of Urology 1, 2, 3
High-riding or non-palpable prostate indicates urethral disruption with superior displacement, according to the World Journal of Emergency Surgery 1, 2
Rectal wall weakness or blood suggests associated rectal injury, present in up to 5% of urethral trauma cases, as reported by the World Journal of Emergency Surgery 2
Ano-rectal lesions occur in 18-64% of pelvic trauma cases, according to the World Journal of Emergency Surgery 1

The American Urological Association recommends examining for high-riding prostate, rectal blood, and wall integrity before catheterization in pelvic trauma patients 1, 2, 3
Blood at the urethral meatus is a sign of urethral injury, as indicated by the World Journal of Emergency Surgery and The Journal of Urology 2, 3
Perineal or scrotal hematoma is a sign of urethral injury, according to the World Journal of Emergency Surgery 1, 2
Inability to void or urinary retention is a sign of urethral injury, as reported by the World Journal of Emergency Surgery 2
Suprapubic fullness is a sign of urethral injury, according to the World Journal of Emergency Surgery 2

Blind catheter insertion without prior evaluation can cause catastrophic complications, including complete urethral transection, stricture formation, impotence, and urinary incontinence, as warned by the World Journal of Emergency Surgery 1
In 7-25% of pelvic ring fractures, the lower urinary tract and urethra are damaged, yet approximately 23% of these injuries are missed at initial evaluation, according to the World Journal of Emergency Surgery 1

Given the multiple orthopedic injuries from motor vehicle collision, this patient has high risk for pelvic fracture-associated urethral injury (PFUI), as indicated by the World Journal of Emergency Surgery and The Journal of Urology 2, 3
If the DRE reveals a high-riding prostate or other concerning findings, retrograde urethrography must be obtained before any catheterization attempt, as recommended by the World Journal of Emergency Surgery and The Journal of Urology 2, 3
If urethral injury is confirmed, urinary drainage should be established via suprapubic catheter rather than urethral catheterization, according to the World Journal of Emergency Surgery and The Journal of Urology 2, 3