A 47-year-old man presents to the emergency department 1 hour after a straddle injury sustained when he fell across a fence rail while trimming branches. He reports acute perineal and scrotal pain. Vital signs are stable: BP 128/82 mmHg, HR 88 bpm, RR 16. On examination, there is gross hematuria with blood at the urethral meatus, significant perineal ecchymoses, and a rapidly expanding scrotal hematoma. Abdominal and rectal examinations are unremarkable. Pelvic radiograph demonstrates soft tissue swelling but no fractures. Which of the following urethral segments is most likely to have sustained traumatic injury?
- A)Prostatic urethra
- B)Membranous urethra
- C)Bulbous (spongy) urethraGABARITO
- D)Penile (anterior) urethra
- E)Urethral meatus
Explicação
The bulbous (spongy) urethra is the segment most vulnerable to straddle injuries. This portion of the anterior urethra lies superficially within the corpus spongiosum, positioned between the perineal body and the penile bulb—directly exposed to blunt trauma fr... Ver explicação completa e trilha adaptativa →