What clinical sign would suggest a potential urethral injury?

• A. Severe abdominal pain
• B. Blood at the meatus
• C. Flank pain
• D. Nausea and vomiting

Answer: (B)

Blood at the meatus is a significant clinical sign that suggests a potential urethral injury, especially in the context of pelvic fractures or penetrating injuries to the pelvis. When blood is observed at the urethral opening, it raises the suspicion of a possible laceration or disruption of the urethra, as this could indicate that the injury has affected the urethral tissue.

In management protocols for trauma, the presence of blood at the meatus typically warrants further evaluation, such as imaging studies or a retrograde urethrogram, to assess the integrity of the urethra before any procedures like catheterization are attempted. This precaution is taken because attempting to place a catheter in the setting of a urethral injury can exacerbate the damage.

Other signs such as severe abdominal pain, flank pain, and nausea and vomiting, while significant in a surgical context, do not specifically point to a urethral injury. Severe abdominal pain may indicate intra-abdominal issues, flank pain could suggest renal injuries, and nausea and vomiting are nonspecific symptoms that may follow many types of trauma or gastrointestinal conditions. Therefore, the precise and indicative nature of blood at the meatus makes it a critical sign in the assessment of potential urethral injury.