Blood where it shouldn't be: GU trauma
A trauma bay, a pelvic fracture, and blood at the tip of the penis — and the single most important thing you can do is not pass the catheter you're about to reach for. Most kidneys are saved without an operation; the urethra is saved by leaving it alone until you've imaged it.
The one-liner
Blood at the meatus + pelvic fracture = retrograde urethrogram BEFORE any catheter. Most renal trauma is managed non-operatively; an arterial blush gets angioembolization. Intraperitoneal bladder rupture goes to the OR; extraperitoneal usually heals on a catheter. AAST grade and hemodynamics drive everything.
Genitourinary trauma rarely arrives alone — it comes inside a trauma activation, behind a primary survey, attached to a fractured pelvis or a stab wound or a man who fell onto his perineum. Urology owns the GU plan but not the patient, and the discipline is knowing which injuries demand the OR and which are made worse by intervening. More than almost anywhere else in the specialty, the mistake here is doing something rather than nothing.
The one that gets tested: don't cath the urethra you haven't imaged
A pelvic fracture, blood at the urethral meatus, a high-riding prostate, or an inability to void is a urethral injury until proven otherwise. The reflex to relieve the bladder with a Foley is exactly the wrong move: passing a catheter blindly can convert a partial urethral tear into a complete disruption.
Blood at the meatus plus a pelvic fracture means a retrograde urethrogram before any catheter. If the urethra is disrupted, the bladder is drained from above with a suprapubic tube, and the repair — urethroplasty — is done weeks later, electively, by someone who does them.
What everyone gets wrong
Equating “injured kidney” with “operation.” Most renal trauma is managed non-operatively, even high grades, as long as the patient is hemodynamically stable. The kidney sits inside Gerota’s fascia, which tamponades bleeding, and opening it in an unstable explorative laparotomy often ends in a nephrectomy that was never needed. Stability, not grade alone, decides who goes to the OR.
The renal grading shorthand (AAST)
The American Association for the Surgery of Trauma grades renal injury I–V by depth and what’s involved:
- I–II — contusion, subcapsular or small perirenal hematoma, shallow laceration. Manage non-operatively.
- III— deep laceration (> 1 cm) without collecting-system involvement.
- IV — laceration into the collecting system, or a segmental vascular injury. A contained arterial blush on CT in a stable patient is the classic case for angioembolization, not surgery.
- V— a shattered kidney or avulsion of the main renal artery/vein. An unstable grade V is the one that gets explored — and you control the vessels before you open Gerota’s.
The imaging that makes this possible is a CT with a delayed (excretory) phase — without the delayed images you will miss a collecting-system leak entirely.
The bladder: where the rupture is decides the plan
Bladder injury pairs with pelvic fracture and gross hematuria, and a CT cystogram (the bladder actively filled with contrast) makes the diagnosis. The whole management hinges on where it tore:
- Extraperitoneal rupture — usually heals on catheter drainage alone, ~10 days, then a cystogram to confirm sealing.
- Intraperitoneal rupture — urine spilling into the abdomen needs surgical repair, full stop. So does any injury involving the bladder neck or trapping a bone fragment.
Penile fracture: the pop and the eggplant
A tunica albuginea ruptureduring intercourse — a sudden “pop,” immediate detumescence, and an eggplant deformityfrom the hematoma. This one breaks the “do nothing” theme: it is a surgical emergency for prompt exploration and repair to preserve erectile function, and you check for an associated urethral injury (blood at the meatus, inability to void) before you finish.
The iatrogenic ureter
Not all GU trauma comes from a car. A ureter injured during a pelvic operation follows a simple rule: recognized at the table, repaired at the table (over a stent); recognized late, stented first and reconstructed at around six weeks once the inflammation settles.
If you remember one thing
In the trauma bay, GU restraint is a skill. Image the urethra before you catheterize it, let the stable injured kidney heal itself, and reserve the OR for the unstable patient, the intraperitoneal bladder, and the fractured penis. Knowing when not to act is most of the job.