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How to

How To: Manage Extraperitoneal Bladder Rupture

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Extraperitoneal bladder rupture is a relatively uncommon injury, but is easily managed in most cases. It is associated with a blunt mechanism, and concomitant fracture of the pubic rami or spreading of the symphysis pubis is nearly always present. In the old days, we used to think that the bladder injury was due to penetration anteriorly by bony fragments, but this is probably an old wives tale. It’s more likely due to hydraulic forces occurring within the bladder at the same time the pelvic ring is being deformed or spread apart by blunt forces.

If you obtain a pelvic x-ray during the initial trauma evaluation and see any fractures or diastasis around the symphysis, think bladder injury. Placement of a urinary catheter will typically drain plenty of urine, which will usually be grossly bloody.

Once the injury is suspected, the diagnostic test of choice is a CT cystogram. Don’t confuse this with the images seen when the bladder passively fills with contrast when the catheter is clamped. There is not enough pressure in the bladder to guarantee that contrast will leak out, so this type of study may be falsely negative.

True CT cystogram technique requires filling the bladder with at least 350cc of dilute contrast under pressure by hanging it on an IV pole, then clamping the catheter. Once the bladder is filled, the scan can proceed as usual. But after it is complete, a second limited scan through the pelvis must be performed after the contrast has been evacuated by unclamping the catheter. This allows visualization of small contrast leaks that might otherwise be masked by all the contrast in the bladder.

Here’s a nice sagittal image of an extraperitoneal injury from radiologypics.com:

Note how the contrast dissects around the bladder but does not enter the peritoneal cavity.

Extraperitoneal injuries usually do not require repair and will heal on their own. However, if the symphysis pubis needs instrumentation to restore anatomic position, concomitant repair of the bladder is frequently necessary to keep the hardware from being contaminated by urine.

Bottom line:

  • Suspect an extraperitoneal bladder injury in anyone with bony injuries involving the symphysis pubis.
  • Don’t order a urinalysis in trauma patients!
  • Use CT cystogram technique to make the diagnosis.
  • Treatment is simple: leave the urinary catheter in place for 10 days. No urology consult is needed.
  • Then repeat the CT cystogram to confirm healing, and remove the catheter.

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How To: Retrograde Urethrogram

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I’ve gotten a number of recent requests to repost this easy, DIY guide to the retrograde urethrogram. Enjoy!

One of the hallmarks of urethral injury is blood and the meatus in males. The standard answer to the question “how do you evaluate for it?” is “retrograde urethrogram.” Unfortunately, too few people know how to perform this test, and not all radiologists are familiar. Many times it falls to the urologist, who may not be immediately available.

The technique is simple. This is my variation on the standard technique. The following items are needed:

  • A urine specimen cup
  • A tube of KY jelly (not the little unit dose packs)
  • A bottle of renografin or ultravist contrast
  • A 50-60 cc Toomey syringe (slip-tip)
  • A fluoroscopy suite

Pour 25cc of contrast and 25cc of KY jelly in the specimen cup, cap it and shake well. Draw the contrast jelly up into the syringe. Under fluoro, insert the tip of the syringe into the penis and pull the penis toward yourself, pinching the meatus around the tip of the syringe. Slowly inject all the contrast, watching the contrast column on the fluoro screen. Once there is easy flow into the bladder, you can stop the study. If you see extravasation into the soft tissues, stop the study and call Urology.

The advantages to using this technique are:

  • The contrast/jelly mix creates a contrast gel that is less likely to leak from the meatus when injected
  • The jelly makes it easy to insert the catheter if no urethral injury is detected

Normal urethrogram:

Normal urethrogram

Abnormal urethrogram:

Abnormal urethrogram

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Submental Intubation – The Video!

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Yesterday, I described a technique for providing a secure yet short-term airway tailored to patients who can’t have a tube in their mouth or nose. Patients undergoing multiple facial fracture repair are probably the best candidates for this procedure.

A picture may be worth a thousand words, but a video is even better. Please note that it is explicit and shows the blow by blow surgical procedure. Of note, it is a quick and relatively simple advanced airway technique.

YouTube player

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Help! My Consultant Won’t Come In To See A Patient!

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Consultants provide very important services to trauma patients in the ED and inpatient settings. The trauma professionals managing those patients can’t know everything (although we sometimes think we do). But occasionally our patients present issues that require evaluation by other experts in order to guarantee excellent care.

Sometimes our consultants want to do too much, or make recommendations that are not really in their area of expertise (e.g. a cardiologist evaluating a cardiac contusion). See the related post link below for tips on this situation.

But sometimes you know what the patient needs, but the consultant doesn’t agree or doesn’t do what you expect. Or they don’t want to come in when called. What to do?

Here are some tips:

The patient is in the ED and the consultant won’t come in to see the patient.

  • Are they right? Does that problem really need to be dealt with in the ED in the middle of the night? Many simple fractures and wounds do not need immediate attention. They can be dressed/splinted, the patient reassured, and instructed to see the consultant in the clinic the next day.
  • Is your knowledge of current management of the condition correct? Perhaps it has evolved, and it is now commonplace to temporize and deal with the problem as an outpatient during business hours. Make sure you are up on the current literature.

The patient is in the ED and the consultant won’t come in to see the patient, and you are sure that they should! Now what?

  • Call them personally (not a resident, midlevel provider, or any other intermediary) and clearly and concisely explain the situation, and your assessment of why the problem needs their immediate attention.
  • Listen to or elicit their rationale for not seeing the patient. If legitimate, this may help educate you and modify your future management of similar patients. If the rationale is not legitimate, inform them (tactfully) that this is at odds with your education/training/experience with other providers. Ask them to further explain, if they can.

If they still won’t come in despite what you think is a legitimate need, then you must calculate a quick risk:benefit ratio. Will any patient harm occur if the consultant does not see the patient? And what is the professional damage that you will incur if you move on to the next steps. If you believe that harm will occur, here are your options, from least to most damaging to your professional status at the hospital:

  • Contact another consultant in the same or overlapping specialty (if there is one). Apologize for the fact that you know they are not on call, and explain the situation.
  • Appeal to a higher authority. Contact the trauma medical director, service chief, or hospital administrator and see if they can intervene.
  • Explain to the consultant that you truly believe that harm will occur, and you will have to document that fact in the medical record as well as their failure to respond. In some cases, this will shake them loose, but they will certainly be pissed.
  • If all else fails, see if you can find a service that will help you by accepting the patient as an admission so they can be managed appropriately the next day. But then follow through by reporting the event to appropriate people including chief of staff, chief medical officer, VPMA, hospital quality department, and risk management. This is the nuclear option, so be prepared for the fallout.

Bottom line: This is not a fun situation to find yourself in. Good luck!

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