All posts by TheTraumaPro

Traveling In France!

I’ll be travelling through France for the next two weeks, stopping by a few hospitals to visit, I hope. France is in my top 10 list of international readers. And interestingly, most of my French readers are not in Paris! 

Most of my posts will be “Best Of” while I am away. Additionally, there will not be a Trauma MedEd newsletter this month. But I’ll make it up to you in June!

Follow my progress on FourSquare and Twitter! I hope to meet some of my international readers out there! Tweet me if I’m in your neighborhood.

Michael

Prevention: Handlebar Injury

“Necessity is the mother of invention”

                                   -Unknown

I’ve managed several cases of injury due to bicycle handlebars over the years. Typically, a smaller child crashes his or her bike, and the handlebar hits them in the epigastrium. Children have thinner abdominal walls and less developed muscular to protect them, so this very focal impact can do a lot of damage. 

There is now a clever and inexpensive solution available that can decrease the number of injuries we see from this common mechanism. It’s called the Handlebar Helmet, and was developed by the parents of a 4 year old boy who suffered this injury. It is essentially a special plastic cap that fits on the end of the handlebars. It’s designed to diffuse the pressure of any impact with the handlebar. This product actually does double duty, protecting during a crash, and also preventing injury if a child trips and falls on a bike that is lying down.

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The product is very easy to install, and comes in multiple colors so it can be “cool” (very important to kids). This is a nice, simple idea that can prevent potentially devastating injuries.

Over the next two days, I’m going to rerun an interesting pediatric case of handlebar injury.

Reference: The Handlebar Helmet. www.handlebarhelmet.com

Note: I have no financial interest in this product.

Where Do Pulmonary Emboli Really Come From?

For a long time, we “knew” that pulmonary emboli were a possible and dreaded complication of deep venous thrombosis (DVT). However, we are beginning to discover that this is not always the case. The group in San Diego decided to see if there really are two different types of PE in trauma, and what that means.

Scripps Mercy Hospital, a level I trauma center, looked at 5 ½ years of their experience with adult trauma patients who were routinely screened for DVT. Any of these patients who developed a PE within 6 weeks of admission were evaluated further.

Here are the factoids:

  • Duplex screening from groin to ankle was carried out twice weekly in ICU patients, and once weekly in ward patients
  • Surveillance was carried out if the patient would be non-ambulatory for more than 72 hours, or were at moderate or higher risk for DVT using the ACCP guidelines
  • Nearly 12,000 patients were evaluated by the trauma service and 2,881 underwent surveillance
  • 31 patients (1%) developed a PE
  • 12 of these 31 had DVT identified before or immediately after their PE. Clot was below-knee in 9 (!), above-knee in 2, and in the IJ in one.
  • 19 patients had PE but no DVT identified (de novo PE, DNPE)
  • DNPE tended to be single and peripherally located, and associated with rib fractures, pulmonary contusions, blood transfusions, and pneumonia
  • DVT + PE were more often found in multiple lobes or bilaterally

Bottom line: Like most, this is not a perfect study, but it’s a really good one. It is looking more and more likely that some PEs arise de novo, without any associated DVT. These clots are more likely to be linked to some type of inflammatory process, and have a tendency toward causing more of the classic signs and symptoms of PE. There are still lots of questions to be answered, like do you need to anticoagulate the de novo PEs? But for now, no change in practice. Just be aware that these might not be as bad as they seem.

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Reference: Pulmonary embolism without deep venous thrombosis: de novo or missed deep venous thrombosis? J Trauma 76(5):1270-1281, 2014.

When Is It Too Late To Call A Trauma Activation?

Admit it. It’s happened to you. You get paged to a trauma activation, hustle on down to the ED, and get dressed. The patient is calmly and comfortably lying on a cart, staring at you like you’re from Mars. Then you hear the story. He has a grade V spleen injury. But he just got back from CT scan. And his car crash was yesterday

Is this appropriate? The answer is no! But, as you will see, the answer is not always as obvious as this example. The top thing to keep in mind in triggering a trauma activation appropriately is the reason behind having them in the first place.

The entire purpose of a trauma activation is speed. The assumption must be that your patient is dying and you have to (quickly) prove that they are not. It’s the null hypothesis of trauma.

Trauma teams are designed with certain common features:

  • A group of people with a common purpose
  • The ability to speed through the exam and bedside procedures via division of labor
  • Rapid access to diagnostic studies, like CT scan
  • Availability of blood products, if needed
  • Immediate access to an OR, if needed
  • Recognition in key departments throughout the hospital that a patient may need resources quickly

Every trauma center has trauma activation triage criteria that try to predict which patients will need this kind of speed. Does the patient in the example above need this? NO! He’s already been selected out to do well. Why, he’s practically finished the nonoperative solid organ management protocol on his own at home.

Here are some general rules:

  • If the patient meets any of your physiologic and/or anatomic criteria, they are or can be sick. Trigger immediately, regardless of how much time has passed.
  • If they meet only mechanism criteria and it’s been more than 6 hours since the event, they probably do not need the fast track.
  • If they only meet the “clinician / EMS judgment” criteria, think about what the suspected injuries are based on a quick history and brief exam. Once again, if more than 6 hours have passed and there are no physiologic disturbances, the time for needing a trauma activation is probably past.

If you do decide not to trigger an activation in one of these cases, please let your trauma administrative team (trauma medical director, trauma program manager) know as soon as possible. This may appear to be undertriage as they analyze the admission, and it’s important for them to know the reasoning behind your choice so they can accurately document under- and over-triage.

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