In my last post, I reviewed the updated AAST organ injury scaling (OIS) for the spleen. Today, I’ll share details of the new version of liver grading.
First, the overall focus of the updated liver scale is similar to the spleen one: it incorporates a listing of criteria identified by CT scan that parallels the old anatomic criteria. The CT column contains all the old anatomic stuff, but now includes scaling for active bleeding.
The confusing part? Whereas contained active bleeding within the spleen was Grade IV and active bleeding escaping the spleen was Grade V in the updated scale, these drop down a grade in the liver. So bleeding contained with the liver parenchyma is Grade III and active extravasation escaping into the peritoneal cavity is only Grade IV. I presume this has to do with the abbreviated injury score (AIS) used to calculate ISS, and that the mortality hit from this degree of bleeding is less than that of the spleen.
The final difference between the updated scale and the original is the removal of Grade VI. This was previously described as hepatic avulsion, which is a nonsurvivable injury. The AIS for Grade VI liver used to be 6, which causes an immediate ISS calculation short circuit to 75. Which also means that survival is approximately 0%. This is not part of the OIS update, which may be due to the fact that it never occurs in anyone who makes it to a trauma center alive.
Here are the updated guidelines. Click the image or link below it to open a bigger image in a new window.
Click to download larger image
In the next post, I’ll review the new features of the kidney injury scale.
Over the years, the American Association for the Surgery of Trauma (AAST) has developed and maintained a library of organ injury scales. Organ injury scaling allows us to compare apples to apples in research studies, and in many cases enables us to tailor interventions and predict outcomes. Many of the scales have been in place for decades and have not been updated. The spleen, liver, and kidney scales were introduced 25 year ago, and received their first update last December. During the next three posts, I’ll review what’s new and different with them.
The biggest change to all three scales has been the incorporation of specific vascular injuries seen on modern-day CT scans. It is recommended that scanning for solid organ injury be conducted using dual phase (arterial and portal venous) scanning techniques. This increases study sensitivity and provides the best images for accurate diagnosis and scaling. Also note that specific criteria are now provided for CT, intraoperative, and pathologic diagnosis.
Let’s start with the spleen today. Here are the updated guidelines. Click the image or link to get a bigger image in a new window.
Click to download larger image
The main change to this scale is the addition of active bleeding contained within the spleen (pseudo-aneurysm or contained extravasation) to Grade IV, and uncontained extravasation to Grade V.
In my next post, I’ll discuss the new features of the liver injury scale.
This issue continues to rear its ugly head, so I continue to repost from time to time.
This tip is for all trauma professionals: prehospital, doctors, nurses, etc. Anyone who touches a trauma patient. You’ve probably seen this phenomenon in action. A patient sustains a very disfiguring injury. It could be a mangled extremity, a shotgun blast to the torso, or some really severe facial trauma. People cluster around the injured part and say “Dang! That looks really bad!”
It’s just human nature. We are drawn to extremes, and that goes for trauma care as well. And it doesn’t matter what your level of training or expertise, we are all susceptible to it. The problem is that we get so engrossed (!) in the disfiguring injury that we ignore the fact that the patient is turning blue. Or bleeding to death from a small puncture wound somewhere else. We forget to focus on the other life threatening things that may be going on.
How do we avoid this common pitfall? It takes a little forethought and mental preparation. Here’s what to do:
- If you know in advance that one of these injuries is present, prepare your crew or team. Tell them what to expect so they can guard against this phenomenon.
- Quickly assess to see if it is life threatening. If it bleeds or sucks, it needs immediate attention. Take care of it immediately.
- If it’s not life threatening, cover it up and focus on the usual priorities (a la ATLS, for example).
- When it’s time to address the injury in the usual order of things, uncover, assess and treat.
Don’t get caught off guard! Just being aware of this common pitfall can save you and your patient!
This post is a favorite, and I’m publishing it again since I just finished my “When To Call” series.
Trauma surgeons often rely on consultants to assist in the care of their patients. Orthopedic surgeons and neurosurgeons are some of the more frequent consultants, but a variety of other surgical and medical specialists may be needed. I have found that providing a set of guidelines to consultants helps to ensure quality care and provide good communication between caregivers and patients / families.
We have disseminated a set of guidelines to our colleagues, and I wanted to touch on some of the main points. You can download the full document using the link at the bottom of this post.
In order to deliver the highest quality and most cost-effective care, we request that services we consult do the following:
- Please introduce yourself to our patient and their family, and explain why you are seeing them.
- Although you may discuss your findings with the patient, please discuss all recommendations with a member of the trauma service first. This avoids patient confusion if the trauma team chooses not to implement any recommendations due to other patient factors you may not be aware of.
- Document your consultation results in writing (paper or EMR) in a timely manner.
- If additional tests, imaging or medications are recommended, discuss with the trauma service first. We will write the orders or clear you to do so if appropriate, and will discuss the plan with the patient.
- We round at specific times every day and welcome your attendance and input.
- Please communicate any post-discharge instructions to us or enter in the medical record so we can expedite the discharge process and ensure all followup visits are scheduled.
Bottom line: A uniform “code of behavior” is important! Ensuring good patient communication is paramount. They need to hear the same plans from all of their caregivers or else they will lose faith in us. One of the most important lessons I have learned over the years is that you do not need to implement every recommendation that a consultant makes. They may not be aware of the most current trauma literature, and they will not be familiar with how their recommendations may impact other injuries.
Click here to download the full copy of the Regions Hospital Trauma Services consultant guidelines.
And here’s the last in my short “When To Call” series. This one’s a little different, and quite a bit longer. That’s due to the complexity and sheer number of potential orthopedic problems.
When consulting a specialty service, always keep the patient paramount in your decision making. Then think about how soon and under what context they really need to see the patient. Can it wait until morning? Do they even really need to be seen in the ED, or can this be an outpatient visit?
Tomorrow: Expectations on how your consultants should go about their business when seeing your patients.