Tag Archives: hematoma

Abdomen

How To: Manage Rectus Sheath Hematomas

Leave a comment

Although not strictly traumatic, rectus sheath hematomas frequently come to the attention of trauma professionals. In some cases, they may be due to vigorous physical activity or blunt impact. They may also occur spontaneously, especially in patients who are anticoagulated.

This is not a very common condition, accounting for only 1-2% of patients who present with acute abdominal pain.  The common etiology of rectus hematomas is either a tear of the major blood supply (superior and inferior epigastric arteries) or a tear of the muscle itself with bleeding from smaller vessels. The loose attachment of the inferior epigastric  and the fixed perforating  muscular branches make injury in the lower half of the muscle more common.

These hematomas are frequently self-limiting problems. The rectus sheath provides containment for the hematoma, and as pressure rises, bleeding slows and stops. However, if the hematoma is able to escape posteriorly, it can result in life-threatening bleeding.

Presentation generally consists of abrupt onset of focal abdominal pain, and an abdominal wall mass. The pain can be rather intense, making it difficult to determine if it is intraperitoneal or in the body wall. Tip: ask the patient to tense their abdominal wall muscles, then palpate the area. If the tenderness increases, then it is more likely due to an abdominal wall source. Tensing the muscles will shield sources inside the peritoneal cavity, decreasing tenderness to palpation.

Diagnosis may be made by physical exam, but not always. The hematoma may be seen using ultrasound, but the gold standard is the contrast-enhanced CT. Contrast is essential to determine if active extravasation is occurring.

Ultrasound

CT scan with contrast showing extravasation

Patients who are hemodynamically stable and do not have active extravasation may be treated conservatively. However, a significant number of patients will require at least one unit of blood. Be prepared and send a type and crossmatch. Conservative management includes ice packs for pain relief, direct pressure (sand bags), and reversal of anticoagulation if possible. Stable patients with extravasation on CT should be evaluated by angiography and embolized if a bleeding vessel can be identified.

Unstable patients must be resuscitated promptly with fluid and blood so they can be taken to the angiography suite. Operative exploration is extremely unsatisfying and should be avoided, since it is difficult to find the bleeding vessels in the midst of a huge hematoma. 

General

Pop Quiz – Final Answer

Leave a comment

Here’s some background info to go with the xray presented Wednesday:

  • Thin
  • Athlete
  • Epigastric trauma

Put these three together and you get a patient engaged in significant physical activity who was struck in the abdomen. If no pads are involved in the sport, the patient has little padding of their own.

This is a setup for pancreatic or duodenal trauma. This patient presented after being struck in the epigastrium by an elbow during a soccer game. It hurt, but wasn’t bad enough to stop playing. The following day, she was a little sore but felt bloated and started throwing up after breakfast.

In the ED, a CT was obtained. Here is a coronal view showing the distended stomach:

Axial views showed obstruction in the proximal 3rd portion of the duodenum, right over the spine:

An (unnecessary) contrast study was performed, which confirmed the pathology. Note the tapering and corkscrew appearance of the duodenal folds.

 

Final diagnosis: duodenal hematoma. This is a crushing injury from compression of the anterior abdominal wall against the spine. The third portion of the duodenum lies over the spine, as does the pancreas, so both are likely to be injured. The latter organ appeared normal on the CT.

Management of blunt duodenal hematoma is simple: wait on it. These will generally resolve quickly over the course of a few days. NG decompression is mandatory, since nothing will pass the obstructed area (saliva, gastic juice, and pancreatic effluent, which add up to 2L+ of fluid per day). In rare cases, parenteral nutrition may be needed if resolution time is approaching the one week mark or in smaller children. A surgical approach with drainage of the hematoma has a low but significant morbidity compared to just waiting. Athletes may return to play soon after recovery.