S35.23 Injury of inferior mesenteric artery

Name of the Condition

• Injury of inferior mesenteric artery

Summary

An injury of the inferior mesenteric artery involves damage to the vascular structure supplying the lower abdominal organs, typically resulting from trauma or other pathological processes. This condition requires prompt evaluation to assess vascular integrity and prevent complications such as hemorrhage or ischemia of the supplied organs.

Causes

Direct trauma to the abdomen, such as from motor vehicle accidents, falls, or penetrating injuries. Blunt force impact or crush injuries that disrupt the arterial wall. Iatrogenic causes, including surgical procedures or medical interventions in the abdominal region.

Risk Factors

• Participation in high-risk activities with potential for abdominal trauma.
• Occupations involving exposure to machinery or environments with crush hazards.
• Pre-existing vascular conditions that may predispose to injury.
• Advanced age, which can affect tissue elasticity and healing.

Symptoms

• Severe lower abdominal pain.
• Signs of internal bleeding, such as hypotension or tachycardia.
• Abdominal distension or rigidity.
• Altered skin temperature or sensation in the extremities.
• Possible pulsatile mass or hematoma in the lower abdomen.

Diagnosis

Physical examination to assess for signs of trauma or hemodynamic instability. Imaging studies, such as CT angiography, to evaluate vascular injury and associated organ damage. Laboratory tests to assess for blood loss or organ dysfunction.

Treatment Options

Surgical repair or reconstruction of the injured artery to restore blood flow. Endovascular techniques, such as stenting or embolization, may be used in select cases. Supportive care, including fluid resuscitation and management of associated injuries.

Prognosis and Follow-Up

Prognosis depends on the extent of injury, promptness of treatment, and presence of complications. Regular follow-up to monitor for recurrent bleeding, ischemia, or long-term vascular complications. Imaging may be repeated to assess healing or residual issues.

Complications

Hemorrhage leading to hypovolemic shock. Ischemia or infarction of supplied organs, potentially requiring resection. Infection or sepsis from associated injuries. Vascular complications, such as aneurysm or stenosis, may develop later.

Lifestyle & Prevention

Avoid high-risk activities that increase abdominal trauma risk. Use protective equipment in hazardous occupations. Maintain overall vascular health through regular exercise and a balanced diet. Prompt medical evaluation for abdominal trauma.

When to Seek Professional Help

Seek immediate care for severe abdominal pain, signs of internal bleeding (e.g., dizziness, fainting), or trauma to the abdomen. Persistent or worsening symptoms after injury also warrant urgent evaluation.

Tips for Medical Coders

Document the mechanism of injury (e.g., blunt vs. penetrating) and any associated abdominal trauma. Specify if the injury is open or closed. Include details on diagnostic imaging or surgical intervention to support code assignment. Ensure documentation aligns with clinical findings to justify the specificity of S35.23.