Vascular Injury

Overview

Severe bleeding or a limb that suddenly becomes cold, pale, or numb is a medical emergency. Call emergency services right away.

A vascular injury is damage to a blood vessel, either an artery that carries blood away from the heart or a vein that returns it. Vessels can be cut, torn, crushed, stretched, or blocked. The two main dangers are heavy bleeding when blood escapes a damaged vessel, and loss of blood flow when an injury blocks circulation to tissue beyond it.

Vascular injuries range from minor bruising to limb- and life-threatening trauma. Prompt recognition and treatment are essential to control bleeding and restore blood flow before tissue is damaged.

Symptoms

Signs of a vascular injury depend on whether bleeding or loss of blood flow is the main problem:

• Heavy or pulsing bleeding from a wound
• A rapidly expanding bruise or swelling, sometimes pulsating
• A limb that is cold, pale, or bluish beyond the injury
• Weak or absent pulse in the affected limb
• Numbness, tingling, or weakness past the injury
• Severe pain out of proportion to the visible wound

Causes

Vascular injuries are usually caused by trauma:

• Penetrating injury: Cuts, stab wounds, gunshot wounds, or sharp objects.
• Blunt trauma: Falls, vehicle collisions, or direct blows that crush or stretch vessels.
• Fractures and dislocations: Broken bones or joints out of place can tear nearby vessels.
• Crush injuries and severe compression of a limb.
• Medical procedures involving the blood vessels, in some cases.

Risk Factors

• High-energy trauma such as vehicle crashes and falls from height
• Penetrating wounds
• Fractures and joint dislocations near major vessels
• Use of blood thinners, which can worsen bleeding
• Certain medical and surgical procedures

Diagnosis

Doctors assess vascular injuries by examining pulses, skin color, temperature, and sensation beyond the injury. Tests may include:

• Blood pressure comparison between limbs.
• Ultrasound (Doppler) to check blood flow.
• CT angiography or angiography to map vessels and find the site of injury.

In a severe emergency, treatment to control bleeding and restore circulation may begin before all tests are completed.

Treatment

Treatment focuses on stopping bleeding, restoring blood flow, and saving tissue:

• Immediate bleeding control: Firm direct pressure on a bleeding wound, and a tourniquet for severe limb bleeding if trained.
• Stabilization: Fluids or blood, and treatment for shock.
• Surgery: Repairing, reconnecting, or grafting the vessel, or controlling bleeding.
• Minimally invasive procedures: Using catheters to seal or reopen vessels in selected cases.
• Follow-up care: Monitoring circulation and treating any nerve or muscle damage.

Prevention

• Use seat belts and follow safety practices to reduce serious trauma
• Wear protective equipment for high-risk work and sports
• Handle sharp tools and weapons safely
• Seek prompt care for fractures and dislocations to limit vessel damage

When to See a Doctor

Call emergency services and seek immediate care for heavy or pulsing bleeding, a rapidly swelling bruise, or a limb that becomes cold, pale, numb, or has a weak or absent pulse after an injury. While waiting for help, apply firm direct pressure to bleeding wounds. Any significant trauma near major blood vessels should be evaluated promptly even if it looks minor.

Related Topics

Frequently Asked Questions

References

1. MedlinePlus, U.S. National Library of Medicine. Bleeding.
2. American College of Surgeons. Stop the Bleed.
3. StatPearls, National Library of Medicine. Vascular Trauma.