S55.011

Clinical Causes: Trauma from sharp objects such as knives or glass cuts Accidental injury during contact sports or physical activities Falls or accidents that result in direct impact to the forearm Surgical procedures that inadvertently damage the artery Motor vehicle accidents causing forearm injuries

Key Symptoms: Sudden, intense bleeding from the wound Swelling and bruising around the injury site Pain, throbbing or aching in the forearm Weakness or numbness in the hand or fingers Discoloration or pallor of the affected hand Reduced blood flow signs such as coolness or pale skin in the hand Possible formation of a hematoma (a collection of blood under the skin)

Diagnosis Path: Diagnosing a laceration of the ulnar artery typically involves a physical examination by a healthcare professional, who will assess bleeding, pulses, and nerve function in the arm and hand. Imaging studies such as Doppler ultrasound or angiography may be used to visualize blood flow and confirm the injury. In some cases, additional tests may be performed to evaluate the extent of tissue damage or assess for complications like blood clot formation.

Treatment Protocols: Treating a laceration of the ulnar artery generally requires prompt medical intervention. Treatment options may include: - **Hemostasis**: Applying direct pressure to stop bleeding immediately. - **Surgical repair**: Surgically suturing the torn artery, removing damaged tissue, or performing vascular repair procedures. - **Vascular grafting**: In cases of extensive damage, grafts may be used to restore blood flow. - **Monitoring for complications**: Close observation for signs of ongoing bleeding, infection, or tissue ischemia. - **Supporting care**: Pain management, elevation of the limb, and sometimes antibiotics to prevent infection. It is essential to seek emergency medical attention if such an injury occurs, to prevent significant blood loss or tissue damage.