I74.2

Clinical Causes: Blood clots developing within the arteries (thrombosis), often due to artery damage or abnormal blood flow. Emboli, which are traveling particles like blood clots, fat globules, air bubbles, or other debris obstructing the arteries. Underlying conditions such as atherosclerosis (artery hardening), which narrows arteries and promotes clot formation. Injuries or trauma to the upper limbs that damage arterial walls. Certain medical conditions that increase blood clot risk, including atrial fibrillation, clotting disorders, or recent surgeries. Prolonged immobility or inactivity that promotes clot formation.

Key Symptoms: Sudden weakness or numbness in the arm or hand. Pain in the affected limb that may be severe and sudden. Coldness or pallor of the affected hand or fingers. Reduced or absent pulse in the arteries supplying the upper limb. Discoloration of the skin (pale or bluish appearance). Swelling or a feeling of heaviness in the limb. Loss of sensation or difficulty moving the fingers or hand. Tingling sensations or a burning feeling.

Diagnosis Path: Physical assessment to check for pulse quality, skin color, temperature, and limb sensitivity. Ultrasound Doppler studies to visualize blood flow in the arteries. Angiography, which uses contrast dye and imaging to locate blockages. Blood tests to identify clotting abnormalities or underlying conditions. Additional tests like MRI or CT scans may be used to assess tissue health and blood flow.

Treatment Protocols: Emergency anticoagulant medications to prevent clot growth or new clot formation. Thrombolytic therapy, where clot-dissolving drugs are administered in specific cases. Surgical procedures such as thrombectomy (removal of clots) or bypass surgery if necessary. Vascular interventions like angioplasty or stenting to open narrowed arteries. Management of underlying risk factors, including blood pressure and cholesterol control. Lifestyle modifications, such as smoking cessation, healthy diet, and regular exercise, to reduce future risk.