I63.11

Clinical Causes: Formation of blood clots that travel from other parts of the body, like the heart or large arteries Atherosclerosis (hardening or narrowing of arteries) in the vertebral artery Heart conditions such as atrial fibrillation, which can lead to clot formation Vasculitis (inflammation of blood vessel walls) Dissections or tears in the vertebral artery Carotid or vertebral artery disease due to plaque buildup

Key Symptoms: Sudden weakness or numbness in the face, arm, or leg, usually on one side of the body Difficulty speaking or understanding speech (aphasia) Sudden loss of balance or coordination, often resulting in dizziness or vertigo Visual disturbances such as double vision or loss of vision in one eye Severe headache that develops quickly Difficulty swallowing or difficulty with coordination of muscles involved in speech Altered consciousness or loss of responsiveness in severe cases

Diagnosis Path: Medical History and Physical Examination: Assessing neurological function and identifying risk factors Imaging Tests: MRI or CT scans are crucial for visualizing brain tissue damage and blocks in blood vessels Vascular Imaging: Techniques such as MRA (Magnetic Resonance Angiography), CTA (Computed Tomography Angiography), or Doppler Ultrasound to examine blood flow and pinpoint occlusion in the vertebral artery Cardiac Evaluation: Echocardiogram and ECG to detect heart-related sources of emboli Blood Tests: To identify clotting disorders, infections, or other underlying conditions

Treatment Protocols: Thrombolytic Therapy: Administration of clot-busting medications (such as tissue plasminogen activator, tPA) if within the optimal treatment window Anticoagulants and Antiplatelet Agents: To prevent new clots from forming, including medications like warfarin or aspirin Mechanical Thrombectomy: Surgical removal of the embolus using specialized endovascular techniques in selected cases Supportive Care: Managing blood pressure, blood sugar levels, and providing respiratory support if needed Rehabilitation: Physical, occupational, and speech therapy to recover lost functions and adapt to disabilities Addressing Underlying Causes: Procedures or medications to treat conditions like carotid artery disease or atrial fibrillation Lifestyle Modifications: Dietary changes, smoking cessation, and exercise to reduce stroke risk