Ischemic Stroke is a condition where the blood vessels supplying the brain become narrowed, leading to insufficient blood flow to certain parts of the brain. This results in brain cell damage and tissue death, making it the most common cause of stroke, accounting for about 87% of stroke patients.

Causes of Ischemic Stroke

The primary cause of ischemic stroke is the narrowing of the arteries supplying the brain due to the buildup of cholesterol, fats, and other substances in the blood vessel walls, known as "plaques." This narrowing can lead to blockages, reducing blood flow to the brain. Other risk factors may include:

  • Abnormal heart rhythms, such as atrial fibrillation
  • Chronic high blood pressure
  • Diabetes
  • Smoking
  • Regular alcohol consumption
  • Obesity
  • Genetic factors

Symptoms of Ischemic Stroke

The symptoms of ischemic stroke depend on the location and size of the affected area, which can occur suddenly and change rapidly. Common symptoms include:

  • Weakness or numbness in the arm, leg, or one side of the face
  • Difficulty speaking, slurred speech, or trouble swallowing
  • Dizziness, blurred vision, or vision loss
  • Decreased consciousness or confusion
  • Sudden severe headache
  • Loss of balance or weakness in the legs
  • Numbness or tingling in the face, arms, or legs

If you experience any of these symptoms, seek medical attention immediately, as timely treatment can reduce the severity of symptoms and prevent potential complications.

Diagnosis of Ischemic Stroke

Doctors will take a medical history, perform a physical examination, and may use laboratory tests for diagnosis, including:

Blood pressure measurement and blood tests to assess risk factors such as blood sugar and cholesterol levels.

  • Electrocardiogram (EKG) to check for abnormal heart rhythms
  • CT scan or MRI of the brain to confirm narrowing or blockage of brain blood vessels and assess the severity of the condition
  • Carotid ultrasound to evaluate narrowing of the blood vessels supplying the brain

Treatment for Ischemic Stroke

Treatment for ischemic stroke varies depending on the severity of the condition and the time elapsed since onset, including:

  • Thrombolytic drugs, such as alteplase or tissue plasminogen activator (t-PA), which help dissolve blood clots but must be administered within 4.5 hours of symptom onset
  • Mechanical thrombectomy, a procedure using special tools to remove blood clots when thrombolytic drugs are ineffective
  • Surgery to open narrowed or blocked blood vessels (carotid endarterectomy)
  • Preventive treatments to avoid blood clots, such as anticoagulants, cholesterol-lowering medications, and antihypertensives
  • Rehabilitation, including physical therapy, occupational therapy, and speech and swallowing training to help patients return to normal life as much as possible

Timely prevention and treatment are crucial in reducing the severity of ischemic stroke and preventing potential complications, allowing patients to return to a more normal life.