Overview

EC-IC Bypass, or Extracranial-Intracranial Bypass Surgery, is a neurosurgical procedure aimed at improving blood flow to the brain that creates a connection between an artery outside the skull (Extracranial) and one inside the skull (intracranial). Such type of surgical treatment provides an alternative route to the blood circulation to blood vessels of the brain which due to scarcity of oxygenated blood get congested or blocked. Such arrangement prevents problems of strokes and treats cerebral ischemia (lack of sufficient blood flow to the brain) as a treatment.

The EC-IC bypass is most commonly used for patients who suffer from conditions like atherosclerosis, Moyamoya disease, or brain aneurysms. It can also be an option in cases where the blood supply is at risk due to tumours compressing the arteries or other vascular abnormalities.

Symptoms & Causes

Symptoms

The primary indication for EC-IC bypass is compromised blood flow to the brain, which can manifest in symptoms such as:-

• Transient ischemic attacks (TIA) or ‘Mini-strokes’
• Recurrent strokes
• Weakness or numbness in one side of the body
• Difficulty speaking or understanding language
• Vision problems, including partial or complete loss of vision
• Confusion or cognitive difficulties

Causes

The causes of the blood flow restriction that necessitates an EC-IC bypass can vary, but common causes include:-

• Atherosclerosis – Hardening and narrowing of the arteries due to plaque buildup.
• Moyamoya disease – A rare condition characterized by the narrowing of arteries at the base of the brain, leading to insufficient blood supply.
• Cerebral aneurysms – Abnormal ballooning of a blood vessel that can press on nearby arteries, compromising blood flow.
• Tumors – They compress or interfere with blood vessels.

Diagnosis & Tests

Before deciding on EC-IC bypass surgery, doctors will conduct a thorough evaluation. This includes:-

• Magnetic Resonance Imaging (MRI) - To assess blood flow in the brain and detect any blockages or abnormalities.
• Cerebral Angiography - A special type of X-ray that provides a detailed view of the blood vessels in the brain.
• Computed Tomography (CT) Scan - To give a cross-sectional view of the brain and its blood supply.
• Transcranial Doppler Ultrasound - A non-invasive test to measure the velocity of blood flow in the brain’s major arteries.
• Perfusion Imaging - This test can help determine which parts of the brain are not receiving adequate blood flow.

Management & Treatment

The EC-IC bypass surgery is considered when less invasive treatments, such as medication and lifestyle changes, fail to improve blood flow to the brain. During the procedure, the surgeon will:-

• Identify a donor artery outside the skull.
• Create a small opening in the skull (craniotomy).
• Connect the donor artery to a recipient artery inside the skull.

The surgery aims to reroute blood flow and increase oxygen supply to the brain, preventing strokes or further brain damage. Recovery typically involves a hospital stay of several days, followed by rehabilitation to restore neurological function.

Prevention

While the need for EC-IC bypass cannot always be prevented, managing risk factors for stroke and arterial disease can reduce the likelihood of requiring such surgery. Prevention strategies include:-

• Controlling blood pressure and cholesterol levels.
• Managing diabetes and other chronic conditions.
• Quitting smoking.
• Maintaining a healthy diet and regular exercise.
• Monitoring and managing cardiovascular health with regular checkups.

Outlook / Prognosis

The prognosis after EC-IC bypass surgery is generally positive, especially in patients where blood flow was significantly restricted. Many patients experience a reduction in stroke risk and an improvement in cognitive and physical function. However, the success of the procedure depends on the patient’s overall health, the extent of arterial blockage, and how well the brain adapts to the new blood flow route.

Living With

Living with an EC-IC bypass involves regular follow-ups with your healthcare provider to monitor the success of the surgery and manage any ongoing risk factors. Most patients need to continue medications such as anticoagulants or antiplatelet agents to prevent further blood clots. In addition, patients may need to undergo rehabilitation for neurological deficits caused by previous strokes. Lifestyle modifications like maintaining a healthy weight, exercising regularly, and managing stress can also help ensure long-term success after surgery.

Why Tender Palm Super-Specialty Hospital for EC-IC Bypass (Extracranial-Intracranial Bypass Surgery)?

Tender Palm Hospital owned and operated by highly qualified medical professionals, is distinguished for attracting the most skilled neurosurgeons and vascular specialists in the country. Our team, comprised of the finest neurosurgeons specializing in cerebral vascular conditions, including cerebral ischemia and Moyamoya disease, makes Tender Palm Super-Specialty Hospital the top neurology and neurosurgery centre in Gomtinagar, Lucknow (U.P.), India. With state-of-the-art infrastructure and the latest advancements in surgical technology, Tender Palm provides exceptional care for complex neurological disorders.

To seek an expert consultation

Call us at +91-9076972161
Email at care@tenderpalm.com

Request a Call Back