Park Community Credit Union - Don’t Blame the Brain

Since a stroke occurs in the brain, it might seem like that’s where the problem started. But that is not usually the case. The Society for Vascular Surgery is out to set us straight.

According to the Society, most ischemic strokes are caused by a complication of atherosclerosis, the official name for hardening of the arteries. That’s a common health issue that can range from minor, to troublesome, to deadly.

Patients who have high LDL (bad) cholesterol may have hard plaque building up inside their artery walls. Plaque buildup makes arteries narrower and less flexible.

“When plaque builds up in your carotid artery (the main artery that provides oxygen to the brain), it can cause the artery to narrow – that’s called carotid stenosis,” said vascular surgeon Dr. Mohammad Eslami of the University of Pittsburgh Medical Center.

“Small clots can form on the plaque, then break off and travel to the brain. If a clot blocks a vessel in the brain it can cause a minor or major stroke depending on the diameter of the blocked artery”, Eslami said.

Carotid stenosis is responsible for up to one-third of all strokes, he added, and stroke causes one in every 15 deaths. About 700,000 strokes occur every year, usually in men.

A Bad Surprise

An ischemic stroke is frequently a surprise event because even people who have severe narrowing of an internal carotid usually have had no symptoms.

In many cases the condition is found during a routine physical or after a patient has already had a stroke. Sometimes the physician can detect a telltale sound in the artery before any strokes have occurred.

Listen for the Bruit

The narrowing of artery sometimes creates an audible noises that can be picked up when your doctor listens to your neck; this audible noise is called a bruit.

If your doctor thinks you might have carotid artery disease, or if you have had a stroke, you will be given a painless ultrasound test to determine the extent of the narrowing, also called stenosis.

Patients who should be considered for an ultrasound screening are those over age 65 with atherosclerotic risk factors, such as high cholesterol, hypertension, diabetes, a history of heart attack or a smoking habit.

Based on the ultrasound test, patients will next see a vascular surgeon.

Vascular surgeons perform surgery or endovascular intervention only when necessary and many patients who have mild or even moderate carotid disease with no symptoms only need medication and regular monitoring by the surgeon.

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