Clarence Clemons, the saxophonist in Bruce Springsteen’s E Street Band, died on Saturday at a hospital in Palm Beach, Fla. from complications of a stroke he suffered last Sunday at his home in Singer Island, Fla. He was 69.
On average, every 40 seconds someone in the United States has a stroke.
A stroke is a sudden interruption in the blood supply of the brain. Most strokes are caused by an abrupt blockage of arteries leading to the brain (ischemic stroke). Other strokes are caused by bleeding into brain tissue when a blood vessel bursts (hemorrhagic stroke).
1. Ischemic Stroke– In everyday life, blood clotting is beneficial. When you are bleeding from a wound, blood clots work to slow and eventually stop the bleeding. In the case of stroke, however, blood clots are dangerous because they can block arteries and cut off blood flow, a process called ischemia. An ischemic stroke can occur in two ways: embolic and thrombotic strokes
a. Embolic Stroke In an embolic stroke, a blood clot forms somewhere in the body (usually the heart) and travels through the bloodstream to your brain. Once in your brain, the clot eventually travels to a blood vessel small enough to block its passage. The clot lodges there, blocking the blood vessel and causing a stroke. The medical word for this type of blood clot is embolus.
b. Thrombotic Stroke In the second type of blood-clot stroke, blood flow is impaired because of a blockage to one or more of the arteries supplying blood to the brain. The process leading to this blockage is known as thrombosis. Strokes caused in this way are called thrombotic strokes. That’s because the medical word for a clot that forms on a blood-vessel deposit is thrombus.
Blood-clot strokes can also happen as the result of unhealthy blood vessels clogged with a buildup of fatty deposits and cholesterol. Your body regards these buildups as multiple, tiny and repeated injuries to the blood vessel wall. So your body reacts to these injuries just as it would if you were bleeding from a wound;it responds by forming clots. Two types of thrombosis can cause stroke: large vessel thrombosis and small vessel disease (or lacunar infarction.)
Thrombotic stroke occurs most often in the large arteries, so large vessel thrombosis is the most common and best understood type of thrombotic stroke. Most large vessel thrombosis is caused by a combination of long-term atherosclerosis followed by rapid blood clot formation. Thrombotic stroke patients are also likely to have coronary artery disease, and heart attack is a frequent cause of death in patients who have suffered this type of brain attack.
Small vessel disease, or lacunar infarction, occurs when blood flow is blocked to a very small arterial vessel. The term’s origin is from the Latin word lacuna which means hole, and describes the small cavity remaining after the products of deep infarct have been removed by other cells in the body. Little is known about the causes of small vessel disease, but it is closely linked to hypertension (high blood pressure).
2. Hemorrhagic Stroke
Strokes caused by the breakage or “blowout” of a blood vessel in the brain are called hemorrhagic strokes. The medical word for this type of breakage is hemorrhage. Hemorrhages can be caused by a number of disorders which affect the blood vessels, including long-standing high blood pressure and cerebral aneurysms. An aneurysm is a weak or thin spot on a blood vessel wall. These weak spots are usually present at birth. Aneurisms develop over a number of years and usually don’t cause detectable problems until they break. There are two types of hemorrhagic stroke subarachnoid and intracerebral.
a. intracerbral hemmorrhage– bleeding occurs from vessels within the brain itself. Hypertension (high blood pressure) is the primary cause of this type of hemorrhage.
b. subarachnoid hemmorrhage(SAH)– an aneurism bursts in a large artery on or near the thin, delicate membrane surrounding the brain. Blood spills into the area around the brain which is filled with a protective fluid,causing the brain to be surrounded by blood-contaminated fluid.
Here are some Stroke Statistics:
1. Stroke is the third leading cause of death in the United States. Over 143,579 people die each year from stroke in the United States.
2. Stroke is the leading cause of serious, long-term disability in the United States.
Each year, about 795,000 people suffer a stroke. About 600,000 of these are first attacks, and 185,000 are recurrent attacks.
3. Nearly three-quarters of all strokes occur in people over the age of 65. The risk of having a stroke more than doubles each decade after the age of 55.
4. Stroke death rates are higher for African Americans than for whites, even at younger ages.
5. On average, every 40 seconds someone in the United States has a stroke.
6. Of all strokes, 87 percent are ischemic, 10 percent are intracerebral hemorrhage, 3 percent are subarachnoid hemorrhage.
7. The risk of ischemic stroke in current smokers is about double that of nonsmokers after adjustment for other risk factors.
8. Atrial fibrillation (AF) is an independent risk factor for stroke, increasing risk about five-fold.
9. High blood pressure is the most important risk factor for stroke.
Given these statistics, some doctors and nurses still miss the warning signs of strokes. Stroke Malpractice in Florida, a state with an aging population, is far too common.