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Disease Insights: ischemia





Welcome to the ultimate guide on ischemia. Here, you'll find answers to the most common questions to help you or your loved ones understand and manage this condition better.


Description for ischemia

A condition where there is an inadequate blood supply to an organ or part of the body, especially the heart muscles.

Symptoms of ischemia

chest pain, cold sweats, dizziness, fatigue, shortness of breath

Precautions for ischemia

Take prescribed medications for bloo, Manage underlying conditions, Avoid smoking, Exercise regularly

Questions Covered:


  • what is ischemia?
  • What are the usual symptoms of ischemia?
  • causes of ischemia?
  • What are the potential risk factors associated with ischemia?
  • How do doctors usually figure out if someone has ischemia, diagnosis?
  • What are the possible complications that could arise from ischemia?

Answers:



Question: what is ischemia?

Ischemic stroke is one of three types of stroke. It is caused by a blockage in an artery that supplies blood to the brain. If circulation isn't restored quickly, brain damage can be permanent.
Ischemic stroke is also called brain ischemia and cerebral ischemia. The blockage caused by this stroke reduces the blood flow and oxygen to the brain, leading to damage or death of brain cells. Approximately 87 percent of all strokes are ischemic strokes.
Another type of major stroke is hemorrhagic stroke, in which a blood vessel in the brain ruptures and causes bleeding. The bleeding compresses brain tissue, damaging or killing it.
The third type of stroke is transient ischemic attack (TIA), also known as a ministroke. This type of stroke is caused by a temporary blockage or decreased blood flow to the brain. Symptoms usually disappear on their own.


Question: What are the usual symptoms of ischemia?

Specific symptoms of an ischemic stroke depend on what region of the brain is affected. Certain symptoms are common across most ischemic stroke, including:
vision problems, such as blindness in one eye or double vision
weakness or paralysis in your limbs, which may be on one or both sides, depending on the affected artery
dizziness and vertigo
confusion
loss of coordination
drooping of face on one side
Once symptoms start, it's crucial to get treatment as quickly as possible. This makes it less likely that damage becomes permanent. If you think someone is having a stroke, evaluate them using FAST:
Face. Is one side of their face drooping and hard to move?
Arms. If they raise their arms, does one arm drift downward, or do they have significant difficulty raising their arm?
Speech. Is their speech slurred or otherwise strange?
Time. If the answer to any of these questions is yes, it's time to call your local emergency services.
Even though TIA lasts for a brief period and usually resolves on its own, it also requires a doctor. This can be a warning sign of a full-blown ischemic stroke.


Question: causes of ischemia?

Ischemic stroke occurs when an artery that supplies blood to the brain is blocked by a blood clot or fatty buildup, called plaque. This blockage can appear at the neck or in the skull.
Clots usually start in the heart and travel through the circulatory system. A clot can break up on its own or become lodged in an artery. When it blocks a brain artery, the brain doesn't get enough blood or oxygen, and cells start to die.
Ischemic stroke caused by a fatty buildup happens when plaque breaks off from an artery and travels to the brain. Plaque can also build up in the arteries that supply blood to the brain and narrow those arteries enough to cause ischemic stroke.
Global ischemia, which is a more severe type of ischemic stroke, happens when the flow of oxygen to the brain is greatly reduced or completely stopped. This is usually caused by a heart attack, but it can also be caused by other conditions or events, such as carbon monoxide poisoning.


Question: What are the potential risk factors associated with ischemia?

Circulatory conditions are the main risk factor for ischemic stroke. That's because they increase your risk for clots or fatty deposits. These conditions include:
high blood pressure
atherosclerosis
high cholesterol
atrial fibrillation
prior heart attack
sickle cell anemia
clotting disorders
congenital heart defects
Other risk factors include:
diabetes
smoking
being overweight, especially if you have a lot of abdominal fat
heavy alcohol misuse
use of certain drugs, such as cocaine or methamphetamines
Ischemic stroke is also more common in people who have a family history of stroke or who've had past strokes. Men are more likely than women to have ischemic stroke, while blacks have a higher risk than other races or ethnic groups. Risk also increases with age.


Question: How do doctors usually figure out if someone has ischemia, diagnosis?

A doctor can usually use a physical exam and family history to diagnose ischemic stroke. Based on your symptoms, they can also get an idea of where the blockage is located.
If you have symptoms such as confusion and slurred speech, your doctor might perform a blood sugar test. That's because confusion and slurred speech are also symptoms of severe low blood sugar. Learn more about the effects of low blood sugar on the body.
A cranial CT scan can also help distinguish ischemic stroke from other issues that cause brain tissue death, such as a hemorrhage or a brain tumor.
Once your doctor has diagnosed ischemic stroke, they'll try to figure out when it started and what the root cause is. An MRI is the best way determine when the ischemic stroke started. Tests used to determine a root cause might include:
an electrocardiogram (ECG or EKG) to test for abnormal heart rhythms
echocardiography to check your heart for clots or abnormalities
an angiography to see which arteries are blocked and how severe the blockage is
blood tests for cholesterol and clotting problems


Question: What are the possible complications that could arise from ischemia?

If ischemic stroke isn't treated promptly, it can lead to brain damage or death.



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Conclusion & Takeaways


Learning about ischemia is the first step toward taking control of your health. By understanding its causes, symptoms, and treatments, you empower yourself to make informed decisions. Remember to consult healthcare professionals for personalized advice and support.