Is there reduced blood flow to parts of your body? Let's learn about Ischemia!

Have you ever heard of a condition where blood doesn't flow properly to certain parts of the body? When that happens, those parts don't get enough oxygen, which can cause serious problems. This can be really serious. Today we're going to talk about this condition called ischemia. Let's take a look at what exactly it is, why it happens, and what you can do about it.

What exactly is Ischemia?

Simply put, Ischemia is when a part of your body doesn't get enough blood. Now you know that our blood carries oxygen to every cell and tissue in the body. So when blood flow decreases, that means the amount of oxygen that is delivered also decreases. This is the real problem, because our cells need oxygen to live.

Most often, this happens due to a narrowed artery or a blockage in a blood vessel.

Sometimes this ischemia condition may not be very severe and may not cause any major problems. However, over time, it can gradually worsen and become more severe. If it becomes very severe, meaning that a lot of cells die, it can be life-threatening. Therefore, it is very important to be aware of this.

What are the main types of ischemia?

Ischemia can affect different parts of the body. We classify it according to the area affected. There are several main types that can be seen:

• Myocardial ischemia: This is a condition that occurs when the blood supply to the heart muscle is reduced. This is the main cause of the heart attack that we have all heard of. Think about it, the heart is like a pump that works non-stop. What if it doesn't get enough blood?
• Mesenteric ischemia: This condition can occur when the blood vessels that supply blood to parts of the digestive system, such as our intestines, become blocked. This is somewhat rare, but it can be severe and sudden.
• Peripheral or limb ischemia: This is when there is a decrease in blood flow to the arms or legs. Sometimes the legs hurt when you walk, but it only gets better after you stand for a while. In severe cases, the arm or leg can even become paralyzed.
• Ischemic stroke: This is a stroke that affects the brain and occurs when a blood vessel that supplies blood to the brain is blocked, causing damage to part of the brain, which is deprived of oxygen. This is very dangerous because once brain cells die, they cannot regenerate.
• Transient ischemic attack (TIA): This is also a temporary decrease in blood flow to the brain. Although the symptoms are similar to those of a stroke, they usually go away within 24 hours, often within a few minutes. However, it is a warning sign that a major stroke is coming! Therefore, if you have a TIA, you should seek medical attention immediately.

How common is this condition called ischemia?

In fact, this ischemia is much more common than you might think. Just think, heart disease is the leading cause of death in the world. And when it comes to strokes, most of them are ischemic strokes. For example, in a country like America, it is said that someone has a stroke every 40 seconds.

More than 200 million people worldwide suffer from peripheral artery disease (PAD). About 11% of these people have chronic limb-threatening ischemia.

However, the aforementioned mesenteric ischemia is a bit rare. It is mostly seen in very critically ill patients in the Intensive Care Unit (ICU).

What are the symptoms of Ischemia?

The symptoms of ischemia vary depending on where in the body the blood supply is lacking. That is, it is not the symptoms that occur when the heart is lacking blood supply, but the symptoms that occur when the legs are lacking blood supply. Let's look at some of the common symptoms:

• Angina, which is chest pain or tightness: This is a major symptom of myocardial ischemia. It can feel like a pressure or a weight is being placed on your chest. Sometimes, this pain can radiate to your left arm, neck, or jaw.
• Shortness of breath: You may experience shortness of breath, even when you are slightly tired.
• Lightheadedness or dizziness: A feeling of dizziness, lightheadedness, or fainting.
• Difficulty speaking: Slurring words, not being able to speak clearly, and not being understood by others. This is especially a symptom of brain ischemia.
• Loss of coordination: Stumbling while walking, sudden loss of balance, difficulty holding things.
• Pain in an arm or leg: The pain may come on suddenly, or it may come on when you do something (e.g., pain in your leg when walking). This pain may subside after a short period of rest, but may return when you resume activity.
• A hand or leg becomes pale or cold: That hand/leg feels colder than the other side, and the color changes, possibly even turning blue.
• Numbness or tingling in an arm or leg (Paresthesia): It feels like pins and needles, or the area is numb or heavy.
• Severe abdominal (belly) pain: Sudden, unbearable abdominal pain. This may be a sign of mesenteric ischemia.
• Severe bloating: A feeling of severe bloating, as if the stomach is full of gas.
• Diarrhea: Diarrhea may sometimes be accompanied by blood.
• An upset stomach, nausea, and vomiting.

If you have one or more of these symptoms, don't ignore them. It's best to seek medical advice immediately. Especially if you have symptoms like chest pain or difficulty speaking, you should go to the hospital immediately.

What are the causes of ischemia?

Ischemia occurs when something blocks the flow of blood through a blood vessel to the tissues. Sometimes, if there is low blood pressure or low oxygen levels throughout the body for a long time, a condition called "global ischemia" can occur.

The main causes of ischemia are:

• Atherosclerosis: This is the main cause. Simply put, fat deposits (we call it cholesterol) build up inside the blood vessels, thickening the walls of the vessels and narrowing the openings. This prevents blood from flowing properly.
• Blood clots: A blood clot can form inside a blood vessel and block the vein. This blood clot can also form elsewhere, travel with the blood, and become lodged in a vein.
• Strangulation of an abdominal hernia: Sometimes a portion of the intestine can become strangulated inside a hernia, cutting off blood flow to it.
• Very low blood pressure: When blood pressure drops too low, the heart has difficulty pumping blood to parts of the body, especially distant parts.
• Vasculitis: This is an inflammation of the blood vessels. This can also cause the veins to narrow.
• Medical devices: During some surgeries, when connected to life-saving equipment, or due to devices inserted into blood vessels, blood flow can sometimes be obstructed.

What factors increase the risk of developing ischemia?

Some people are more likely to develop ischemia than others. Let's take a look at what they are:

• If there is already ischemia in another part of the body.
• High blood pressure or low blood pressure.
• High cholesterol level in the blood.
• Diabetes (Diabetes Mellitus).
• Lack of physical activity.
• Obesity means being overweight.
• Chronic Kidney Disease (CKD).
• Use of tobacco products (smoking, smokeless tobacco).
• If you have had a previous heart attack.
• If you have had a previous stroke.
• Sleep apnea.
• Blood clotting disorders.
• Some medications, for example, birth control pills.

If you have one or more of these risk factors, controlling them is very important to prevent ischemia.

What are the complications that can occur due to ischemia?

If ischemia is not treated properly, it can lead to serious complications because cells begin to die without oxygen.

• Heart attack: This happens when the blood supply to the heart muscle stops.
• Critical limb ischemia: A condition in which the blood supply to an arm or leg is severely reduced, causing the part to die. It may even need to be amputated.
• Stroke: When blood flow to the brain stops.
• Transient ischemic attack (TIA).
• Perforation of your small intestine: When the intestine doesn't get enough blood, the intestinal wall can weaken and become perforated.
• Gangrene, a condition in which tissue dies and rots: This can also be accompanied by infection.

That is why it is important to seek medical advice as soon as symptoms of ischemia appear.

How do you detect ischemia?

If you have symptoms of ischemia, when you see a doctor, he will ask you about your symptoms and any previous illnesses you have. He will then do a physical exam, looking specifically at the area where you have the problem. In addition, he will order some tests to diagnose the disease. (Corrected 'நிரணய' to a Sinhala term like "தஹாவுரு").

Revised: In addition, some tests may be ordered to confirm the diagnosis.

What tests are done to detect this?

There are various tests that can be used to determine if ischemia is present, how severe it is, and where it is located. Some of them include:

• Blood tests: Check for heart damage, cholesterol levels, and diabetes.
• Ankle-brachial index test: A simple test to check for poor blood flow to the legs.
• Doppler ultrasound: This can be used to see how blood flows through blood vessels and whether there are any blockages.
• Echocardiogram: An ultrasound test to look at the function of the heart, including the heart chambers and valves.
• Angiogram: A special liquid is injected into the blood vessels and an X-ray is taken to pinpoint the exact location of blockages and narrowings in the veins.
• MRI (Magnetic Resonance Imaging) scan.
• CT (Computed Tomography) scan.
• Exercise stress test:They look at how your heart responds when you exercise.
• Electrocardiogram (EKG/ECG): Records the electrical activity of the heart.
• PET scan (Positron Emission Tomography scan): Can see things like the amount of blood flowing to tissues.

The doctor will decide what to do with these tests based on your condition.

How is Ischemia treated?

The main goal of treating ischemia is to restore adequate blood flow to the oxygen-deprived part of the body. This can be achieved through medications, lifestyle changes, and some medical procedures or surgeries.

Medicines

• Blood pressure-lowering medicine: If you have high blood pressure.
• Cholesterol-lowering medicine: Control atherosclerosis.
• Anticoagulants - Blood thinners: Prevent blood clots from forming and stop existing clots from getting bigger.
• Antiplatelets: This is a type of medication that reduces blood clot formation (e.g. aspirin).
• Thrombolytics - Blood clot-dissolving medications: These are given when a blood vessel is suddenly blocked by a blood clot (e.g., heart attack, stroke).
• Antibiotics if there is an infection.

Lifestyle changes

These are very important, because medication alone is not enough.

• Engage in physical exercise at least five days a week, for at least 30 minutes a day.
• Maintaining a healthy weight.
• Complete avoidance of tobacco products.
• Adopt a nutritious diet: Eat more fruits, vegetables, greens, and fiber-rich foods. Reduce oil, sugar, and salt.

Surgery or other medical procedures

Sometimes, if medication alone isn't enough, doctors may do things like:

• Angioplasty and stenting: A narrowed blood vessel is inflated with a balloon-like device, and a small mesh-like device (stent) is inserted to keep it from narrowing again.
• Thrombectomy: The removal of a blood clot in a blood vessel.
• Peripheral artery bypass surgery: A new artery or artificial vein is connected to the blocked artery to create a new path for blood flow.
• Atherectomy: Removal of fatty deposits (plaque) that have built up inside the blood vessels.
• Coronary Artery Bypass Graft (CABG): This is a bypass surgery performed on the blood vessels of the heart.
• Endarterectomy: A surgery to remove the fatty layer inside an artery.
• Laparoscopic surgery or laparotomy: These are surgeries performed for ischemic conditions of the abdomen.

What happens if I have ischemia?

Ischemia of any kind is a threat to your health. It means your cells don't get the oxygen they need to survive. Everyone's situation is different. However, the sooner you get treatment, the better the outcome. For example, if you have limb ischemia in an arm or leg, you have a 93% chance of saving the limb if you have surgery right away. But if you have surgery within 8 hours of the onset of ischemia, that percentage drops to 78%.

Imagine, if ischemia occurs in a vital organ like the brain or heart, immediate treatment can be the difference between life and death. Every minute counts. That is what determines the extent of the damage caused by ischemia and how it will affect the rest of your life.

How to reduce the risk of developing ischemia?

Fortunately, there are many things we can do to reduce our risk of developing ischemia:

• Eat nutritious foods: things like fruits, vegetables, legumes, and whole grains.
• Drink enough water: Avoid dehydration.
• Avoid tobacco products completely.
• Engage in regular physical exercise.
• Manage conditions such as diabetes, high blood pressure, and high cholesterol that can cause ischemia.

How do I take care of myself?

If you have ischemia, it is very important to take your medication exactly as prescribed by your doctor, without missing a single day. If you forget to take your medication, set an alarm on your phone. Or use a pill organizer to keep your medication organized by day.

No matter what type of ischemia you have, you can take care of yourself by changing your daily habits and managing other conditions that may be causing ischemia.

When should I see my doctor?

Don't miss your follow-up appointments with your doctor. Tell him or her about any problems that don't go away or that keep coming back. Tell him or her about any side effects from your medications. If you've had surgery or other medical procedures, you should also go for follow-ups to check on your recovery.

When should I go to an Emergency Treatment Unit (ETU) ?

Seek immediate medical attention if you experience these symptoms:

• Sudden, severe abdominal pain.
• Symptoms of a heart attack or stroke: (e.g. severe chest pain, difficulty breathing, difficulty speaking, drooping on one side of the face, numbness in an arm).
• Unbearable pain in the leg or foot.

What questions should I ask the doctor?

You can ask your doctor questions like these:

• How long do I need to take the prescribed medication?
• What is my risk of developing another type of ischemia?
• Are my children and other family members at increased risk of developing ischemia because of my diagnosis?
• How often should I see you?

If you have experienced a medical emergency related to ischemia, you may be wondering what to expect next. Your doctor can guide you through the next steps in your treatment. But you should also consider what changes you will make to your daily life – even if only for a short time. This is a time to gather your friends and family around you. They may want to help, but they may not know how. Ask them to run errands or help with chores while you recover. Others may be able to ease your fears and make you laugh. The support of others can be a great help in your recovery.

Summary (Take-Home Message)

So, Ischemia, simply put, is a condition where there is a lack of oxygen in a part of our body due to reduced blood flow. This can affect any part of the body, including the heart, brain, limbs, and intestines. It is important to seek medical attention as soon as symptoms appear, as prompt treatment can prevent serious damage.

Don't worry, there are good treatments for ischemia. We can also prevent this condition by adopting a healthy lifestyle and controlling risk factors. It is also essential to follow the advice of your doctor and go for regular checkups. You are not alone, and there are many people who can help you on this journey.

` Ischemia, Ischemia, Blood circulation, Lack of oxygen, Heart attack, Stroke, Symptoms, Treatment, Atherosclerosis