🫀 Thrombosis and Heart Problems
🩸 What is Thrombosis?
📘 Definition:
Thrombosis is the formation of a thrombus (blood clot) inside a blood vessel.
🧠 A thrombus is a solid lump or plug made up of blood components like platelets, fibrin, and blood cells.
💡 Example:
Think of a traffic jam inside a tunnel. Just like too many cars blocking the tunnel stops the flow of traffic, a thrombus blocks the flow of blood inside a vessel.
🛑 What happens when a thrombus blocks a vessel?
- Sometimes the thrombus completely blocks the vessel.
- Other times it partially blocks it, slowing down the blood flow.
- In both cases, the organ that receives blood from that vessel suffers.
🧪 What causes Thrombus Formation?
- Injury or irritation to the inner wall of the blood vessel
→ Just like scratches on a pipe can attract rust, damage to vessels can trigger clotting. - Slow blood flow due to inactivity
→ Lying in bed for many days (e.g. after surgery or illness) slows blood flow and increases clot risk. - Diseases like pneumonia or tuberculosis
→ These diseases can increase clotting factors in blood or cause inflammation.
⚠️ Effects of Thrombosis
- If the thrombus forms in coronary arteries, it can cut off blood to the heart → Heart attack (myocardial infarction).
- If the thrombus forms in blood vessels of the brain, it leads to a stroke.
- A thrombus may break free and travel in the bloodstream.
→ This moving clot is called an embolus, and it can block vessels somewhere else in the body.
💓 Understanding Heart Attacks
🩺 Role of Coronary Arteries:
These arteries supply oxygen-rich blood to the heart muscles.
Without blood supply, the cardiac muscles can’t survive. They begin to die in a few minutes.
📘 Definition
When a part of heart muscle dies due to lack of oxygen, it is called myocardial infarction, or commonly, a heart attack.