What is the Difference Between Thrombus and Embolus?

The main difference between a thrombus and an embolus lies in their formation and movement within the blood vessels:

• Thrombus: A thrombus is a blood clot that forms in a vein. It occurs when a blood clot, or thrombus, develops in a blood vessel and reduces the flow of blood through the vessel. Venous thrombosis is when the blood clot blocks a vein, which carries blood from the body back into the heart.
• Embolus: An embolus is anything that moves through the blood vessels until it reaches a vessel that is too small to let it pass. It occurs when a piece of a blood clot, foreign object, or other bodily substance obstructs blood flow. An embolus can be a small piece of a blood clot that breaks off (thromboembolus) or other substances such as fat, air, amniotic fluid, a tumor, or a foreign substance like talc, iodine, cotton, or a tiny piece of catheter tube.

Both thrombosis and embolism can block blood flow and increase the risk of a heart attack or stroke. However, a thrombus is a stationary blood clot that forms in a blood vessel, while an embolus is a particle or mass that flows through the bloodstream and can cause a blockage elsewhere.

Comparative Table: Thrombus vs Embolus

The main difference between a thrombus and an embolus is their formation and location within the blood vessels. Here is a table comparing the two:

Both thrombosis and embolism are serious conditions that can block blood flow and increase the risk of a heart attack or stroke. It is crucial to seek immediate medical attention if you suspect either of these conditions.