Understanding the Causes of Blood Clots (Thrombosis)
This article explores the various causes of thrombosis, including prolonged immobility, surgical procedures, vessel damage, and pregnancy-related factors. It emphasizes the importance of risk assessment and preventive measures, especially during or after surgeries and in pregnant women. Understanding these factors can help in early detection and management of blood clots to prevent serious health complications.
Understanding the Causes of Blood Clots (Thrombosis)
Thrombosis can sometimes develop unexpectedly, with no clear trigger. However, certain conditions and lifestyle factors can significantly elevate the risk.
Prolonged immobility causes blood to pool in the lower extremities, typically in the legs. This is usually not a concern if normal activity resumes quickly, promoting healthy circulation. However, extended periods of immobility, such as post-surgery, during illness or injury, or long-distance travel, can slow blood flow and increase clot formation risk.
Hospital stays and surgeries, especially those exceeding 90 minutes or involving the legs, hips, or abdomen, heighten the chance of thrombosis. Surgical procedures addressing inflammatory or abdominal issues, like appendicitis, can also raise risk. Patients are assessed upon admission and given preventive measures accordingly.
Damage to blood vessel walls from injuries or surgical procedures can cause narrowing or blockage, fostering clot formation. Internal clots, known as thrombosis, may develop due to vessel injury during operations.
Pregnancy is another factor linked to a specific type of blood clot called Venous Thromboembolism (VTE); the risk is about one in 100,000 women of childbearing age. Additional factors include being over 35, carrying multiples, cesarean sections, smoking, and dehydration. Women using estrogen-containing contraceptives or hormone therapy also face increased risk, unlike progesterone-only pills which pose no such threat.
