Why is Phlebothrombosis more likely to cause pulmonary emboli than thrombophlebitis?

Phlebothrombosis and thrombophlebitis both refer to the formation of blood clots in the veins. However, phlebothrombosis involves a deeper vein, typically in the leg, while thrombophlebitis involves a more superficial vein, often in the arm or leg.

Blood clots that form in deep veins are more likely to break off and travel to the lungs, causing a pulmonary embolism (PE). This is because the deep veins are larger and the blood flow is faster, which makes it easier for a clot to dislodge. In contrast, blood clots in superficial veins are less likely to cause PE because the veins are smaller and the blood flow is slower.

Additional factors that can increase the risk of PE include:

* Age over 60

* Obesity

* Smoking

* Diabetes

* Heart disease

* Cancer

* Pregnancy

* Recent surgery or trauma

If you experience any symptoms of PE, such as sudden shortness of breath, chest pain, or coughing up blood, it is important to seek medical attention immediately.