Thrombophlebitis is best described as:

• A. Inflammation of Arteries
• B. Abnormal Heart Sounds
• C. Blood Blocks Flow of a Vein
• D. Varicose Veins

Answer: (C)

Thrombophlebitis means a vein is inflamed and contains a clot, which can block blood flow through that vein. The essential idea is that a thrombus forms inside the vein and narrows or stops venous flow, leading to symptoms like tenderness, warmth, and swelling along the affected vein. This differs from inflammation of arteries (arteritis), which involves arteries rather than veins; abnormal heart sounds point to heart-related issues; and varicose veins are enlarged superficial veins from valve weakness and aren’t defined by a clot obstructing flow. Recognizing the clot within the inflamed vein explains why venous return is impeded in thrombophlebitis.