What is a potential consequence of over-tightening a tourniquet?

Over-tightening a tourniquet can lead to compression injuries to blood vessels. This occurs because excessive pressure inhibits normal blood flow, leading to ischemia in the affected tissues. Prolonged or excessive compression can damage blood vessels by compromising their structural integrity, which may result in conditions like thrombosis or even necrosis of nearby tissues.

In contrast, the other options do not accurately reflect the consequences of over-tightening a tourniquet. Increased blood flow would be counterintuitive in a situation where a tourniquet is applied, as its primary purpose is to occlude blood flow to control bleeding. Enhanced nerve protection or improved patient comfort are also unlikely outcomes; instead, tight tourniquets can lead to nerve damage and significant discomfort for the patient, highlighting the importance of applying tourniquets carefully and appropriately.