What is the significance of timing when applying a tourniquet?

The significance of timing when applying a tourniquet is critical because it directly relates to the potential complications that can arise from its use. If a tourniquet is applied too late, it may not effectively control bleeding, leading to more severe blood loss and increased risk of shock or death. Conversely, if a tourniquet is left on for an extended period, it can cause damage to the tissues and nerves below the application site due to lack of blood flow, resulting in conditions like necrosis or loss of limb function. Therefore, understanding the timing in relation to these potential complications is essential for ensuring the tourniquet can be effective while minimizing the risks associated with its prolonged use.