What is an important step when applying a tourniquet?

Marking the time when a tourniquet is applied is crucial for several reasons. When a tourniquet is used, it effectively stops blood flow to the affected extremity, but it can also lead to tissue damage if left on for extended periods. By recording the time of application, medical professionals can assess the urgency of removing the tourniquet during treatment and monitor for potential complications such as loss of limb viability. This time tracking also provides critical information for subsequent medical interventions that may be required once the patient reaches definitive care, ensuring the healthcare team can make informed decisions about how to proceed.

In contrast, placing the tourniquet too low on the extremity may not effectively control the hemorrhage since the goal is to occlude arterial blood flow. Tightening until blood flow resumes could undermine the purpose of the tourniquet, as it should be applied tightly enough to stop blood flow, but not loosened. While the principle of using a tourniquet as a last resort is sound, in life-threatening hemorrhagic situations, a timely application may be necessary and prioritized to manage severe bleeding effectively.