If a tourniquet is found to be ineffective upon reassessment, what action should be taken?

When a tourniquet is deemed ineffective during reassessment, it is crucial to take immediate action to control bleeding. Tightening the existing tourniquet, if possible, or applying a second tourniquet alongside the first is a sound approach because it can increase the pressure applied to the limb, thus improving hemostatic effectiveness. This method is supported by the principle that sufficient pressure must be exerted to occlude arterial blood flow completely, and if the initial tourniquet was not effective, modifying the existing application or using an additional one may provide the necessary compression.

The rationale behind this choice also highlights the importance of maintaining control of hemorrhage in a tactical environment where rapid and effective interventions can save lives. Further, this action allows for continued evaluation of the effectiveness of both tourniquets in a time-sensitive scenario.

In contrast, leaving the tourniquet as is does not address the issue of uncontrolled bleeding and could lead to further complications. Applying a pressure dressing without first addressing the inadequacy of the tourniquet may not provide the necessary control over arterial bleeding. Calling for additional medical support is certainly important, but it may not provide immediate assistance in controlling life-threatening hemorrhage that requires urgent intervention. Therefore, the best course of action in this