What is the maximum time a tourniquet should be left on without reassessment?

The maximum time a tourniquet should be left on without reassessment is typically set at 2 hours. This timeframe is significant because prolonged application of a tourniquet can lead to potential complications, such as tissue damage or loss of function in the affected limb due to ischemia.

After the initial 2-hour period, it is crucial to reassess the situation to determine whether the tourniquet needs to be left in place longer, or if it can be safely loosened or removed. This reassessment may involve evaluating the patient's vital signs, the level of bleeding control, and any neurological status in the affected limb. Additionally, guidelines emphasize that if a tourniquet must be left in place beyond this time due to severe hemorrhage, medical control should be notified for further instructions, and continuous monitoring of the patient's condition is vital.

Maintaining awareness of the time a tourniquet has been applied helps in making critical decisions regarding patient care and potential transport to advanced medical facilities.