Guidelines for Safely Performing a Tourniquet Test

Indications for Tourniquet Use

Tourniquets are indicated in cases of active limb hemorrhage when direct compression is ineffective, as recommended by the American Society of Anesthesiologists 1, 2
The American College of Surgeons suggests that tourniquets are appropriate for amputations, presence of foreign bodies in hemorrhagic wounds, absence of radial pulse, or when multiple simultaneous actions must be performed 1, 3

The American Heart Association recommends applying the tourniquet proximal to the bleeding site 2
The American College of Surgeons advises ensuring the tourniquet is tight enough to abolish distal pulses 4, 1
The American Heart Association suggests documenting the time of application clearly and communicating this to all healthcare providers 5

The American Society of Anesthesiologists recommends re-evaluating the effectiveness, usefulness, and location of the tourniquet as soon as possible after application 1, 2
The American College of Surgeons advises maintaining the shortest possible application time and smallest possible area of ischemia to limit morbidity 1, 3
The American Society of Anesthesiologists suggests avoiding iterative tourniquet releases as they can aggravate local muscle injury and systemic rhabdomyolysis 4, 1

The American College of Surgeons recommends that if a tourniquet appears mandatory, apply a second tourniquet distal to the first before loosening the proximal one to avoid recurrence of bleeding 4, 6
The American Society of Anesthesiologists advises gradually loosening the tourniquet while monitoring for resumption of bleeding 1

The American Heart Association suggests that when applied properly, tourniquets do not appear to increase the risk of limb loss 3
The American College of Surgeons recommends that in mass casualty incidents or unsafe environments, more liberal use of tourniquets may be warranted 5

The American Heart Association recommends recording the time of tourniquet application 5
The American Society of Anesthesiologists advises noting the location of application 1
The American College of Surgeons suggests recording all reassessments and any adjustments made 1, 2

Iterative tourniquet releases for the sake of ischemic sparing aggravate both local muscle injury and systemic rhabdomyolysis morbidity, according to the American College of Surgeons and other medical guidelines 7, 8
The 2010 American Heart Association and American Red Cross International Consensus explicitly identified "advantages/disadvantages to intermittent release of an applied tourniquet" as a knowledge gap with no supporting evidence available, highlighting the need for further research 9, 10, 11

Repeated ischemia-reperfusion cycles trigger enhanced transendothelial neutrophil migration with potential for progressive muscle injury, as reported by the American Physiological Society 9, 10
Metabolic markers of muscular injury are directly related to tourniquet duration, emphasizing the importance of expeditious definitive hemorrhage control, according to the American Heart Association 9, 10, 12

Local hypothermia of the extremity showed protection against adverse effects of ischemia in animal studies and one surgical study, and should be considered for prolonged tourniquet application, as recommended by the American College of Surgeons 9, 10, 11, 12, 13

Never perform intermittent tourniquet release cycles in an attempt to reduce ischemic injury—this worsens both local and systemic outcomes, as stated by the American College of Surgeons 7, 8