Tourniquet Conversion

Scientific knowledge evolves. As mankind discovers more information, the view of our world and how it works changes as well. The use of tourniquets, which I have discussed at length a couple of times on this very blog, are a great example. We were once taught that, once a tourniquet goes on, it stays on unless the patient is in the room with a trauma surgeon. That turns out to be only partially correct.

At the end of the day, trauma is a surgical emergency. What a trauma patient needs is access to that trauma surgeon. Getting a patient to the hospital within a rapid timeframe, often referred to as “the golden hour” greatly increases the patient’s chances of survival. Remember that serious trauma is first and foremost a surgical emergency. Trauma patients don’t need a tricked out first aid kit- they need a trauma surgeon. All they need you to do in the field is keep them alive and prevent them from furthering their injury until they can get on the operating table.

For that reason, tourniquet training for most Americans has followed simple, strict guidance: apply one high and tight to limbs to stop life-threatening bleeding, and leave removal to advanced medical care personnel. That is no longer the case.

So what changed? The war in Ukraine. In the US, and in US controlled battlefields, people who receive gunshot wounds are one helicopter ride away from a trauma surgeon, and the vast majority of the patients make it to the surgeon’s operating table within that hour and have good results. In Ukraine, the nature of the war there is such that almost no one gets a helicopter ride, and with killer drones circling everywhere, very few of those injured are transported by ground in anything resembling even the “golden day or two” and, if they are wearing a tourniquet, wind up wearing it for days. Casualty evacuation in Ukraine often exceeds 6 hours, and the liberal use of limb tourniquets may have increased morbidity.

That sets up a whole list of new problems.

Leaving a tourniquet on for hours or even days causes other issues. Once a tourniquet is in place, it stops blood from flowing to the affected limb. Once deprived of their blood supply, those cells begin taking measures to protect themselves, and after a period of time, those cells die. As they die, they release their contents into the surrounding tissue. When the tourniquet is removed, those contents make it to the kidneys and clog them up with all of that debris. The condition is called rhabdomyolysis. The longer a limb tourniquet is in place, the higher the risk of compartment syndrome, vascular thrombosis, rhabdomyolysis, and irreversible myonecrosis resulting in major tissue loss and often necessitating limb amputation, kidney failure, and death.

If bleeding is controlled with a tourniquet, attempts to remove the tourniquet as early as possible to avoid the negative consequences are essential. However, if the removal is not done correctly, there is a risk the bleeding that the tourniquet was supposed to stop will also kill the patient. The act of removing a tourniquet (called ‘tourniquet conversion’) is now changing the training being put out to US special forces troops, and is especially important to preppers here in the US.

What this means for you

In the US, we are usually a quick helicopter ride away from a trauma surgeon, but that may not always be the case. In a disaster or TEOTWAWKI situation, those helicopters aren’t coming. At the same time, a tourniquet left on for more than 2 hours can itself be a hazard. Before attempting this, please review my post on treating gunshot wounds that you can find here.

Important: Never attempt tourniquet conversion if the patient is in shock, the wound cannot be continuously monitored for re-bleeding, or if the tourniquet is applied above a traumatic amputation.

Shock being defined here as the loss of consciousness, or a blood pressure less than 90/xx.

The Conversion Steps (The “Plus-1” Method)

1. Prepare: Place a second, loose tourniquet on the bare limb just above the first one, but do not tighten it yet.
2. Pack: Firmly pack the wound cavity with hemostatic gauze (if available) or standard rolled gauze, maintaining direct digital pressure for at least 3 minutes.
3. Dress: Apply a pressure dressing securely over the packed wound.
4. Release: Slowly loosen the original tourniquet (over at least 1 minute) while meticulously observing the wound for bleeding.
5. Monitor: If bleeding is controlled, leave the primary tourniquet in place but fully loosened in case bleeding recurs.

Optimal conversion should be attempted within 2 hours of the initial application when conditions are safe and stable. If bleeding restarts upon release, re-tighten the primary tourniquet or utilize the newly placed backup tourniquet.

For more information, see the article Tactical Medicine Tourniquet Conversion or consult the sources below:

Sources:

Misuse of Tourniquets in Ukraine may be Costing More Lives and Limbs Than They Save.

Rethinking limb tourniquet conversion in the prehospital environment (pdf warning)

Tactical Combat Casualty Care skill card: Tourniquet Conversion (pdf warning)

Tourniquet Conversion: A Recommended Approach in the Prolonged Field Care Setting

Tourniquet Conversion: The Critical Skill Nobody Teaches After You Stop the Bleeding (2026)