Trauma is already having a pretty shitty day. Then the patient gets cold, acidotic, stops clotting properly, and apparently the human body decides three problems aren't enough and throws low calcium into the mix.

Welcome to the lethal triad. Or, because medicine can never leave well enough alone, the lethal diamond.

In this episode of That Paramedic Podcast, Jay and Courtney break down what actually happens when trauma wrecks the body's ability to clot. We start with platelets, fibrin, and the clotting cascade before following the patient into the vicious feedback loop of hypothermia, acidosis, and coagulopathy. Then we add hypocalcemia during massive transfusion and somehow make the whole situation even worse.

Along the way, we talk damage-control resuscitation, warming patients, blood products, calcium, TXA, why drowning someone in cold crystalloid isn't particularly helpful, and why stopping visible bleeding doesn't necessarily mean you've stopped the physiological disaster happening underneath.

There are garden hoses. Sandbags. Concrete. Anti-lock brakes. Surprise vampires. An alarming amount of musical theatre. And more spontaneous singing than any discussion of traumatic coagulopathy has ever required.

Come for the clotting cascade.

Stay for Clotting Factors in Your Fucking Face.