What is the “lethal triad” in trauma patients?
The ominous trio of signs in trauma patients, including coagulopathy, acidosis, and hypothermia has been called the “lethal triad.” These factors perpetuate one another, thus creating a vicious cycle that is difficult to interrupt. Early development of coagulopathy is a well-recognized marker of the severity of an injury, and its presence is associated with a significantly increased risk of death.
New England Journal of Medicine - Vol. 361, No. 15, October 8, 2009