What is Disseminated Intravascular Coagulation (DIC)?

What is Disseminated Intravascular Coagulation (DIC)?

• A. A pathological activation of coagulation with consumption of coagulation proteins and platelets, leading to abnormal bleeding.
• B. A benign condition with no bleeding risk.
• C. A deficiency of platelets that causes isolated bleeding.
• D. A primary coagulation factor deficiency unrelated to tissue injury.

Answer: (A)

DIC is a state of widespread, abnormal activation of the coagulation system triggered by an underlying illness or injury. This rampant activation leads to the formation of microthrombi throughout the vasculature, which consumes platelets and coagulation proteins faster than the body can replace them. As a result, patients develop both thrombosis and a bleeding tendency because the clotting factors and platelets become depleted. Clinically this shows up as abnormal bleeding and signs of organ ischemia or dysfunction from microvascular clots, with labs often showing low platelets, prolonged PT/PTT, low fibrinogen, and elevated D-dimer. It’s typically a secondary process to other severe conditions (like sepsis, trauma, obstetric complications, or cancer) rather than a primary problem. The other options don’t fit because DIC is not a benign condition with no bleeding risk, it is not simply a platelet deficiency causing isolated bleeding, and it is not a primary deficiency of a single coagulation factor unrelated to tissue injury.

DIC is a state of widespread, abnormal activation of the coagulation system triggered by an underlying illness or injury. This rampant activation leads to the formation of microthrombi throughout the vasculature, which consumes platelets and coagulation proteins faster than the body can replace them. As a result, patients develop both thrombosis and a bleeding tendency because the clotting factors and platelets become depleted. Clinically this shows up as abnormal bleeding and signs of organ ischemia or dysfunction from microvascular clots, with labs often showing low platelets, prolonged PT/PTT, low fibrinogen, and elevated D-dimer. It’s typically a secondary process to other severe conditions (like sepsis, trauma, obstetric complications, or cancer) rather than a primary problem.

The other options don’t fit because DIC is not a benign condition with no bleeding risk, it is not simply a platelet deficiency causing isolated bleeding, and it is not a primary deficiency of a single coagulation factor unrelated to tissue injury.