What does DIC stand for?
Disseminated Intravascular Coagulation
What is DIC?
A serious disorder where widespread clotting and bleeding occur due to an overactivated coagulation cascade.
What usually triggers DIC?
A severe underlying condition that activates the clotting cascade.
Give an example of a condition that can trigger DIC.
Postpartum hemorrhage
What happens to the coagulation cascade in DIC?
It becomes overactivated, causing microclots to form throughout small blood vessels.
What happens after microclots form?
The body uses up platelets and clotting factors, leading to deficiency and bleeding.
Describe the DIC cycle in simple terms.
Trigger → Clotting → Platelet/clotting factor use → Bleeding → Clot breakdown → Worsened bleeding → Cycle continues.
What are some common triggers of DIC?
• Infections (esp. sepsis)
• Trauma
• Cancer (end-stage)
• Obstetric complications
• Severe burns
• Hemolytic transfusion reaction
• Major surgery
What obstetric complication can cause DIC?
Postpartum hemorrhage (may require hysterectomy)
What infection is a major cause of DIC?
Sepsis
What are the bleeding signs of DIC?
• Petechiae
• Ecchymoses
• Bleeding gums
• Epistaxis
• GI bleed
• Hematuria
• Bleeding from invasive sites
What are the systemic or clotting-related signs of DIC?
• Hypotension
• Tachycardia
• Confusion/AMS
• Fever
• AKI
• Respiratory failure
• Liver dysfunction
• Cardiac compromise
Why does AKI occur in DIC?
Because microclots block blood flow to the kidneys.
What is the first priority in DIC management?
Treat the underlying cause (e.g., infection, trauma, cancer, obstetric cause).
What diagnostic test shows low platelets in DIC?
CBC
What happens to PT and PTT in DIC?
They are prolonged (blood is very thin).
What happens to fibrinogen levels in DIC?
Low, because it’s used up in excessive clotting.
What happens to D-Dimer levels in DIC?
Elevated, due to breakdown of microclots.
Why is the D-Dimer elevated?
It indicates active fibrinolysis — the body is breaking down clots.
What lab combination strongly suggests DIC?
Low platelets, prolonged PT/PTT, low fibrinogen, and elevated D-dimer.
What is the general approach to DIC treatment?
Treat cause, replace what’s missing, support organs, prevent complications.
What is the treatment if the patient is bleeding in DIC?
• Platelet transfusion if <50,000
• Fresh Frozen Plasma (FFP) if PT/aPTT prolonged
• Cryoprecipitate if fibrinogen <100
What blood product replaces fibrinogen?
Cryoprecipitate
What is given if PT/aPTT are prolonged?
Fresh Frozen Plasma (FFP)