A 62-year-old man with newly diagnosed pancreatic adenocarcinoma presents with PT 18 seconds (normal 12–14), aPTT 38 seconds (normal 25–35), platelet count 120,000/μL, and fibrinogen 150 mg/dL (normal 200–400). D-dimer is markedly elevated. What is the most appropriate immediate next step?

Explanation

## Clinical Diagnosis This patient has **Disseminated Intravascular Coagulation (DIC)** secondary to pancreatic cancer — a prothrombotic malignancy that triggers tissue factor-mediated thrombin generation. ### DIC Diagnostic Criteria (ISTH Score) | Parameter | Finding | Points | |-----------|---------|--------| | Platelet count | 120,000/μL | 1 | | D-dimer / FDP | Markedly elevated | 3 | | PT prolongation | 18 sec (4 sec above normal) | 1 | | Fibrinogen | 150 mg/dL | 1 | | **TOTAL** | | **6 (≥5 = overt DIC)** | ## Management Algorithm for DIC ```mermaid flowchart TD A[Overt DIC diagnosed]:::outcome --> B[Treat underlying cause]:::action A --> C[Supportive hemostatic therapy]:::action C --> D{Active bleeding?}:::decision D -->|Yes| E[FFP + Cryoprecipitate + Platelets]:::action D -->|No| F[Observe, transfuse PRN]:::action B --> G{Thrombosis risk?}:::decision G -->|High| H[Consider anticoagulation after hemostasis secured]:::action G -->|Low| I[Supportive care only]:::action ``` ## Key Point: **In DIC with coagulopathy, the immediate priority is correction of coagulation defects with FFP and cryoprecipitate.** Anticoagulation (heparin) is considered only AFTER hemostasis is secured and thrombosis risk is high. ## High-Yield Facts: - **FFP replaces all clotting factors** (PT prolongation); cryoprecipitate replaces fibrinogen specifically. - **Heparin is contraindicated in active bleeding** but may be considered in non-bleeding DIC with predominant thrombosis (e.g., acral necrosis, thrombosis). - **Platelet transfusion is indicated** when count < 50,000/μL or < 100,000/μL with active bleeding. - Treat the **underlying malignancy** — this is the definitive management. ## Clinical Pearl: DIC in malignancy (especially pancreatic, prostate, lung cancers) is a medical emergency. The sequence is: (1) Diagnose and treat underlying cancer, (2) Support coagulation with FFP/cryo, (3) Transfuse platelets if needed, (4) Consider anticoagulation only if thrombosis predominates and bleeding is controlled.