Which laboratory finding is most consistent with acute DIC?

RRB Nsg. Superintendent - 29 April 2025 (Shift-3rd)

Medical & Surgical Nursing

Medium

Appeared in: RRB Nsg. Superintendent - 29 April 2025 (Shift-3rd)

Explanation

Acute DIC is a consumptive coagulopathy, meaning it uses up platelets and clotting factors.
The widespread activation of the coagulation cascade leads to the formation of microthrombi throughout the circulation.
This process traps and consumes platelets, resulting in thrombocytopenia (a low platelet count).
Simultaneously, clotting factors are depleted, which prolongs the time it takes for blood to clot, measured by the Prothrombin Time (PT) and Partial Thromboplastin Time (PTT).

Option B: In acute DIC, fibrinogen is rapidly consumed to form fibrin clots, leading to decreased (hypofibrinogenemia) levels, not elevated levels. Elevated fibrinogen is an acute-phase reactant and might be seen in other inflammatory conditions but not typically in the consumptive phase of acute DIC.
Option C: Platelets are consumed in the formation of widespread microclots in DIC. This leads to a decreased platelet count (thrombocytopenia), not an elevated one.
Option D: In DIC, the body's fibrinolytic system is activated to break down the numerous clots. This process generates large quantities of fibrin degradation products (FDPs) and D-dimer. Therefore, FDP levels are significantly elevated, not decreased.

Visual 1: Flowchart: Pathophysiology of DIC. A visual flowchart can illustrate how a trigger (like sepsis) leads to widespread coagulation, consumption of platelets/factors, formation of microthrombi, and secondary fibrinolysis, connecting the disease process to the lab findings.
Visual 2: Table: Lab Profile of DIC vs. Liver Disease. A comparison table can help differentiate the lab findings in DIC from other conditions with similar presentations, such as severe liver disease, by highlighting key differences (e.g., Factor VIII levels).

Clinical Relevance

Nursing practice connection: This is primarily an exam-oriented knowledge point with limited direct bedside application, so retain Laboratory diagnosis of acute Disseminated Intravascular Coagulation (DIC) as background academic context rather than a clinical decision trigger.
Recognizing the classic lab profile of DIC is critical for nurses to anticipate severe complications. The combination of low platelets and prolonged clotting times signals a high risk for both bleeding and thrombosis.
Nursing priorities include meticulous monitoring for signs of bleeding (e.g., from IV sites, gums, urine) and thrombosis (e.g., organ dysfunction, peripheral cyanosis), and careful administration of blood products (platelets, FFP, cryoprecipitate) as ordered.
The primary treatment for DIC is to identify and treat the underlying cause (e.g., antibiotics for sepsis, delivery in obstetric complications). Nursing care is supportive, aiming to manage hemostasis and maintain organ perfusion.

How to Approach the Question

First, identify the core concept of the question: the key laboratory findings of acute DIC.
Recall the pathophysiology of DIC. The name 'Disseminated Intravascular Coagulation' implies widespread clotting. This process is not normal; it's a pathologic overactivation.
Think about the consequences of this overactivation. What does the body use to make clots? Platelets and clotting factors.
Reason that if the body is making too many clots everywhere, it must be 'consuming' these resources. Therefore, expect platelets and clotting factors to be low.
Translate this into lab values: Low platelets = thrombocytopenia. Low clotting factors = prolonged PT and PTT.
Evaluate the options based on this reasoning. The option 'Prolonged PT/PTT with thrombocytopenia' directly matches the expected consequences of a consumptive coagulopathy.

Concept Tested & Keywords

Concept Tested: Laboratory diagnosis of acute Disseminated Intravascular Coagulation (DIC)
Stem keywords: laboratory finding, acute DIC
Lead-in keywords: most consistent

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