Hematological Diseases and Nursing Management

Disseminated Intravascular Coagulation (DIC)

Disseminated Intravascular Coagulation (DIC) is a severe, systemic, and life-threatening disorder of the coagulation cascade. It is not a disease in itself but rather a complication of an underlying condition. In DIC, the body's clotting mechanisms become overactive, leading to widespread microvascular clotting that consumes all available clotting factors and platelets, which paradoxically results in massive, uncontrollable bleeding.

A primary risk factor and common trigger for the development of DIC is septicemia (a systemic blood infection). When a patient suffers from severe sepsis, the inflammatory response can trigger the widespread activation of the clotting cascade, setting the stage for the consumption of clotting components.

Thrombocytopenia and Bleeding Risks

Thrombocytopenia is a condition characterized by a low platelet count. Because platelets are essential for primary hemostasis (the initial plug that stops bleeding), a low count significantly increases the risk of spontaneous bleeding and bruising.

While laboratory values are vital, nurses must prioritize physical assessment findings. For example, while a platelet count of $52,000/\text{ml}$ is clinically low, the presence of bullae on the oral mucosa is a critical clinical finding. Oral bullae indicate active mucosal bleeding, which is a high-priority finding that must be communicated to the healthcare provider immediately to prevent further hemorrhage.

Anticoagulation Therapy: Warfarin Management

Patients with conditions such as atrial fibrillation may be prescribed warfarin sodium to prevent the formation of blood clots. However, warfarin has a narrow therapeutic index, meaning the difference between a therapeutic dose and a toxic dose is small.

Nurses must monitor two primary laboratory values to ensure safety:

• Prothrombin Time (PT): Measures how long it takes for the blood to clot.
• International Normalized Ratio (INR): A standardized calculation based on the PT that allows for consistent monitoring across different laboratories.

If a patient's INR is elevated—for example, an INR of $3.5$—it indicates that the blood is taking too long to clot, placing the patient at high risk for excessive bleeding. In this scenario, the nurse should anticipate holding the next dose of warfarin as per provider orders.

Blood Transfusion and Delegation

The administration of blood products, such as Packed Red Blood Cells (PRBCs), requires strict adherence to safety protocols to prevent a blood transfusion reaction.

Nursing management involves a clear division of tasks based on the scope of practice. This is a common area of testing regarding delegation:

• Registered Nurse (RN) Responsibilities: The RN is responsible for assessments and high-risk tasks. This includes auscultating lung sounds, monitoring urine output (to check for hemolysis), and taking vital signs during the first 15 minutes of a transfusion to detect a reaction.
• Unlicensed Assistive Personnel (UAP) Responsibilities: The UAP may assist with activities of daily living (ADLs) that do not require clinical judgment. For example, if a client has a high platelet count or is at risk for bleeding, the UAP can assist the client with gentle oral care, such as brushing teeth, to prevent gingival bleeding.

Delegation Rule of Thumb: If a task requires "Assessment," "Evaluation," or "Clinical Judgment," it cannot be delegated to a UAP. If it is a repetitive, non-invasive task like "Assisting with hygiene," it may be delegated.