Oncology Certified Nurse (OCN) Nursing Practice Test

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What tests are essential for diagnosing DIC?

  1. Blood glucose and cholesterol tests

  2. Platelet count, Fibrinogen level, D Dimer, FDP Titer

  3. Complete blood count and metabolic panel

  4. Liver function tests and renal function tests

The correct answer is: Platelet count, Fibrinogen level, D Dimer, FDP Titer

The essential tests for diagnosing Disseminated Intravascular Coagulation (DIC) focus on assessing the hemostatic system and identifying abnormalities in coagulation and platelet levels. The correct answer includes the platelet count, fibrinogen level, D-dimer, and fibrin degradation products (FDP) titer. In DIC, there is typically a significant drop in platelet count due to increased consumption as the coagulation process is activated throughout the vascular system. Monitoring the platelet count helps confirm the diagnosis of DIC. Additionally, fibrinogen levels are crucial because they may be low in DIC due to its consumption during the coagulation cascade. Elevated levels of D-dimer indicate increased fibrin breakdown, which is characteristic of DIC since it involves the formation and subsequent breakdown of blood clots. The measurement of FDP can further support the diagnosis by indicating excessive fibrinolytic activity. Options that focus on blood glucose, cholesterol, or general blood panels do not target the specific hemostatic functions and abnormalities seen in DIC and, therefore, are not essential for its diagnosis. Liver and renal function tests are more related to determining organ function rather than specifically diagnosing DIC. Understanding these specific tests helps clarify the coagulation pathway disturbances that