The nurse reviews laboratory results for a client with disseminated intravascular coagulation who is being monitored for complications related to abnormal clotting.
Which findings would most suggest the development of organ dysfunction secondary to thrombotic microangiopathy?
Decreased respiratory rate and normal oxygen saturation.
Elevated blood urea nitrogen (BUN) and serum creatinine.
Decreased white blood cell count and increased bilirubin.
Elevated liver transaminases and normal coagulation profiles.
The Correct Answer is B
Disseminated intravascular coagulation involves systemic activation of coagulation, leading to microthrombi formation. Assessing for organ dysfunction requires understanding how thrombotic microangiopathy causes ischemia in high-vascularity organs, specifically focusing on renal and hepatic biomarkers and physiological changes in perfusion.
Choice A rationale
Thrombotic microangiopathy in the lungs would typically cause increased respiratory rates and decreased oxygen saturation due to impaired gas exchange. Decreased rates and normal saturation do not indicate the ischemic damage associated with microvascular clotting.
Choice B rationale
The kidneys are highly susceptible to microthrombi. Elevated BUN (normal 10 to 20 mg/dL) and creatinine (normal 0.6 to 1.2 mg/dL) indicate acute kidney injury caused by fibrin deposition and subsequent ischemia in the glomerular capillaries.
Choice C rationale
While bilirubin might rise due to hemolysis, white blood cell counts are not a primary indicator of thrombotic organ dysfunction. Bilirubin increases are more common in hepatic failure or red blood cell fragmentation during DIC.
Choice D rationale
DIC typically presents with abnormal coagulation profiles, including prolonged PT and PTT and low fibrinogen. Normal profiles would contradict the diagnosis of DIC, even if transaminases were elevated due to localized hepatic microvascular occlusion.
Nursing Test Bank
Naxlex Comprehensive Predictor Exams
Related Questions
Correct Answer is ["A","B","C","E"]
Explanation
End-of-life care focuses on communication, psychological support, and advocacy. Knowledge of therapeutic communication and the stages of grief is required to provide holistic care that empowers the family while reducing the uncertainty and helplessness often associated with terminal illness.
Choice A rationale
Clarifying rationale reduces anxiety by providing the family with an understanding of how pain management promotes comfort. Knowledge of pharmacokinetics helps families accept that scheduled dosing prevents breakthrough pain, reducing their stress regarding the dying process.
Choice B rationale
Using the teach-back method ensures that the family accurately understands the complex medical information provided. This reduces frustration caused by misunderstandings or the cognitive impairment often associated with high stress and emotional exhaustion during terminal care.
Choice C rationale
Transparency regarding delays prevents feelings of neglect or abandonment. Explaining the medical reasoning behind schedule changes builds trust and ensures the family feels respected and involved in the care planning process during a vulnerable time.
Choice D rationale
Limiting interactions can make a family feel isolated or ignored during a crisis. While privacy is important, the nurse must remain available and present, as social isolation often increases the stress and fear associated with death.
Choice E rationale
Providing unlimited access to staff addresses the unpredictability of terminal illness and the family's need for reassurance. This support system minimizes frustration by ensuring that questions and physiological changes are addressed promptly by the healthcare team.
Correct Answer is ["A","D","E","F"]
Explanation
Diagnosing acute pancreatitis involves analyzing inflammatory markers, pancreatic enzymes, and metabolic changes. Knowledge of systemic inflammatory response syndrome and the endocrine/exocrine functions of the pancreas is necessary to identify labs indicating tissue necrosis, inflammation, and secondary metabolic disturbances.
Choice A rationale
Pancreatitis triggers a systemic inflammatory response, leading to leukocytosis. An elevated white blood cell count (normal range 5,000 to 10,000 cells/mm) is a common finding indicating active inflammation or secondary infection within the pancreatic tissue.
Choice B rationale
In acute pancreatitis, hematocrit often increases rather than decreases due to hemoconcentration. Fluid shifts from the intravascular space into the peritoneal cavity (third spacing) cause a relative rise in hematocrit, indicating significant volume depletion.
Choice C rationale
Serum amylase (normal range 30 to 110 U/L) typically increases rapidly within hours of symptom onset in pancreatitis. A decreased level is not supportive of this diagnosis; levels usually rise three times the upper limit.
Choice D rationale
Serum lipase (normal range 0 to 160 U/L) is a highly specific marker for pancreatic damage. In acute pancreatitis, lipase levels rise significantly and remain elevated longer than amylase, making it a primary diagnostic indicator.
Choice E rationale
Hypertriglyceridemia is both a cause and a result of acute pancreatitis. Serum triglycerides exceeding 1,000 mg/dL can precipitate an attack. Elevated levels support the diagnosis and help identify the potential underlying metabolic etiology.
Choice F rationale
The pancreas produces insulin via islets of Langerhans. Inflammation impairs endocrine function, leading to hyperglycemia (normal fasting glucose 70 to 99 mg/dL). Elevated glucose is a common secondary finding in acute pancreatic injury.
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