A client is seen in the emergency department with severe pain related to a sickle cell crisis. What does the nurse understand is occurring with this client?
The client has a decreased tolerance of pain related to the chronic nature of the illness
Overhydration enlarges the red blood cells
Bone marrow decreases the erythrocyte production causing decrease in hypoxia
Vascular occlusion in small vessels decreasing blood and oxygen to the tissues
The Correct Answer is D
Reasoning:
Choice A reason: Decreased pain tolerance may occur in chronic conditions, but it is not the primary mechanism of pain in a sickle cell crisis. Pain results from vaso-occlusion by sickled red blood cells, causing tissue ischemia, not a psychological or tolerance issue, making this explanation incorrect.
Choice B reason: Overhydration does not enlarge red blood cells or cause sickle cell crises. Dehydration can trigger sickling by increasing blood viscosity, but overhydration dilutes plasma, potentially reducing sickling. Pain in crises stems from vaso-occlusion, not cell size changes due to fluid status.
Choice C reason: Bone marrow in sickle cell anemia increases, not decreases, erythrocyte production to compensate for chronic hemolysis. Hypoxia results from vaso-occlusion, not reduced production, as sickled cells block vessels, impairing oxygen delivery, making this an incorrect explanation for crisis-related pain.
Choice D reason: Vascular occlusion in small vessels by sickled red blood cells is the primary mechanism of sickle cell crisis pain. Sickled cells obstruct microvasculature, reducing blood flow and oxygen delivery, causing tissue ischemia and severe pain, accurately explaining the client’s symptoms in the emergency department.
Nursing Test Bank
Naxlex Comprehensive Predictor Exams
Related Questions
Correct Answer is B
Explanation
Reasoning:
Choice A reason: Palpating lymph nodes and tonsils is relevant for assessing infections or malignancies but is not a primary intervention for thrombocytopenia. Corticosteroids treat thrombocytopenia by suppressing autoimmune platelet destruction, and the focus is on bleeding prevention, not lymphoid assessment, which is secondary to managing low platelet counts.
Choice B reason: Eliminating aspirin and NSAIDs is critical in thrombocytopenia, as these drugs inhibit platelet function, increasing bleeding risk in patients with low platelet counts. Corticosteroids improve platelet production, but concurrent use of antiplatelet drugs could exacerbate bleeding tendencies, making their elimination a primary nursing intervention.
Choice C reason: Gradually tapering corticosteroids is important to prevent adrenal suppression but is not the primary intervention during initial therapy for thrombocytopenia. The immediate focus is on preventing bleeding complications due to low platelets, with tapering being a later consideration once platelet counts stabilize.
Choice D reason: Examining extremities for redness may detect infection or inflammation but is not the primary intervention for thrombocytopenia. Bleeding risk from low platelets is the main concern, and while redness could indicate complications, eliminating drugs that impair platelet function is more critical to prevent hemorrhage.
Correct Answer is C
Explanation
Reasoning:
Choice A reason: Bradycardia, or slow heart rate, is not typically associated with diabetes insipidus. The condition causes dehydration due to excessive water loss, leading to hypovolemia, which typically increases heart rate (tachycardia) to compensate for reduced blood volume, not slowing it, making bradycardia an unlikely sign.
Choice B reason: Oliguria, or low urine output, is not a feature of diabetes insipidus. The condition results from ADH deficiency, causing the kidneys to produce large volumes of dilute urine (polyuria). Oliguria is more common in conditions like acute kidney injury or dehydration from other causes.
Choice C reason: Hypotension is a clinical sign of diabetes insipidus due to significant water loss from polyuria, leading to hypovolemia. Reduced blood volume decreases blood pressure, as the cardiovascular system struggles to maintain adequate perfusion, making hypotension a common finding in severe or untreated cases.
Choice D reason: Hypertension is not typically associated with diabetes insipidus. The condition leads to dehydration and hypovolemia, which lower blood pressure. Hypertension might occur in conditions like SIADH, where water retention increases blood volume, but this is opposite to the pathophysiology of diabetes insipidus.
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