Which describes the pathology of immune thrombocytopenia?
Diffuse fibrin deposition in the microvasculature
Deficiency in the production rate of globin chains
An excessive destruction of platelets
Bone marrow failure in which all elements are suppressed
The Correct Answer is C
The correct answer is c. An excessive destruction of platelets.
Choice A: Diffuse fibrin deposition in the microvasculature
Diffuse fibrin deposition in the microvasculature is not characteristic of immune thrombocytopenia (ITP). This description is more aligned with disseminated intravascular coagulation (DIC), a condition where widespread clotting occurs within the blood vessels, leading to multiple organ damage.
Choice B: Deficiency in the production rate of globin chains
A deficiency in the production rate of globin chains is associated with thalassemia, a genetic blood disorder that affects the production of hemoglobin. This is not related to the pathology of immune thrombocytopenia.
Choice C: An excessive destruction of platelets
An excessive destruction of platelets is the hallmark of immune thrombocytopenia (ITP). In ITP, the immune system mistakenly targets and destroys platelets, which are essential for blood clotting. This leads to a low platelet count and an increased risk of bleeding.
Choice D: Bone marrow failure in which all elements are suppressed
Bone marrow failure in which all elements are suppressed is characteristic of aplastic anemia, a condition where the bone marrow fails to produce sufficient blood cells. This is not related to immune thrombocytopenia.
Nursing Test Bank
Naxlex Comprehensive Predictor Exams
Related Questions
Correct Answer is D
Explanation
Choice A reason:
Marbles are not a safe play activity for a 3-year-old in a spica cast. Marbles are small and can pose a choking hazard. Additionally, playing with marbles requires fine motor skills and movement that may be restricted by the cast.
Choice B Reason:
Watching a movie is a safe activity but does not provide developmental benefits. While it can keep the child entertained, it does not engage the child in active play or promote cognitive and motor development.
Choice C Reason:
A game of checkers may be too advanced for a 3-year-old. It requires understanding of rules and strategic thinking, which may be beyond the developmental stage of a child this age. Additionally, it may not be engaging enough to hold the child’s attention.
Choice D Reason:
Playing with a toy telephone is an appropriate activity for a 3-year-old in a spica cast. It is safe and can be done while the child is in a stationary position. This activity encourages imaginative play and can help with language development and social skills.
Correct Answer is ["20"]
Explanation
Calculation Steps
Step 1: Determine the child’s weight in kg.
- Weight = 23 kg
Step 2: Determine the time period in hours.
- Time = 60 minutes = 1 hour
Step 3: Calculate the bolus rate in mL/kg/hour.
- Bolus rate (mL/kg/hour) = Total volume (mL) ÷ (Weight × Time)
Step 4: Assume a standard bolus volume for severe dehydration, which is typically 20 mL/kg.
- Total volume = 20 mL/kg × 23 kg = 460 mL
Step 5: Calculate the bolus rate.
- Bolus rate (mL/kg/hour) = 460 mL ÷ (23 kg × 1 hour) = 20 mL/kg/hour
Result
The bolus rate to be given to the severely dehydrated child is 20 mL/kg/hour.
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