A nurse is reviewing the medical record of a toddler who has moderate dehydration. Which of the following findings should the nurse expect?
Decreased hematocrit
Increased respiratory rate
Decreased heart rate
Increased platelet count
The Correct Answer is B
A. Decreased hematocrit: Hematocrit usually increases in dehydration due to the concentration of red blood cells in a smaller volume of plasma.
B. Increased respiratory rate: Dehydration can lead to tachypnea (increased respiratory rate) as the body attempts to compensate for the decreased blood volume and maintain oxygen delivery.
C. Decreased heart rate: Dehydration typically causes tachycardia (increased heart rate) as the body tries to maintain adequate blood circulation and pressure.
D. Increased platelet count: Dehydration does not typically affect platelet count significantly, though it may concentrate blood components, including platelets, making them appear elevated on a lab test.
Nursing Test Bank
Naxlex Comprehensive Predictor Exams
Related Questions
Correct Answer is D
Explanation
A. Place a warm, moist heat pack on the cast: Incorrect. Moisture can damage the integrity of a plaster cast, and heat can increase swelling.
B. Position the casted arm in a dependent position: Incorrect. Keeping the arm elevated helps reduce swelling and pain.
C. Move the casted arm with a firm grasp: Incorrect. A firm grasp can cause further injury or discomfort. It’s important to handle the casted limb gently.
D. Administer diphenhydramine to relieve itching: Correct. Itching is common under a new cast, and diphenhydramine can help manage this symptom without risking damage to the cast.
Correct Answer is A
Explanation
A. Drink eight glasses of fluid daily: Maintaining hydration is crucial in preventing sickle cell crises as it helps to keep the blood less viscous, reducing the risk of vaso-occlusion.
B. Maintain an updated haemophilus influenza type B immunization: While staying up to date on vaccinations is important, it is not specific to preventing sickle cell crises.
C. Assume postural drainage positions every 6 hr: This is more relevant for respiratory conditions like cystic fibrosis, not sickle cell anemia.
D. Avoid playground activities at school: Regular activity is beneficial, but avoiding extreme physical exertion is more relevant. Normal playground activities can usually be continued with proper hydration and caution.
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