The nurse is caring for an older adult who is confused and restless. The nurse reviews the patient's history and recent complete blood count (CBC). Which finding may best explain the patient's confusion and restlessness?
Decreased hematocrit and hemoglobin.
Increased erythrocyte count
Normochromic red blood cells
Decreased thrombocytes.
The Correct Answer is A
Choice A reason: Decreased hematocrit and hemoglobin indicate anemia, which is a condition where the blood does not carry enough oxygen to the tissues. This can cause symptoms such as confusion, restlessness, fatigue, and weakness in older adults.
Choice B reason: Increased erythrocyte count, or polycythemia, is a condition where the blood has too many red blood cells. This can cause the blood to become thick and viscous, which can impair blood flow and oxygen delivery. However, this is not the best explanation for the patient's confusion and restlessness, as polycythemia usually causes symptoms such as headache, dizziness, itching, and flushing.
Choice C reason: Normochromic red blood cells are red blood cells that have a normal color and hemoglobin content. This is not a finding that would explain the patient's confusion and restlessness, as it indicates a normal red blood cell function.
Choice D reason: Decreased thrombocytes, or platelets, are blood cells that help with clotting. This is a finding that would increase the risk of bleeding, but not the risk of confusion and restlessness. Decreased thrombocytes can cause symptoms such as bruising, bleeding gums, nosebleeds, and petechiae.
Nursing Test Bank
Naxlex Comprehensive Predictor Exams
Related Questions
Correct Answer is C
Explanation
Choice A reason: This is incorrect. Polyphasia and nystagmus are not signs of neurological deterioration, but rather of speech and eye disorders. Polyphasia is the excessive use of words or speech, and nystagmus is the involuntary movement of the eyes.
Choice B reason: This is incorrect. Increased respiratory rate and depth are not signs of neurological deterioration, but rather of respiratory distress or hyperventilation. They may indicate a problem with the lungs or the blood gases, not the brain.
Choice C reason: This is correct. Decreased level of consciousness and difficulty arousing upon stimulation are signs of neurological deterioration, as they indicate a decrease in the brain's ability to function and respond to stimuli. They may be caused by increased intracranial pressure, bleeding, swelling, or infection in the brain.
Choice D reason: This is incorrect. Decreased pulse pressure and pupils slowly reactive and round to light are not signs of neurological deterioration, but rather of cardiovascular or autonomic dysfunction. They may indicate a problem with the heart or the blood pressure, not the brain.
Correct Answer is A
Explanation
Choice A reason: This is correct. Folic acid deficiency causes macrocytic, normochromic anemia, which means that the red blood cells are larger than normal, but have normal color and hemoglobin content. Folic acid is a vitamin that is needed for the synthesis of DNA and the maturation of red blood cells.
Choice B reason: This is incorrect. Microcytic, hypochromic anemia means that the red blood cells are smaller than normal and have less color and hemoglobin content. This type of anemia is caused by iron deficiency, not folic acid deficiency.
Choice C reason: This is incorrect. Normocytic, normochromic anemia means that the red blood cells are normal in size, color, and hemoglobin content, but there are fewer of them. This type of anemia is caused by blood loss, hemolysis, or bone marrow failure, not folic acid deficiency.
Choice D reason: This is incorrect. Microcytic, normochromic anemia means that the red blood cells are smaller than normal, but have normal color and hemoglobin content. This type of anemia is rare and is caused by disorders of red blood cell production, such as thalassemia or sideroblastic anemia, not folic acid deficiency.
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