A nurse is caring for an infant whose screening test reveals a potential diagnosis of sickle cell disease. Which of the following tests should the nurse expect the provider to prescribe to distinguish whether the infant has sickle cell disease or sickle cell trait?
Transcranial doppler
Sickle solubility test
Complete blood count
Hemoglobin electrophoresis
The Correct Answer is D
A. Transcranial doppler: This test is used to assess blood flow in the brain and is often used for children with sickle cell disease to evaluate the risk of stroke. It is not used to distinguish between sickle cell disease and trait.
B. Sickle solubility test: This test is used to identify sickling in red blood cells, which can indicate sickle cell disease, but it does not differentiate between sickle cell disease and sickle cell trait.
C. Complete blood count (CBC): While a CBC can provide information about anemia and red blood cell characteristics, it cannot differentiate between sickle cell disease and sickle cell trait.
D. Hemoglobin electrophoresis: This test is the gold standard for diagnosing sickle cell disease and trait. It separates different types of hemoglobin based on their electrical charge, allowing for the identification of hemoglobin S (sickle hemoglobin), which distinguishes between sickle cell disease (homozygous) and sickle cell trait (heterozygous).
Nursing Test Bank
Naxlex Comprehensive Predictor Exams
Related Questions
Correct Answer is B
Explanation
A. Encourage the child to take deep breaths: While deep breaths may help improve oxygenation, the first action should be confirming that the monitoring device is correctly placed and providing accurate readings.
B. Ensure proper placement of the sensor probe: Incorrect placement of the sensor probe (e.g., on a fingernail or a cold extremity) can lead to inaccurate oxygen saturation readings. Ensuring proper placement is the priority to verify the accuracy of the reading.
C. Place the child in the Fowler's position: Fowler's position can help with breathing, but before making this change, the nurse should first verify that the pulse oximeter is working correctly.
D. Increase the oxygen flow rate: Increasing the oxygen flow rate may be necessary if the child’s oxygen saturation remains low, but the first step is to ensure the monitoring device is accurate.
Correct Answer is C
Explanation
A. Inhaled Glucocorticoid: Used for managing asthma or other respiratory conditions, not for cardiac function.
B. Beta Adrenergic Blocker: Reduces blood pressure and heart rate but is not the mechanism of Digoxin.
C. Cardiac Glycoside: Digoxin is used to improve myocardial contractility and slow the heart rate, which aligns with this classification.
D. Angiotensin Enzyme Inhibitor: Typically used to manage hypertension and heart failure by affecting the renin-angiotensin system.
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