The nurse is performing an assessment on a child and notes the presence of Koplik’s spots. In which communicable disease are Koplik’s spots present?
Rubella
Measles (rubeola)
Chickenpox (varicella)
Exanthema subitum (roseola)
The Correct Answer is B
Measles (rubeola) is a communicable disease that is characterized by Koplik’s spots, which are clustered, white lesions on the buccal mucosa opposite the lower molars. They appear two to three days before the measles rash and are pathognomonic for measles.
Choice A is wrong because rubella is a different viral infection that causes a mild rash and fever, but does not have Koplik’s spots.
Choice C is wrong because chickenpox (varicella) is caused by the varicella-zoster virus and produces fluid-filled blisters on the skin, not white spots in the mouth.
Choice D is wrong because exanthema subitum (roseola) is caused by the human herpesvirus 6 or 7 and causes a high fever followed by a pink rash on the trunk and neck, but no oral lesions.
Nursing Test Bank
Naxlex Comprehensive Predictor Exams
Related Questions
Correct Answer is D
Explanation
This test measures the amount of chloride in the sweat, which is abnormally high in people with cystic fibrosis (CF). CF is an inherited disorder that affects the cells that produce mucus, sweat, and digestive juices.
Choice A is wrong because bronchoscopy is a procedure that allows the doctor to examine the airways and lungs, but it is not essential for diagnosing CF.
Choice B is wrong because serum calcium is a blood test that measures the level of calcium in the blood, which is not related to CF.
Choice C is wrong because urine creatinine is a test that measures the amount of creatinine in the urine, which reflects the kidney function, but it is not relevant to CF.
Normal ranges for sweat chloride test are:
- Less than 40 millimoles per liter (mmol/L) for children and adults
- Less than 30 mmol/L for infants younger than 6 months
A sweat chloride level of more than 60 mmol/L is considered positive for CF.
Correct Answer is C
Explanation
The patient is showing signs of magnesium toxicity, such as respiratory depression, hyporeflexia, and flushing.
Magnesium sulfate is a high-alert medication that can cause serious adverse effects if not monitored closely.
The nurse should stop the infusion immediately and notify the provider.
Choice A is wrong because calling for a stat magnesium sulfate level will not address the immediate problem of toxicity.
The nurse should act quickly to prevent further complications.
Choice B is wrong because administering oxygen will not reverse the effects of magnesium toxicity.
Oxygen may be helpful for respiratory distress, but it will not correct the underlying cause.
Choice D is wrong because hydralazine is an antihypertensive medication that lowers blood pressure.
The patient’s blood pressure is already within the normal range for a pregnant woman with preeclampsia (140-160/90-110 mm Hg).
Hydralazine may cause hypotension and fetal distress.
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