A 4-year-old child who weighs 44 lbs is diagnosed with Streptococcal Pharyngitis and is prescribed Penicillin. 40 mg/kg/day, twice a day for 10 days. The suspension is written as 400 mg/5 ml. Calculate one dose in mg.
400 mg.
800 mg.
1200 mg.
1600 mg.
The Correct Answer is B
Choice A rationale:
The dosage prescribed for the child is 40 mg/kg/day, twice a day for 10 days. The child weighs 44 lbs, which is approximately 20 kg (1 lb = 0.45 kg). Therefore, the total daily dosage would be 40 mg/kg * 20 kg = 800 mg. This is split into two doses, so each dose would be 400 mg, not 400 mg per 5 ml as in the suspension.
Choice B rationale:
As explained above, the total daily dosage is 800 mg, split into two doses of 400 mg each. The suspension is written as 400 mg/5 ml, so one dose would be 400 mg.
Choice C rationale:
This choice is incorrect because it does not accurately calculate the dosage based on the child's weight and the prescribed dosage regimen.
Choice D rationale:
This choice is incorrect because it suggests a higher dose than what is prescribed. The correct dosage, based on the child's weight and prescription, is 800 mg per day, split into two doses of 400 mg each.
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Naxlex Comprehensive Predictor Exams
Related Questions
Correct Answer is D
Explanation
Choice A rationale:
The child's fever in Kawasaki disease is typically unresponsive to antibiotics. The disease primarily affects blood vessels and can lead to the development of coronary artery aneurysms. Antibiotics are not the mainstay of treatment for Kawasaki disease.
Choice B rationale:
Kawasaki disease does not primarily involve the joints. It is a systemic vasculitis that affects medium-sized arteries throughout the body, including the coronary arteries. Joint involvement is not a characteristic feature of this condition.
Choice C rationale:
Aspirin is actually a crucial part of the treatment for Kawasaki disease. High-dose aspirin therapy (80-100 mg/kg/day) is administered until the child is afebrile, then the dose is reduced and continued for several weeks to prevent blood clots and inflammation in the coronary arteries.
Choice D rationale:
This is the correct answer. The therapeutic management of Kawasaki disease includes the administration of intravenous immunoglobulin (IVIG) and aspirin. IVIG helps reduce inflammation and prevent coronary artery abnormalities, while high-dose aspirin is used for its anti-inflammatory and antiplatelet effects. This combination of treatments has been shown to be effective in reducing the risk of coronary artery complications associated with Kawasaki disease.
Correct Answer is A
Explanation
Choice A rationale:
Asthma. Rationale: A chronic, nonproductive cough and diffuse wheezing during the expiratory phase of respiration are classic symptoms of asthma. Asthma is a chronic inflammatory condition of the airways characterized by bronchoconstriction, leading to symptoms such as wheezing, coughing, and shortness of breath. These symptoms often worsen during the expiratory phase of respiration, leading to the characteristic expiratory wheezing.
Choice B rationale:
Pneumonia. Rationale: Pneumonia is characterized by inflammation of the lung tissue and is often associated with productive cough, fever, chest pain, and sometimes wheezing. However, diffuse wheezing during the expiratory phase without significant productive cough is not a typical presentation of pneumonia.
Choice C rationale:
Bronchiolitis. Rationale: Bronchiolitis, caused by viruses such as RSV, commonly affects infants and young children. It presents with symptoms such as cough, wheezing, and respiratory distress. However, bronchiolitis typically involves lower airway inflammation and is often associated with viral upper respiratory symptoms. The presented case, with a chronic, nonproductive cough and diffuse wheezing during the expiratory phase, is more indicative of asthma.
Choice D rationale:
Foreign body in the trachea. Rationale: A foreign body in the trachea can cause acute respiratory distress and coughing. While it can lead to wheezing, the chronic nature of the symptoms described in the scenario (chronic, nonproductive cough and diffuse wheezing during the expiratory phase) is not consistent with a foreign body in the trachea.
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