A nurse is collecting data from an infant a large patent ductus arteriosus. Which of the following is clinical manifestations should the nurse expect?
Machine like murmur
Chronic hypoxemia
Cyanosis with crying
Weak pulse
The Correct Answer is A
A. Machine-like murmur.
This option is correct. A characteristic clinical manifestation of a large patent ductus arteriosus is a continuous "machine-like" murmur heard on auscultation. This murmur is typically heard best at the upper left sternal border and may radiate to the back.
B. Chronic hypoxemia.
Chronic hypoxemia is not typically a primary manifestation of a large PDA. While PDA can lead to increased pulmonary blood flow and potentially contribute to pulmonary congestion, chronic hypoxemia may not be a prominent feature unless complications such as heart failure develop.
C. Cyanosis with crying.
Cyanosis with crying is more commonly associated with cyanotic congenital heart defects such as tetralogy of Fallot. While PDA can contribute to cyanosis in certain circumstances, it is not typically a consistent clinical manifestation.
D. Weak pulse.
A weak pulse is not typically associated specifically with a large PDA. Infants with PDA may have bounding pulses due to increased blood flow through the ductus arteriosus.
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Naxlex Comprehensive Predictor Exams
Related Questions
Correct Answer is C
Explanation
A. Respiratory
Kawasaki disease primarily affects the cardiovascular system rather than the respiratory system. While respiratory symptoms such as cough or congestion may occur in some cases, they are not the primary focus of the disease.
B. Gastrointestinal
Although gastrointestinal symptoms such as abdominal pain, vomiting, or diarrhea can occur in Kawasaki disease, they are not the primary system affected. Gastrointestinal symptoms are considered part of the systemic manifestations of the disease but do not define its primary pathology.
C. Cardiovascular
This is the correct answer. Kawasaki disease primarily affects the cardiovascular system. It is characterized by inflammation of the blood vessels, particularly the medium-sized arteries, including the coronary arteries. Coronary artery involvement can lead to coronary artery aneurysms and other cardiovascular complications, making the cardiovascular system the primary focus of the disease.
D. Integumentary
The integumentary system (skin) is not primarily affected by Kawasaki disease. While changes in the skin, such as a rash, may occur as part of the systemic manifestations of the disease, they are not the primary focus of Kawasaki disease.
Correct Answer is ["5.4"]
Explanation
Convert the child's weight from pounds (lb) to kilograms (kg):
20 lb × (1 kg / 2.20462 lb) ≈ 9.07 kg
Calculate the total daily dose of cefazolin:
Total daily dose = 30 mg/kg/day × 9.07 kg = 272.1 mg/day
Divide the total daily dose into two equal doses:
Each dose = 272.1 mg / 2 ≈ 136.05 mg
Determine the dose per ml using the available oral suspension concentration:
125 mg/5 ml = 25 mg/ml
Calculate the volume of oral suspension needed for each dose:
Volume per dose = Dose per dose / Concentration per ml
≈ 136.05 mg / 25 mg/ml
≈ 5.44 ml
So, the child should receive approximately 5.44 ml per dose of cefazolin oral suspension.
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