A nurse is caring for an infant who has a congenital heart defect. Which of the following defects is associated with increased pulmonary blood flow?
Tricuspid atresia
Patent ductus arteriosus
Coarctation of the aorta
Tetralogy of Fallot
The Correct Answer is B
A. Tricuspid atresia typically leads to decreased pulmonary blood flow due to the absence of normal blood flow to the lungs.
B. Patent ductus arteriosus results in increased pulmonary blood flow because it allows blood to flow from the aorta to the pulmonary artery, increasing the volume of blood going to the lungs.
C. Coarctation of the aorta can cause decreased blood flow to the lower body, which may not directly relate to increased pulmonary blood flow.
D. Tetralogy of Fallot is characterized by decreased pulmonary blood flow due to right ventricular outflow obstruction, making it not associated with increased pulmonary blood flow.
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Correct Answer is B
Explanation
A. Administering IV fluids may be necessary but is not the first priority in managing a suspected airway emergency.
B. Placing the child on droplet precautions is the first action to take to prevent the spread of infection and protect healthcare workers, given the suspected diagnosis of epiglottitis.
C. Initiating IV antibiotics is essential but should follow ensuring that appropriate precautions and assessments are in place.
D. While obtaining an x-ray can confirm the diagnosis, the child's safety and airway management must be prioritized first to avoid potential respiratory distress.
Correct Answer is B
Explanation
A. This option is incorrect as it does not describe the expected blood pressure difference in coarctation of the aorta.
B. Coarctation of the aorta typically presents with higher blood pressure in the upper body (arms) and lower blood pressure in the lower body (legs) due to the obstruction of blood flow distal to the aortic arch.
C. This option is incorrect because while coarctation can lead to decreased perfusion in the lower extremities, it does not typically result in decreased blood pressure in both the arms and legs simultaneously.
D. While increased blood pressure may occur in the arms, the legs would not typically show increased blood pressure in cases of coarctation.