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?
Coarctation of the aorta
Patent ductus arteriosus
Tetralogy of Fallot
Tricuspid atresia
The Correct Answer is B
A patent ductus arteriosus (PDA) is a congenital heart defect associated with increased pulmonary blood flow. In normal fetal circulation, the ductus arteriosus allows blood to bypass the lungs since the baby receives oxygen from the mother's placenta. After birth, the ductus arteriosus should close, redirecting blood flow to the lungs for oxygenation. However, in some infants with PDA, the ductus arteriosus remains open, causing an abnormal connection between the aorta and the pulmonary artery. As a result, oxygenated blood from the aorta flows back into the pulmonary artery, increasing the workload on the lungs.
The other options are as follows:
A. Coarctation of the aorta - Coarctation of the aorta is a narrowing of the aorta, which obstructs blood flow and leads to increased blood pressure in the upper body and reduced blood flow to the lower body.
C. Tetralogy of Fallot - Tetralogy of Fallot is a combination of four heart defects that results in decreased pulmonary blood flow due to a ventricular septal defect (VSD), overriding aorta, pulmonary stenosis, and right ventricular hypertrophy.
D. Tricuspid atresia - Tricuspid atresia is a congenital heart defect where the tricuspid valve does not develop correctly, resulting in an absent or abnormal tricuspid valve. This defect prevents blood flow from the right atrium to the right ventricle and, therefore, reduces pulmonary blood flow.
Nursing Test Bank
Naxlex Comprehensive Predictor Exams
Related Questions
Correct Answer is D
Explanation
In cystic fibrosis, the pancreas does not secrete enough digestive enzymes, leading to malabsorption of nutrients, especially fats. To help with digestion, pancreatic enzymes are prescribed to be taken with meals and snacks. These enzymes should be given just before or with each meal or snack to aid in the breakdown and absorption of nutrients.
Correct Answer is A
Explanation
For a child with von Willebrand disease experiencing a nosebleed, the nurse should instruct the parent to have the child sit with their head tilted forward slightly (not backward) to prevent blood from flowing down the throat. Applying direct pressure to the nostrils with fingers or using a clean cloth for about 10 minutes will help stop the bleeding.
Option B (applying ice at the base of the nose) is not recommended because ice can cause vasoconstriction, potentially prolonging bleeding in individuals with bleeding disorders.
Option C (placing the child in a supine position with a pillow under the back) is also not recommended, as this can lead to blood flowing down the throat, increasing the risk of aspiration.
Option D (placing the child in a sitting position with her head tilted back) should be avoided as it can lead to blood flowing into the throat and potentially being swallowed or aspirated. This position is generally discouraged for nosebleeds.
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