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 A
Explanation
A. "I will keep my baby in an upright position after feedings."
Gastroesophageal reflux (GER) is a condition where the stomach contents flow back into the esophagus, which can cause spitting up or regurgitation in infants. Keeping the baby in an upright position after feedings can help reduce the likelihood of reflux episodes. By holding the baby in an upright position for about 30 minutes after feeding, gravity can aid in keeping the stomach contents from flowing back into the esophagus.
The other statements are incorrect or do not address the management of gastroesophageal reflux:
B. "My baby's formula can be thickened with oatmeal." - Thickening formula with oatmeal is not a standard recommendation for managing GER in infants. In some cases, thickening formulas may be recommended, but it should be done under the guidance of a healthcare provider.
C. "I should position my baby side-lying during sleep." A side-lying position is not recommended for sleep in infants, as it increases the risk of sudden infant death syndrome (SIDS). The safe sleep position for infants is on their back.
D. "I will have to feed my baby formula rather than breast milk." - The type of feeding (formula or breast milk) does not directly impact the occurrence of gastroesophageal reflux. Both breast milk and formula can cause reflux in some infants. It is essential to discuss feeding options with a healthcare provider to determine the best approach for the individual infant's needs.
Correct Answer is B
Explanation
During a sickle cell crisis, the child experiences severe pain due to the sickled red blood cells blocking blood flow in the vessels, leading to tissue ischemia and infarction. Pain is the hallmark symptom of sickle cell crisis and can occur in various parts of the body, such as the abdomen, chest, back, joints, and extremities.
A. Constipation is not a common symptom of sickle cell crisis. It may be associated with other conditions but is not directly related to sickle cell crisis.
C. High fever is not a typical finding in sickle cell crisis. Fever may occur due to infections, which individuals with sickle cell disease are at increased risk of developing, but it is not a direct symptom of the crisis itself.
D. Bradycardia (slow heart rate) is not commonly associated with sickle cell crisis. Tachycardia (rapid heart rate) may occur in response to pain, but bradycardia is not a typical finding.
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