The parent of a 1-year-old child with tetralogy of Fallot asks the nurse, "Why do my child's fingertips look like that?" On what understanding does the nurse base a response?
Clubbing occurs as a result of decreased cardiac output.
Clubbing occurs as a result of a left-to-right shunting of blood.
Clubbing occurs as a result of chronic hypoxia
Clubbing occurs as a result of untreated congestive heart failure.
The Correct Answer is C
C. Clubbing, characterized by bulbous enlargement of the fingertips and nail bed, is a result of chronic hypoxia in tetralogy of Fallot. In tetralogy of Fallot, there is a right-to-left shunting of blood due to the presence of a ventricular septal defect, overriding aorta, pulmonary stenosis, and right ventricular hypertrophy. This leads to reduced oxygenation of blood and chronic hypoxia, which can result in clubbing of the fingertips over time.

A This option is not the primary explanation for clubbing in tetralogy of Fallot. While decreased cardiac output may contribute to some manifestations of the condition, clubbing specifically results from chronic hypoxia rather than decreased cardiac output alone.
B Clubbing is not directly caused by a left-to-right shunting of blood. Instead, it is associated with chronic hypoxia, which can occur due to right-to-left shunting of blood in tetralogy of Fallot.
D Congestive heart failure may occur in individuals with tetralogy of Fallot but it is not the primary cause of clubbing. Clubbing in tetralogy of Fallot is primarily attributed to chronic hypoxia rather than heart failure alone.
Nursing Test Bank
Naxlex Comprehensive Predictor Exams
Related Questions
Correct Answer is ["B","C","D"]
Explanation
B. Wheezing is a common symptom of asthma exacerbation and can indicate airway obstruction. Wheezing may worsen during an asthma attack, suggesting deterioration in respiratory status.
C. Nasal flaring is a sign of increased respiratory effort and can occur during respiratory distress. In a child with asthma, nasal flaring may indicate worsening airway obstruction and increased work of breathing, suggesting deterioration in respiratory status.
D. Retraction of sternal muscles, also known as intercostal retractions, occurs when the muscles between the ribs are drawn inward during inspiration, indicating increased effort to breathe. Intercostal retractions are a sign of respiratory distress and can occur in children with asthma during exacerbations, particularly when airway obstruction is severe.
A. Warm extremities are not typically indicative of deterioration in respiratory status in a child with asthma. In fact, warm extremities may suggest adequate peripheral perfusion.
E. An oxygen saturation of 95% is within the normal range for most children and may not necessarily indicate deterioration in respiratory status. However, oxygen saturation should be interpreted in conjunction with other clinical signs and symptoms.
Correct Answer is D
Explanation
D. Pancreatic enzymes should not be mixed with acidic foods or liquids, as this can reduce their effectiveness. Instead, the enzymes should be sprinkled on soft, non-acidic foods or swallowed whole with a glass of water or juice.
A. Pancreatic enzymes are generally safe and well-tolerated when taken as prescribed but they can cause side effects in some individuals. Common side effects may include abdominal pain, diarrhea, constipation, nausea, and bloating.
B. Pancreatic enzymes help individuals with cystic fibrosis digest fat, as well as proteins and carbohydrates. In cystic fibrosis, the pancreas does not produce enough digestive enzymes, leading to malabsorption of nutrients, particularly fat. Supplemental pancreatic enzymes help compensate for this deficiency and improve nutrient absorption.
C. Pancreatic enzymes are typically taken with meals or snacks to aid in digestion. However, if the child is consuming a small meal or snack that contains minimal fat, the enzymes may not be necessary. It's important for the mother to follow the healthcare provider's instructions regarding when and how to administer the enzymes.
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