A nurse is caring for an infant who has Tetralogy of Fallot and notes that the infant is easily fatigued when eating. Which defect is not present in this cardiac congenital malformation?
Overriding aorta
Pulmonary stenosis
Left ventricular hypertrophy
Ventricular septal defect
The Correct Answer is C
A. Overriding aorta: In Tetralogy of Fallot, the aorta is positioned over the ventricular septal defect (VSD), rather than solely over the left ventricle as it would be in a normal heart. This is called overriding aorta, which allows blood from both the right and left ventricles to enter the aorta.
B. Pulmonary stenosis: This is a critical component of Tetralogy of Fallot. Pulmonary stenosis refers to narrowing of the pulmonary valve or the area just below it, which restricts blood flow from the right ventricle to the pulmonary artery. This results in decreased blood flow to the lungs for oxygenation.
C. Left ventricular hypertrophy: This choice is not typically associated with Tetralogy of Fallot. Left ventricular hypertrophy refers to an enlargement or thickening of the muscular wall of the left ventricle of the heart. It is often seen in conditions where the left ventricle has to work harder to pump blood, such as in hypertension or aortic stenosis, but it is not a characteristic feature of Tetralogy of Fallot.
D. Ventricular septal defect: This defect is one of the four components of Tetralogy of Fallot. A ventricular septal defect (VSD) is a hole in the septum, the muscular wall that separates the left and right ventricles of the heart. In Tetralogy of Fallot, the VSD allows oxygen-poor blood from the right ventricle to flow directly into the left ventricle and out to the body.
Nursing Test Bank
Naxlex Comprehensive Predictor Exams
Related Questions
Correct Answer is C
Explanation
A. A room with a toddler who has pneumonia.
This option is not ideal because both RSV and pneumonia are respiratory infections that can spread to other patients. Placing these two patients together could increase the risk of cross-infection.
B. A private room with reverse isolation.
Reverse isolation is typically used to protect immunocompromised patients from acquiring infections from others. However, in the case of RSV, reverse isolation is not necessary because RSV primarily affects infants and young children who are generally not immunocompromised. Therefore, this option is not appropriate for an infant with RSV.
C. A private room with contact/droplet precautions.
This option is the most appropriate. RSV is primarily spread through respiratory droplets and direct contact with respiratory secretions. Placing the infant in a private room with contact/droplet precautions helps to minimize the risk of transmission to other patients. Healthcare workers and visitors entering the room should adhere to appropriate precautions, including wearing personal protective equipment (PPE) such as masks, gloves, and gowns.
D. A room with an infant who has croup.
Placing an infant with RSV in the same room as an infant with croup is not ideal because both conditions involve respiratory symptoms and may increase the risk of cross-infection.
Correct Answer is B
Explanation
To calculate the appropriate dose of Theophylline for the child weighing 4.69 kg:
Dose = Weight (kg) × Dose (mg/kg)
Dose = 4.69 kg × 4 mg/kg
Dose = 18.76 mg
So, the appropriate dose is approximately 18.7 mg.
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