The nurse knows which congenital cardiac defect is characterized by a mixing of well-oxygenated blood with poorly oxygenated blood.
Hypoplastic heart syndrome
Atrioventricular canal defect
Tetralogy of Fallot
Coarctation of the aorta
The Correct Answer is B
A. Hypoplastic heart syndrome: Characterized by underdevelopment of the left side of the heart, not mixing of blood.
B. Atrioventricular canal defect: An atrioventricular canal defect allows oxygenated and deoxygenated blood to mix due to the presence of a common atrioventricular valve and defects in the atrial and ventricular septa. This defect results in a mixture of oxygenated and deoxygenated blood, which can cause varying levels of oxygenation in the blood delivered to the body.
C. Tetralogy of Fallot: Involves a ventricular septal defect leading to right-to-left shunting, but not a direct mixing of oxygenated and deoxygenated blood.
D. Coarctation of the aorta: Involves narrowing of the aorta, not mixing of oxygenated and deoxygenated blood.
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Naxlex Comprehensive Predictor Exams
Related Questions
Correct Answer is B
Explanation
A. Sunken fontanels: Sunken fontanels are typically associated with dehydration rather than abusive head trauma.
B. Retinal haemorrhage: Retinal haemorrhages are a key indicator of abusive head trauma, such as shaken baby syndrome. They are caused by the shearing forces of rapid acceleration and deceleration.
C. Laceration to forearm: While concerning, a laceration to the forearm is not specific to abusive head trauma and could result from various types of trauma.
D. Large bruises on the body: While large bruises might indicate physical abuse, they are not specific to head trauma and do not point as directly to abusive head trauma as retinal haemorrhages do.
Correct Answer is A
Explanation
A. This position prevents stomach juice from going into the lungs. Elevating the head helps prevent reflux of stomach contents into the trachea and lungs, which can lead to aspiration pneumonia.
B. This position allows food to be easily digested by the stomach. The position primarily focuses on respiratory protection, not digestion.
C. This position helps my baby breathe better by opening the lungs. While elevation can aid breathing, it's primarily to prevent aspiration rather than improving respiratory function.
D. This position keeps pressure off the stomach. It's not primarily about relieving pressure but rather preventing aspiration.
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