Nursing Elites

1. What is the primary function of surfactant in the lungs?

• A. Reduce surface tension
• B. Enhance oxygen absorption
• C. Facilitate carbon dioxide release
• D. Increase lung volume

Correct answer: A

Rationale: The primary function of surfactant in the lungs is to reduce surface tension in the alveoli. This reduction in surface tension prevents lung collapse and allows for easier breathing. It is particularly crucial in premature infants to help with lung expansion. Choice B is incorrect because surfactant primarily affects surface tension, not oxygen absorption. Choice C is incorrect because surfactant's main role is not in facilitating carbon dioxide release. Choice D is incorrect because surfactant does not directly increase lung volume; its main role is in reducing surface tension.

2. When preparing a sterile field for a procedure, which action should the nurse take to maintain sterility?

• A. Place sterile items around the sterile field
• B. Keep hands below waist level to avoid contamination
• C. Open the sterile package away from the body
• D. Avoid reaching over the sterile field

Correct answer: D

Rationale: To maintain sterility when preparing a sterile field, it is essential to avoid reaching over the sterile field. This action can introduce contaminants from the nurse's clothing or unsterile areas, compromising the sterility of the field. Placing sterile items around the sterile field (choice A) is incorrect as it may increase the risk of contamination by extending the area where non-sterile items may come in contact. Keeping hands below waist level (choice B) is also incorrect as it does not prevent contamination effectively. Opening the sterile package away from the body (choice C) is incorrect since it exposes the contents to the nurse's body, which is not sterile.

3. What is the most common genetic cause of intellectual disability?

• A. Down syndrome
• B. Fragile X syndrome
• C. Prader-Willi syndrome
• D. Turner syndrome

Correct answer: B

Rationale: The correct answer is Fragile X syndrome because it is the most common inherited cause of intellectual disability, resulting from a mutation in the FMR1 gene. Down syndrome, Prader-Willi syndrome, and Turner syndrome are not the most common genetic causes of intellectual disability. Down syndrome is caused by the presence of an extra chromosome 21, Prader-Willi syndrome results from specific genetic abnormalities on chromosome 15, and Turner syndrome is characterized by the absence of part or all of one of the X chromosomes.

4. Which condition is characterized by a progressive loss of muscle strength due to an autoimmune attack on acetylcholine receptors?

• A. Myasthenia gravis
• B. Multiple sclerosis
• C. Amyotrophic lateral sclerosis
• D. Guillain-Barré syndrome

Correct answer: A

Rationale: The correct answer is A: Myasthenia gravis. Myasthenia gravis is characterized by muscle weakness caused by autoimmune attack on acetylcholine receptors at the neuromuscular junction. This results in impaired communication between nerves and muscles. Choice B, Multiple sclerosis, is a condition where the immune system attacks the protective myelin sheath covering the nerves in the central nervous system, leading to communication issues between the brain and the rest of the body. Choice C, Amyotrophic lateral sclerosis, is a progressive neurodegenerative disease affecting motor neurons in the brain and spinal cord, not involving acetylcholine receptors. Choice D, Guillain-Barré syndrome, is an acute condition where the immune system attacks the peripheral nerves, causing muscle weakness and paralysis, but it does not target acetylcholine receptors.

5. Which intervention is most appropriate when caring for a patient experiencing a tonic-clonic seizure?

• A. Restrain the patient to prevent injury
• B. Place a tongue depressor in the patient's mouth
• C. Turn the patient to the side to maintain an open airway
• D. Attempt to stop the seizure by holding the patient’s arms

Correct answer: C

Rationale: During a tonic-clonic seizure, the priority is to ensure patient safety by maintaining an open airway to prevent aspiration. Turning the patient to the side helps achieve this goal by allowing any fluids to drain out of the mouth, reducing the risk of choking or aspiration. Restraint can lead to injury, placing a tongue depressor can cause harm or obstruct the airway further, and attempting to stop the seizure by holding the patient's arms is ineffective and can also result in injury. Therefore, the most appropriate intervention is to turn the patient to the side.

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