Nursing Elites

1. At what age is binocularity, the ability to fixate on one visual field with both eyes simultaneously, typically achieved?

• A. 1 month
• B. 3 to 4 months
• C. 6 to 8 months
• D. 12 months

Correct answer: B

Rationale: Binocularity, the ability to fixate on one visual field with both eyes simultaneously, is typically achieved by the age of 3 to 4 months. Achieving binocularity at 1 month is too early for most infants as their visual system is still developing. Similarly, 6 to 8 months and 12 months are beyond the normal age range for achieving binocularity, and delayed achievement could indicate potential issues like strabismus, which may lead to visual impairment if not addressed.

2. The mother of a child with type 1 diabetes asks the nurse why her child cannot avoid all those ‘shots’ and take pills like an uncle does. How should the nurse respond?

• A. The pills work with adult pancreases only.
• B. Your child needs insulin replaced, and the oral hypoglycemic only add to an existing supply of insulin.
• C. The drugs affect fat and protein metabolism, not sugar.
• D. Perhaps when your child is older the pancreas will produce its own insulin, and then your child can take oral hypoglycemic agents.

Correct answer: B

Rationale: The correct answer is B. Children with type 1 diabetes require insulin replacement because their pancreas produces little or no insulin. Oral hypoglycemics used in type 2 diabetes work by improving the effectiveness of insulin the body already makes, which is not sufficient in type 1 diabetes. Choice A is incorrect because the issue is not about the pancreas being adult or child-specific but rather the type of diabetes. Choice C is incorrect because it misstates the mechanism of action of the medications. Choice D is incorrect because it provides inaccurate information about the potential for the child's pancreas to produce insulin in the future, which is unlikely in type 1 diabetes.

3. What is the most critical physiologic change required of newborns at birth?

• A. Transition from fetal to neonatal breathing
• B. Body temperature maintenance
• C. Stabilization of fluid and electrolytes
• D. Closure of fetal shunts in the heart

Correct answer: A

Rationale: The correct answer is A: Transition from fetal to neonatal breathing. The onset of breathing is the most immediate and critical physiologic change required for the transition to extrauterine life. Factors that interfere with this normal transition increase fetal asphyxia, which is a condition of hypoxemia, hypercapnia, and acidosis. While body temperature maintenance, stabilization of fluid and electrolytes, and closure of fetal shunts in the heart are crucial changes in the transition to extrauterine life, breathing and the exchange of oxygen for carbon dioxide must take precedence as they are essential for newborn survival.

4. Melena, the passage of black, tarry stools, suggests bleeding from which source?

• A. The perianal or rectal area
• B. The upper gastrointestinal (GI) tract
• C. The lower GI tract
• D. Hemorrhoids or anal fissures

Correct answer: B

Rationale: Melena indicates bleeding from the upper GI tract. The black, tarry appearance of the stool results from the partial digestion of blood as it passes through the intestines, typically originating from sources like the stomach or duodenum. Lower GI bleeding usually presents as bright red blood in the stool, originating from sources like the colon or rectum. Choices A, C, and D are incorrect because melena specifically points to upper GI bleeding rather than issues in the perianal/rectal area, lower GI tract, or hemorrhoids/anal fissures.

5. When should the dressing change for a post-op pediatric patient that is expected to be very painful and frightening be performed?

• A. In the patient’s room
• B. In the treatment room
• C. After discharge when the patient is at home
• D. In the playroom

Correct answer: B

Rationale: The correct answer is B: 'In the treatment room.' Performing painful procedures in the treatment room helps the child associate their own room with safety and comfort, not pain. Choice A is incorrect because performing the dressing change in the patient’s room may create a negative association with their safe space. Choice C is incorrect as it is important to ensure proper wound care and pain management before discharge. Choice D is incorrect as the playroom may not be equipped for a sterile dressing change.

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