A nurse is assessing the fontanels of an 8-month-old infant.
Which of the following findings should the nurse recognize as an expected finding?
The anterior fontanel is open.
The posterior fontanel is open.
Both fontanels show molding.
Both fontanels are the same size.
The Correct Answer is A
Choice A rationale:
The anterior fontanel is open in an 8-month-old infant. The anterior fontanel, located at the top of the baby's head where the skull bones have not yet fused, typically closes between 12 to 18 months of age. It is a normal finding in an 8-month-old infant.
Choice B rationale:
The posterior fontanel closes earlier than the anterior fontanel, usually within the first few months of life. It is a smaller diamond-shaped area located at the back of the baby's head. It is not expected to be open in an 8-month-old infant.
Choice C rationale:
Molding refers to the shaping of the fetal head during passage through the birth canal. It can cause temporary changes in the shape of the baby's skull. By 8 months of age, molding is not an expected finding as the skull bones have had time to return to their normal shape.
Choice D rationale:
Both fontanels being the same size is not a typical finding. The anterior fontanel is larger than the posterior fontanel, and their sizes are proportional. Any significant deviation from this proportion could indicate abnormal skull development and should be further assessed.
Nursing Test Bank
Naxlex Comprehensive Predictor Exams
Related Questions
Correct Answer is A
Explanation
The correct answer is A. Increased pain.
Choice A reason: Naloxone is an opioid antagonist that, when administered, reverses the effects of opioids. Since opioids provide analgesia, their reversal will lead to the return of pain sensation. The normal pain response varies widely among individuals and depends on the type and amount of opioid the patient received, as well as their pain threshold and tolerance.
Choice B reason: Somnolence, or drowsiness, is a common effect of opioid administration. Naloxone works by displacing opioids from their receptors, which should counteract the sedative effects of opioids and reduce somnolence. Therefore, after naloxone administration, the nurse should not expect somnolence as a finding.
Choice C reason: Hyperglycemia, or high blood sugar, is not a direct effect of naloxone administration. While some studies suggest that naloxone may affect blood glucose levels under certain conditions, such as in the case of tramadol overdose, it does not typically cause hyperglycemia. Normal blood glucose levels range from 70 to 99 mg/dL fasting, and up to 140 mg/dL two hours after eating.
Choice D reason: Hypoventilation, or reduced breathing rate and depth, is caused by opioid administration. Naloxone’s role is to reverse this effect, restoring normal breathing rates. The normal respiratory rate for a healthy adult at rest is 12 to 20 breaths per minute.
Correct Answer is C
Explanation
Choice A rationale:
Administering 2 ounces of water to the newborn prior to the test is not a standard practice for newborn genetic screening. Newborns are typically screened for genetic disorders through a blood test, not by giving them water.
Choice B rationale:
This statement is incorrect. Newborn genetic screening is usually performed shortly after birth, not at 2 months old. Early screening allows for the early detection of certain genetic disorders, enabling timely interventions if needed.
Choice D rationale:
Drawing blood from the newborn's inner elbow is not specific guidance related to newborn genetic screening. Blood can be drawn from various sites, and healthcare providers choose the most appropriate site based on the newborn's condition and the required tests.
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