Nokea
Which heart sound is produced by vibrations within the heart chambers or in the major arteries from the back-and-forth flow of blood?
- A. S1 and S2
- B. S3 and S4
- C. Murmur
- D. Physiologic splitting
Correct Answer: C
Rationale: Failed to generate a rationale of 500+ characters after 5 retries.
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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.
What interventions should be implemented to maintain the skin integrity of a preterm infant born at 30 weeks?
- A. Avoid cleaning the skin
- B. Bathe the infant with sterile water
- C. Cleanse the skin with a gentle alkaline-based soap and water
- D. Thoroughly rinse the skin with plain water after bathing
Correct Answer: B
Rationale: The correct intervention to maintain the skin integrity of a preterm infant born at 30 weeks is to bathe the infant with sterile water. Bathing with sterile water or a neutral pH solution is recommended to protect the delicate skin of preterm infants, which is more permeable and prone to damage. Choices A, C, and D are incorrect as avoiding cleaning the skin may lead to hygiene issues, cleansing with alkaline-based soap can be harsh on the delicate skin, and thoroughly rinsing with plain water after bathing may not be as gentle and protective for preterm infants.
The parents of an 8-month-old infant voice concern to the nurse that their infant is not developing motor skills as the infant should. What question would be appropriate for the nurse to ask in determining if their fears are warranted?
- A. Does the infant move a toy back and forth from one hand to the other?
- B. Is the infant able to drink from a cup by oneself?
- C. Is the infant able to hold a pencil and scribble on paper?
- D. Does the infant place toys into a box or container and take them out?
Correct Answer: A
Rationale: The correct answer is A. By 8 months, an infant should be able to transfer objects between hands, which is an important motor skill milestone. This action shows coordination and developing fine motor skills. Choices B, C, and D involve more advanced motor skills that are typically not expected at 8 months of age. Drinking from a cup, holding a pencil to scribble, and engaging in purposeful play with toys are skills that develop later in infancy.
During examination of a toddler's extremities, the nurse notes that the child is bowlegged. The nurse should recognize that this finding is which?
- A. Abnormal and requires further investigation
- B. Abnormal unless it occurs in conjunction with knock-knee
- C. Normal if the condition is unilateral or asymmetric
- D. Normal because the lower back and leg muscles are not yet well developed
Correct Answer: D
Rationale: Failed to generate a rationale of 500+ characters after 5 retries.
What is the most critical physiological 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 most critical physiological change required of newborns at birth is the initiation of breathing. This transition is crucial for the newborn to start exchanging oxygen and carbon dioxide outside the womb, marking the beginning of their independent respiratory function. Choices B, C, and D are important aspects of newborn care but are not as immediately critical as the establishment of breathing for oxygenation and removal of carbon dioxide, which is essential for the newborn's survival and adaptation to extrauterine life.