which developmental behavior should the practical nurse pn identify as normal for a 6 month old infant

HESI RN

Pediatric HESI

1. Which developmental behavior should the practical nurse identify as normal for a 6-month-old infant?

A. Rolls over completely.
B. Creeps on all fours.
C. Pulls self to a standing position.
D. Assumes a sitting position independently.

Correct answer: A

Rationale: The correct answer is A: 'Rolls over completely.' By 6 months of age, infants typically achieve the milestone of rolling over completely. This ability demonstrates increasing strength and coordination. Creeping on all fours, pulling self to a standing position, and assuming a sitting position independently are skills that are usually developed at later stages of infancy. Creeping usually occurs around 9-10 months, pulling self to a standing position around 9-12 months, and assuming a sitting position independently around 8 months. Therefore, at 6 months, rolling over completely is the most expected developmental behavior.

2. A child with pertussis is receiving azithromycin (Zithromax Injection) IV. Which intervention is most important for the nurse to include in the child's plan of care?

A. Obtain vital signs to monitor for fluid overload
B. Change IV site dressing every 3 days and as needed
C. Monitor for signs of facial swelling or urticaria
D. Assess for abdominal pain and vomiting

Correct answer: C

Rationale: When administering azithromycin IV, monitoring for signs of an allergic reaction, such as facial swelling or urticaria, is crucial. This helps in early detection of potential adverse reactions and ensures prompt intervention to prevent complications associated with the medication. The other options are not directly related to the administration of azithromycin IV in this scenario. Monitoring for fluid overload would be more relevant for fluid administration, changing IV site dressing is important but not the priority in this case, and assessing for abdominal pain and vomiting may be important but not as critical as monitoring for signs of an allergic reaction.

3. The nurse is assessing a 3-month-old infant who was brought to the clinic by the parents due to concerns about the infant’s feeding. The parents report that the infant has been vomiting after every feeding and has not gained any weight. What should the nurse assess first?

A. Evaluate the infant’s feeding technique
B. Check the infant’s hydration status
C. Measure the infant’s abdominal circumference
D. Review the infant’s growth chart

Correct answer: B

Rationale: Assessing hydration status is crucial in an infant who is vomiting frequently, as dehydration can quickly become a serious issue. In this scenario, the infant's inability to retain feeds and lack of weight gain may indicate a potential risk of dehydration, making it essential to prioritize checking the infant's hydration status to prevent complications. Evaluating the feeding technique (Choice A) could be important but is secondary to addressing potential dehydration. Measuring the abdominal circumference (Choice C) and reviewing the growth chart (Choice D) are not the priority in this situation where dehydration is a primary concern.

4. The nurse provides information about the human papillomavirus (HPV) vaccine to the mother of a 14-year-old adolescent who came to the clinic this morning complaining of menstrual cramping. Which explanation should the nurse provide to support administering the HPV vaccine to the adolescent at this visit?

A. Use of protective barriers during sexual activity prevents most strains of HPV infection
B. Most adolescents are not honest about being sexually active
C. Not all strains of HPV will be covered if given at a later date
D. Immunity must be established to prevent future HPV infection and the risk for cervical cancer

Correct answer: D

Rationale: Administering the HPV vaccine at this visit is essential to establish immunity against HPV, thus reducing the risk of HPV infection and cervical cancer. Vaccination is a proactive measure to protect the adolescent's health in the future. Choice A is incorrect because although protective barriers can reduce the risk of HPV transmission, the vaccine provides broader protection. Choice B is incorrect as it makes a generalization about adolescent behavior that is not relevant to vaccination. Choice C is incorrect as it suggests that delaying vaccination would not impact coverage, which is inaccurate as earlier vaccination provides broader protection against HPV strains.

5. The nurse is conducting an admission assessment of an 11-month-old infant with CHF who is scheduled for repair of restenosis of coarction of the aorta that was repaired 4 days after birth. Findings include blood pressure higher in the arms than the lower extremities, pounding brachial pulses, and slightly palpable femoral pulses. What pathophysiologic mechanisms support these findings?

A. The aortic semilunar valve obstructs blood flow into the systemic circulation
B. The lumen of the aorta reduces the volume of the blood flow to the lower extremities
C. The pulmonic valve prevents adequate blood volume into the pulmonary circulation
D. An opening in the atrial septum causes a murmur due to a turbulent left-to-right shunt

Correct answer: B

Rationale: The correct answer is B. Coarctation of the aorta causes narrowing of the aorta, reducing blood flow to the lower extremities. This narrowing results in higher blood pressure in the arms compared to the lower extremities, along with stronger brachial pulses and slightly palpable femoral pulses. Choices A, C, and D are incorrect because they do not align with the pathophysiological mechanism of coarctation of the aorta, which specifically leads to reduced blood flow to the lower extremities.