HESI LPN
Pediatric Practice Exam HESI
1. During a routine monthly examination, a 5-month-old infant is brought to the pediatric clinic. What assessment finding should alert the nurse to notify the health care provider immediately?
- A. Temperature of 99.5°F
- B. Blood pressure of 75/48 mm Hg
- C. Heart rate of 100 beats per minute
- D. Respiratory rate of 50 breaths per minute
Correct answer: D
Rationale: A respiratory rate of 50 breaths per minute in a 5-month-old infant is higher than the expected range and may indicate respiratory distress. This finding is concerning and should prompt the nurse to notify the health care provider for further evaluation and intervention. A temperature of 99.5°F, blood pressure of 75/48 mm Hg, and heart rate of 100 beats per minute are within normal ranges for a 5-month-old infant. Elevated temperature may indicate a mild fever, which can be monitored. A blood pressure of 75/48 mm Hg is within the normal range for infants. A heart rate of 100 beats per minute is also within the expected range for a 5-month-old infant and does not typically require immediate notification of the health care provider.
2. When teaching a class about trisomy 21, the instructor would identify the cause of this disorder as:
- A. nondisjunction.
- B. X-linked recessive inheritance.
- C. genomic imprinting.
- D. autosomal dominant inheritance.
Correct answer: A
Rationale: The correct answer is A: nondisjunction. Trisomy 21, also known as Down syndrome, is caused by nondisjunction, which is an error in cell division leading to an extra copy of chromosome 21. This additional genetic material alters the course of development and causes the characteristics associated with Down syndrome. Choices B, C, and D are incorrect. X-linked recessive inheritance refers to genetic disorders carried on the X chromosome, genomic imprinting involves gene expression based on parental origin, and autosomal dominant inheritance relates to disorders caused by a dominant gene on one of the non-sex chromosomes. In the case of trisomy 21, the cause is specifically related to the error in chromosome division, making nondisjunction the most appropriate answer.
3. At 7 AM, a nurse receives the information that an adolescent with diabetes has a 6:30 AM fasting blood glucose level of 180 mg/dL. What is the priority nursing action at this time?
- A. Encourage the adolescent to start exercising.
- B. Ask the adolescent to obtain an immediate glucometer reading.
- C. Inform the adolescent that a complex carbohydrate such as cheese should be eaten.
- D. Tell the adolescent that the prescribed dose of rapid acting insulin should be administered.
Correct answer: D
Rationale: Rapid acting insulin will help lower the elevated blood glucose level quickly.
4. What information should be included in the preoperative plan of care for an infant with myelomeningocele?
- A. Positioning the infant supine with a pillow under the buttocks
- B. Covering the sac with saline-soaked nonadhesive gauze
- C. Wrapping the infant snugly in a blanket
- D. Applying a diaper to prevent fecal soiling of the sac
Correct answer: B
Rationale: Covering the sac with saline-soaked nonadhesive gauze is essential in the preoperative care of an infant with myelomeningocele. This practice helps prevent infection and maintains moisture around the sac before surgery, promoting optimal healing outcomes. Positioning the infant supine with a pillow under the buttocks may be uncomfortable and unnecessary. Wrapping the infant snugly in a blanket does not address the specific care needs of the myelomeningocele. Applying a diaper over the sac can increase the risk of infection and should be avoided in this case.
5. A child is admitted with extensive burns. The nurse notes burns on the child’s lips and singed nasal hairs. The nurse should suspect that the child has a(n)
- A. chemical burn
- B. inhalation injury
- C. electrical burn
- D. hot-water scald
Correct answer: B
Rationale: Burns on the lips and singed nasal hairs indicate inhalation injury, suggesting the child has inhaled hot gases or smoke. This presentation is common in cases where the respiratory tract is exposed to hot gases or smoke, leading to potential airway compromise. Choice A, chemical burn, is incorrect because there is no mention of exposure to chemicals, and the symptoms described are more indicative of inhalation injury. Choice C, electrical burn, is incorrect as there is no evidence of electrical involvement in the scenario provided. Choice D, hot-water scald, is incorrect because the presence of singed nasal hairs points more towards inhalation injury than a scald from hot water, emphasizing the need to prioritize airway management and respiratory support.
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