Free CPEN Practice Test Questions

A 7-year-old boy presents to the emergency department with severe right leg pain and fever. His parents report that he recently recovered from a viral upper respiratory infection a week ago. On examination, the right knee is swollen, warm, and tender with decreased range of motion. Laboratory tests reveal elevated white blood cell count and increased ESR. Which of the following is the most appropriate initial management step for this patient?

A 13-year-old male with a history of acute lymphoblastic leukemia (ALL) is brought to the emergency department by his parents due to persistent vomiting, lethargy, and muscle weakness. Laboratory findings reveal hyperkalemia, hyperphosphatemia, and hypocalcemia. What is the most appropriate initial treatment to manage this patient's condition?

A 4-year-old girl is brought to the emergency department by her parents who report she has been drinking excessive amounts of water, urinating frequently, and has been more irritable than usual. Laboratory studies reveal a serum sodium level of 150 mmol/L. Which of the following is the most appropriate initial management step in this patient?

A 2-day-old newborn is brought to the emergency department with concerns of lethargy and poor feeding. The infant was born at term, and the delivery was uneventful. On examination, the newborn is pale and has a weak cry. Axillary temperature is 35.8ºC (96.4ºF). Which of the following is the most appropriate initial intervention for this infant?

A 4-year-old child is brought to the emergency department after being exposed to a household cleaning product. The child is conscious but exhibits excessive salivation, muscle twitching, and pinpoint pupils. Vital signs are: BP 86/48 mm Hg, HR 58 beats/min, RR 24 breaths/min, O2 sat 95% on room air. Which of the following interventions should be prioritized for this patient?

A 4-year-old girl is brought to the emergency department after accidentally ingesting an unknown number of iron tablets. She has been vomiting and appears lethargic. Her laboratory results show an elevated serum iron level. Which of the following is the most appropriate initial treatment for this patient?

A 15-year-old adolescent presents to the emergency department with his caregiver after being involved in an accident at a local pool. The patient is conscious and oriented but has multiple abrasions and complains of severe shoulder pain. The caregiver informs the nurse that the patient is under the care of a foster family and is currently in the state's custody. The medical team needs to perform an emergency reduction of the dislocated shoulder. Who has the legal authority to provide consent for this procedure?

A 10-year-old child with a history of severe anxiety and oppositional defiant disorder has been physically aggressive toward staff in the emergency department during previous visits. He is now brought in by his mother due to a potential fracture after a fall at home. The mother expresses concern about the possibility of new staff being unprepared to manage his behavior. Which of the following initial strategies should the nurse implement to minimize the risk of violence?

A 9-year-old girl presents to the emergency department after being found unconscious in a hot car for an unknown duration. Upon arrival, her vital signs are: BP: 102/64 mm Hg, HR: 114 beats/min, RR: 30 breaths/min, T: 105.4ºF (40.8ºC), O2 sat: 93% on room air. She appears flushed and is responsive only to painful stimuli. What is the most appropriate initial intervention for this patient?

A 12-year-old male presents to the emergency department with a history of recent exposure to a venomous snake bite. He is complaining of severe pain, swelling, and tingling sensation at the site of the bite on his lower leg. Vital signs are stable, but upon examination, there is noticeable edema and erythema extending from his ankle to his knee. Which of the following interventions should be prioritized for this patient?