A child presents after an MVC with abdominal pain and a visible seatbelt sign. CT abdomen is initially normal. What is the most appropriate next step?

A 7-year-old with suspected physical abuse is admitted. What is the priority role of the PNP-AC in management?

A non-ambulatory 8-month-old is found to have posterior rib fractures on imaging. What is the most likely mechanism?  

A severely injured child has ongoing bleeding despite normal initial coagulation labs. What best explains this finding?

A 10-year-old presents with tinnitus, tachypnea, and metabolic acidosis after ingesting an unknown substance. Which acid–base abnormality is most characteristic of this toxicity?

A child presents with suspected abusive head trauma. Which physiologic factor most contributes to poor neurologic outcome?  

Which caregiver statement most raises concern for inflicted injury?

A 3-year-old child is brought to the emergency department after being found with an open bottle of an unknown household substance. The caregiver is unsure how much or what was ingested but reports the child had access for approximately 30 minutes. On arrival, the child is lethargic but arousable.  Vital signs: HR 156, RR 34, BP 94/48, Temp 37.6, SpO2 98% on room air Physical exam: Diaphoretic, flushed skin, vomited once in triage, no focal neuro deficits Lab results: pH 7.29, CO2 22, HCO3 10, Anion gap 26, serum glucose 88, Lactate 1.6, serum osmolality normal, urinalysis positive for ketones Which of the following is the most appropriate next step in management?

Which principle best describes the order of adding and removal from a stack?

This type of pulser generates numerous electrical spikes, which ultimately create a single sound pulse: