Which finding should the nurse in the emergency department identify as an indicator that a 3-year-old child has been mistreated?

• A. The toddler does not remember how the injury occurred.
• B. The parents are extremely calm in the emergency room.
• C. The injury sustained is highly unusual for 3-year-old children.
• D. The child was doing something unsafe when the injury occurred.

Answer: (C)

The main idea here is that injuries in a child should align with what’s developmentally plausible for their age. When a finding suggests a pattern that doesn’t fit, it raises concern for non-accidental injury or mistreatment.

Choosing that an injury is highly unusual for a 3-year-old is the strongest indicator because it signals a mismatch between what the child’s age and typical activities would produce and what actually happened. In this age group, injuries tend to come from common, age-appropriate accidents. An injury that is markedly atypical—uncommon in toddlers or not easily explained by their level of mobility and activity—warrants immediate, careful assessment for possible abuse and protective concerns. This kind of finding prompts clinicians to look more closely at the history, examine for other injuries, and consider involving child protection services if needed.

The other options don’t point as clearly to mistreatment. A child not remembering how the injury occurred can happen with young kids due to memory limitations or fear, and isn’t by itself evidence of abuse. A parent who is extremely calm in the emergency department can be typical in some families and does not reliably indicate abuse. If a child was doing something unsafe when the injury occurred, that could be a normal accident in a child’s exploration, rather than a sign of maltreatment.

So, the standout clue is an injury that is highly unusual for a child this age, because it most strongly suggests that the injury mechanism may not fit the child’s developmental capabilities and that further evaluation for mistreatment is warranted.