In an infant with rib fractures, which imaging study is considered most critical initially?

In an infant with rib fractures, which imaging study is considered most critical initially?

• A. Head CT
• B. Long bone series
• C. Coagulation profile
• D. Retinal examination

Answer: (A)

In infants with rib fractures, the most urgent concern is an intracranial injury from abusive head trauma. A non-contrast head CT is the fastest, most sensitive initial imaging to detect acute intracranial hemorrhage (subdural, epidural, intraparenchymal), swelling, and skull fracture. Finding or ruling out a brain injury at this step directly informs urgent stabilization and management decisions and can be life-saving. Long bone surveys can reveal additional fractures, helping with the abuse assessment, but they do not identify brain injuries promptly. A coagulation profile may reveal a bleeding tendency, yet it won’t address the immediate need to detect intracranial injury. Retinal examination is important in the overall evaluation for abusive head trauma, but it is not an imaging test used to identify acute brain injuries first.

In infants with rib fractures, the most urgent concern is an intracranial injury from abusive head trauma. A non-contrast head CT is the fastest, most sensitive initial imaging to detect acute intracranial hemorrhage (subdural, epidural, intraparenchymal), swelling, and skull fracture. Finding or ruling out a brain injury at this step directly informs urgent stabilization and management decisions and can be life-saving.

Long bone surveys can reveal additional fractures, helping with the abuse assessment, but they do not identify brain injuries promptly. A coagulation profile may reveal a bleeding tendency, yet it won’t address the immediate need to detect intracranial injury. Retinal examination is important in the overall evaluation for abusive head trauma, but it is not an imaging test used to identify acute brain injuries first.