Study Questions Overuse of Head CTs in Older Adults After Falls

New research is raising concerns about potential overuse of head CT scans in older adults who seek emergency care after a fall, particularly those with lower-risk injuries. The findings, published in the Cureus Journal of Medical Science, suggest that routine imaging in this population may not always be clinically necessary and could contribute to overcrowded emergency departments and unnecessary costs.

The retrospective study analyzed CT brain scans performed on patients aged 65 and older who presented to the emergency department at Northern Hospital Epping in Melbourne, Australia, between June and August 2024. Researchers aimed to assess how often these exams produced positive findings, and whether certain patient or clinical characteristics were associated with a higher likelihood of intracranial injury.

Of the 110 patients included in the analysis, only 8.2% had positive CT findings. The median patient age was 73.5 years. Most of the scans did not reveal any acute abnormalities, raising questions about the utility of imaging all older adults with head trauma, regardless of symptom severity or mechanism of injury.

Several clinical factors were examined to determine their association with positive imaging results. Use of anticoagulant medications and the presence of new focal neurological deficits were significantly linked to higher rates of acute findings on CT. On the other hand, common indicators such as suspected skull fracture, confusion, vomiting, and even loss of consciousness were not associated with an increased likelihood of a positive scan in this study.

Lead author Yahy Al Fathil, a resident physician in emergency medicine, noted that while the findings are preliminary, they point to a need for more nuanced decision-making around imaging in older patients. “With all older adults deemed to require imaging in mild traumatic brain injury regardless of symptoms or mechanism, the additional cost of prolonged ED stays necessitates consideration, with the added burden to already crowded EDs,” he and his colleagues wrote.

The implications go beyond cost and workflow. Extended time in emergency departments has been associated with increased risk of delirium in older adults. Streamlining imaging protocols could therefore also benefit patient safety and comfort.

The authors suggested that emergency departments could improve assessment practices by routinely documenting key variables such as anticoagulant use, baseline cognitive function, and patient frailty. These details, they argue, could be used to create better risk stratification frameworks for determining when imaging is most appropriate.

While the study offers a starting point for reconsidering current imaging practices, the authors emphasized that further research is necessary before formal changes are made. Larger, prospective studies would be needed to validate their findings and support the development of updated clinical guidelines.

For now, the study highlights an opportunity to balance clinical vigilance with a more individualized approach to imaging older patients after a fall—potentially improving care while reducing unnecessary interventions.