A simple clock drawing may reveal hidden brain risks before surgery

NCT ID NCT03175302

NEW Ongoing Knowledge-focused Sponsor: University of Florida Source: ClinicalTrials.gov ↗

First seen Aug 17, 2026 · Last updated Aug 17, 2026

Summary

This study looks at whether a digital version of the classic clock-drawing test can help identify older adults at higher risk for confusion or memory issues after surgery. Researchers will analyze data from thousands of patients aged 65 and older who take the test before an operation, using machine learning to spot patterns. The goal is to see if this quick screening tool can predict post-operative cognitive complications and guide better care.

What this could mean

Our plain-language read of the trial. This is informational only — not medical advice or a prediction.

Active substance: digital cognitive testing using a digital clock-drawing tool
What this could lead to: If successful, this could give doctors a simple, quick way to predict which older adults may face memory or thinking problems after surgery, allowing for better preparation and care.
What could go wrong: This is an observational study, so it cannot prove cause and effect. The digital test may not reliably predict real-world complications, and results may not apply beyond the specific hospital setting.

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Conditions

The condition(s) this trial relates to.

cognitive disorder Cognitive Dysfunction

As listed by the trial registrant

The condition terms exactly as the trial's registrant entered them.

COGNITIVE DYSFUNCTION

Contacts and locations

Locations

UF Health

Gainesville, Florida, 32610, United States

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Other studies related to the condition(s) this trial covers.