Blood cell ratio may flag delirium risk in elderly surgery patients

NCT ID NCT07322744

Completed Knowledge-focused Sponsor: Chinese PLA General Hospital Source: ClinicalTrials.gov ↗

First seen Jun 25, 2026 · Last updated Jun 27, 2026 · Updated 1 time

Summary

This completed study looked at whether a simple blood test measuring the ratio of two types of white blood cells (lymphocytes to monocytes) could help predict postoperative delirium—a state of confusion after surgery—in older adults. Researchers studied over 6,400 surgical patients aged 65 and older, also considering their frailty status. The goal was to see if this blood marker could better identify those at risk, potentially leading to earlier preventive measures.

What this could mean

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

What this could lead to: If successful, this could help doctors identify older patients at higher risk of confusion after surgery, allowing for better preventive care.
What could go wrong: This is an observational study, not a treatment trial. It cannot prove cause and effect, and results may not apply to all surgical patients.

This is an AI summary of the original study and may miss details. Read our disclaimer.

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Conditions

The condition(s) this trial relates to.

Emergence Delirium Frailty

As listed by the trial registrant

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

FRAILTY AT OLDER ADULTS LYMPHOCYTE POSTOPERATIVE DELIRIUM (POD)

Contacts and locations

Locations

28 Fuxing Road, Haidian District

Beijing, China

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