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Study identifier: NCT06268080 Synced from ClinicalTrials.gov · July 28, 2026
● Recruiting

Depth of Anesthesia on Postoperative Delirium and Cognitive After Surgery

Condition: Delirium, Postoperative · Anesthesia · Surgery-Complications  ·  Sponsor: Auckland City Hospital

PhaseNA
Planned participants2766
Who can joinAll sexes, 55 Years to no upper limit
Healthy volunteersNo

About this study

The goal of this clinical trial (Balanced-2 study) is to compare light to deep general anesthesia using widely available brain monitors, to see if 'light' anesthesia could reduce rates of delirium, cognitive decline, and disability in older adults undergoing major surgery. Delirium is the most common serious surgical complication, occurring in an estimated one in four older adults undergoing major surgery. Delirium causes significant distress to patients and family, and is associated with prolonged hospital stay, physical disability, progression to dementia-like illnesses, and discharge to long-term care. Between 10 - 30% of adults aged 70 years and above have surgery every year, and preserving brain health and wellbeing is an important priority during this time. Older adults (aged ≥65 years, or Indigenous, Pacific patients aged ≥55 years) undergoing major surgery with general anesthesia (excluding heart and brain surgery) and able to provide consent will be able to participate. Participants will be randomized to two groups - a lighter general anesthesia group and a deeper general anesthesia group using processed electroencephalography (a brain monitor that provides information on depth of anesthesia using brain waves). The anesthesiologist will titrate anesthetic drugs according to the brain monitor. Participants will be followed up to determine if they experience delirium after surgery, and longer term impact of delirium such as cognitive and physical decline will also be…

This description comes directly from the study's public registry record.

Talk to the study team

Davina J McAllister, DipNursing  ·  +64 274891940  ·  davinams@adhb.govt.nz

Carolyn Deng  ·  +64 21666294  ·  carolynd@adhb.govt.nz

Always discuss trial participation with your own doctor first.

Locations (3)

Auckland City Hospital, Health New ZealandGrafton, Auckland, New ZealandRecruiting
North Shore HospitalAuckland, North Island, New ZealandNot Yet Recruiting
Christchurch HospitalChristchurch, South Island, New ZealandRecruiting

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Source record: clinicaltrials.gov/study/NCT06268080