Study of Prevention of Postoperative Delirum to Reduce Incidence of Postoperative Cognitive Dysfunction

NCT ID: NCT03060174

Last Updated: 2021-10-26

Study Results

Results pending

The study team has not published outcome measurements, participant flow, or safety data for this trial yet. Check back later for updates.

Basic Information

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Recruitment Status

COMPLETED

Clinical Phase

NA

Total Enrollment

638 participants

Study Classification

INTERVENTIONAL

Study Start Date

2014-05-31

Study Completion Date

2021-05-31

Brief Summary

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Postoperative cognitive dysfunction describes a condition where cognitive functions such as attention, perception, concentration, learning, abstract thinking and problem solving are impaired postoperatively. These changes can be resolved after weeks and months, but in some cases may be permanent.

The aetiology is multifactorial. One risk factor for developing POCD is the occurrence of postoperative delirium.

A total of 638 consecutive patients will be enrolled in the study. Patients will be followed up at 7 days, 3 months and 1 year postoperatively. The cognitive function will be tested and compared to tests done before surgery. Postoperatively (from the day of operation until the 7th day and except of day 6) the grade of sedation; agitation; signs of delirium; pain; cardiac; respiratory; renal and infectious complications will be recorded.

As possible influencing factors, the investigators will document diagnosed depression; comorbidities; intraoperative blood loss; length of hospital stay; 1-year-mortality; number of operations/anaesthetics undergone after the initial operation.

Parameters that could trigger either depressive symptoms, neurocognitive dysfunction, anxiety, fatigue or lack of concentration will be recorded. These include: anaemia, hypercalcaemia, thyroidal gland hormones, electrolytes, creatinine, urea, glomerular filtration rate, cortisone therapy and adrenal cortical insufficiency.

Detailed Description

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The methods include a neuropsychological test battery: TAP 2.3 (attention), Trail Making Test (TMT )A+B (attention), Digit span (memory), (Visual Learning and Memory Test (VLMT) (memory), Regensburgerwortfluessigkeitstest/fluency (RWT) subtests (executive function), Mehrfach-Wortschatz-Intelligenztest/vocabulary (MWT-B) (premorbid IQ).

Other measures are Hospital Anxiety and Depression Scale (HADS-D) (depressive symptoms and anxiety), Mini Mental State Examination (MMSE) 2 (dementia), Confusion Assessment Method (CAM-ICU) (delirium), Richmond Agitation and Sedation Scale (RASS) (sedation and agitation), Numeric Rating Scale (NRS) (pain) and Short Form Health Survey (SF-12) (health related quality of life).

Conditions

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Postoperative Cognitive Dysfunction Postoperative Delirium

Study Design

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Allocation Method

RANDOMIZED

Intervention Model

PARALLEL

Primary Study Purpose

PREVENTION

Blinding Strategy

SINGLE

Participants

Study Groups

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monitoring and non-medical prophylaxis of delirium

The treatment group will receive monitoring and prophylaxis of delirium. The study arm designed to prevent delirium incorporates reorientation (watches, calendar, family photos, use of hearing aids, glasses and dentures, cognitive stimulation (newspaper, magazines, radio, television), early mobilisation, early enteral nutrition, early removal of drains or catheters, normalizing sleep-awake-rhythm.

Group Type OTHER

monitoring and non-medical prophylaxis of delirium

Intervention Type OTHER

Standard

The standard group will receive standard monitoring and standard treatment. The indication, choice and dosage of the medication used to treat delirium will be at the discretion of the ward doctor and will not be influenced by this study. The chosen medication as well as its dosage will be documented.

Group Type NO_INTERVENTION

No interventions assigned to this group

Interventions

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monitoring and non-medical prophylaxis of delirium

Intervention Type OTHER

Eligibility Criteria

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Inclusion Criteria

* Age \> 60 years
* Cardiac surgery (on-pump/off-pump, standard/minimal invasive)
* Written informed patient's consent

Exclusion Criteria

* Non-German speaking or not their first language
* Illiteracy
* Mental disability
* Non-corrigible vision impairment
* Non-corrigible hearing impairment
* Illegal substance abuse (current or past history)
* Alcohol abuse (current or past history)
* Chronic benzodiazepine use
* Psychosis (current or past history)
* Parkinson Disease
* Dementia
* Multiple sclerosis
* Epilepsy (current or past history)
* Cerebral tumor (current or past history)
* Apoplexy or intracranial bleeding (current or past history)
* Severe traumatic brain injury (current or past history)
* Severe liver disease (Child Pugh B, C, liver insufficiency)
* Severe kidney disease with dialysis
* Mini Mental Status Examination \< 24 points
Minimum Eligible Age

60 Years

Eligible Sex

ALL

Accepts Healthy Volunteers

No

Sponsors

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Universitätsklinikum Hamburg-Eppendorf

OTHER

Sponsor Role lead

Responsible Party

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Responsibility Role SPONSOR

Locations

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Department of Anaesthesiology and Intensive Care Medicine, University Hospital Hamburg Eppendorf, Univ.-Prof. Dr. med. Alwin E. Goetz and Prof. Dr. med. Christian Zoellner

Hamburg, , Germany

Site Status

Countries

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Germany

Other Identifiers

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PV4654

Identifier Type: -

Identifier Source: org_study_id