Impact of Obesity on Post-operative Cognitive Dysfunction: Role of Adipose Tissue (ODCOTA)

Toulouse University Hospital

Status: Enrolling

Conditions: Post-Operative Confusion; Cognitive Impairment; Obesity

Treatments: Biological: Blood sampling; Biological: white adipose tissue sampling

Study type: Observational

Funder types: Other

Identifiers

NCT04907565

RC31/21/0014

Details and patient eligibility

About

This research aims at describing the relationship between white adipose tissue inflammation and post-operative cognitive dysfunctions.The possible link between inflammatory cytokines secretions of the white adipose tissue of a surgical wound and the arising of patient's cognitive dysfunction in the post-operative course will be investigated. The hypothesis is that obese patient's inflammation of the white adipose tissue leads to cognitive dysfunction.

Full description

The postoperative cognitive dysfunctions (POCD) are characterized by delirium and cognitive impairment. The delirium is defined by an acute altered attention with a fluctuating course. The post-operative cognitive impairment involves the early alteration of different functions including memory, attention and cognitive flexibility. POCD have a major impact in patient's morbidity. They are linked to the systemic inflammation induced by the surgical wound. The systemic inflammation leads to the rupture of the brain-blood barrier and to hippocampal inflammation. As hippocampus mediates the principal cognitive functions, hippocampal inflammation leads to POCD. Orthopedic and cardiac surgery are particularly concerned. Obesity is growing condition in the French population. It is linked to chronic systemic inflammation and altered cognitive functions. We think that obese people may present a susceptibility to POCD because of the pre-operative systemic inflammation.

Enrollment: 408 estimated patients

Sex: All

Ages: 60 to 99 years old

Volunteers: No Healthy Volunteers

Inclusion criteria

• patient about to receive a hip arthroplasty under general anesthesia, elective cardiac surgery with cardiopulmonary bypass,
• patient with a MMSE score > or = 20(/30),
• patient able to give informed consent

Exclusion criteria

• emergency surgery, or surgery in a septic context,
• patient with a known dementia or altered MMSE score (under 20)

Trial design

408 participants in 2 patient groups

Obese patients

Description:

BMI \>30kg/m2

Treatment:

Biological: white adipose tissue sampling

Biological: Blood sampling

non obese patients

Description:

BMI between 18 to 29kg/m2

Treatment:

Biological: white adipose tissue sampling

Biological: Blood sampling