Consequences of delirium after cardiac operations

Area of Science:

• Cardiology
• Geriatrics
• Neuroscience
• Psychiatry

Background:

• Delirium is a transient mental syndrome affecting consciousness, cognition, and perception.
• Patients undergoing cardiac operations, particularly the elderly, face an elevated risk of developing delirium.
• Hospital-acquired delirium is linked to adverse outcomes including mortality, extended hospital stays, and functional decline.

Purpose of the Study:

• To investigate the consequences of delirium in patients following elective cardiac operations.
• To assess the association between postoperative delirium and mortality, readmission rates, quality of life, and cognitive/functional status.

Main Methods:

• A prospective follow-up study involving 300 patients undergoing elective cardiac operations.
• Utilized Short Form 36-Item questionnaire, Cognitive Failure Questionnaire, and a custom questionnaire.
• Assessed outcomes at 6 months post-procedure, including mortality and readmission rates.

Main Results:

• Postoperative delirium occurred in 17% of patients (52 out of 300).
• Delirium was associated with significantly higher mortality (13.5% vs. 2.0%) and readmission rates (45.7% vs. 26.5%).
• Patients with delirium experienced reduced quality of life, cognitive deficits (attention, memory, perception, motor function), and functional impairments.

Conclusions:

• Postoperative delirium following cardiac surgery has substantial negative consequences.
• Findings support the need for intervention studies focusing on delirium prevention, early detection, and treatment.
• Effective strategies could improve postoperative functional and cognitive recovery in cardiac surgery patients.