NCT00784576

Incidence and Predictors of Delirium After Cardiac Surgery

Incidence and Predictors of Delirium After Cardiac Surgery: A Prospective Observational Cohort Study

• Status: Completed
• Phase: —
• Study type: Observational
• Enrollment: 563 (actual)
• Sponsor: Medical University of Lodz · Academic / Other
• Sex: All
• Age: 18 Years
• Healthy volunteers: Not accepted

Summary

The objective of the present research is to evaluate the incidence and independent predictors of delirium observed among patients after cardiac surgery. Moreover, to asses the sensitivity and specificity of the Diagnostic and Statistical Manual of Mental Disorders, Fourth Edition criteria (DSM-IV) and International Statistical Classification of Diseases and Health Related Problems - Tenth Revision criteria (ICD-10), and the cut-off values of the Memorial Delirium Assessment Scale (MDAS) and Delirium Index (DI) in diagnosing postoperative delirium.

Detailed description

Since 1954, the issue of delirium as a complication following cardiac surgery has been extensively investigated. Despite this, postoperative delirium is still a serious event that results in higher morbidity and mortality rates, and prolongs hospitalisation. Moreover, there is a considerable discrepancy between studies on the incidence and risk factors of delirium among cardiac surgery patients.The first potential reason for this observation is retrospective design of some studies, secondly, the modest number of participants in numerous prospective studies which does not provide strong statistical power to select patients with delirium and detect risk factors of this complication. Unfortunately, reports with a more considerable number of patients often have methodological limitations. Additionally, in previous studies authors usually analyzed pre- and intraoperative variables ignoring potential postoperative risk factors of delirium. Finally, some variables which seem to have a crucial role in aetiology of delirium after cardiac surgery, particularly perioperative hypoxia, anaemia, and preoperative psychiatric disorders like depression and cognitive impairment, have not been properly investigated to date. Therefore, we made an effort to design a prospective study on the incidence and predictors of delirium after different types of cardiac surgery, conducted by experienced investigators, and with the use of valid diagnostic tools.To our knowledge this is the first research pointing out the association between preoperative psychiatric comorbidity, anaemia and postoperative hypoxia, and delirium after cardiac surgery.

Conditions

• Delirium
• Depression
• Cognitive Impairment

Timeline

• Start date: 2004-11-01
• Primary completion: 2007-04-01
• Completion: 2008-10-01
• First posted: 2008-11-04
• Last updated: 2008-12-03

Locations

1 site across 1 country: Poland