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EPM.191
The relationship of preoperative regional cerebral oxygen saturation and PRE-DELIRIC scores in the prediction of postoperative delirium in cardiac surgery patients.

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The relationship of preoperative regional cerebral oxygen saturation and PRE-DELIRIC scores in the prediction of postoperative delirium in cardiac surgery patients

 

Background and purpose of the study

Importance of early diagnosis of delirium:

• Postoperative risk in cardiac surgery patients
• Increase in hospital stay, functional and cognitive deterioration, mortality

Aim of the study:

• Relationship preoperative SctO2 (through NIRS) and PRE-DELIRIC score?
 

Materials and methods

• Prospective study
• 30/06/2015 until 14/06/2016
• Elective cardiac surgery patients ≥ 70 years
• Preoperative SctO2 12 hours before cardiac surgery
• FORE-SIGHT ELITE™ technology
• PRE-DELIRIC and APACHE II score on ICU admission: risk of developing delirium
• CAM-ICU: presence of delirium
• Pearson correlation between the PRE-DELIRIC score, SctO2 and the APACHE II score
 

Results

• 39 patients: 10 postoperative delirium (25.6%) vs. 29 non-delirious
• Significant correlation: PRE-DELIRIC score and APACHE II score and the development of delirium
• Lower preoperative SctO2 when postoperative delirium (66.6%±3.9  vs. 68.4%±1.9 in non-delirious patients; p=0.179)
• No significant correlation found between preoperative SctO2 and the PRE-DELIRIC score (r=-0.181, p=0.270).
 

Conclusion

• PRE-DELIRIC score: adequate prediction of the risk on postoperative delirium in cardiac surgery patients
• No significant correlation between higher PRE-DELIRIC scores and lower preoperative SctO2 –levels
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