This study is a non-interventional, observational research project focused on monitoring sedation levels in patients who have undergone cardiac surgery. It uses a tool called Bispectral Index (BIS), which measures brain activity to assess sedation depth. The goal is to understand how often patients experience deep sedation (BIS \<50) during the first 48 hours in the ICU and to explore its impact on clinical outcomes like ventilation duration, ICU stay length, and complications such as infections or delirium. The study is conducted at two hospitals in Austria and involves patients who require mechanical ventilation and continuous sedation for more than six hours after surgery. BIS data will be collected continuously, but the readings will be blinded to the clinical team, meaning they will not influence patient care. Sedation will be managed using standard clinical practices. The findings aim to improve sedation management in ICUs.
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Proportion of time spent in deep sedation
Timeframe: immediately after extubation or up to 48 hours of ICU sedation - whichever comes first