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Fig. 3 | Journal of Cardiothoracic Surgery

Fig. 3

From: Is hyperlipidemia a potential protective factor against intraoperative awareness in cardiac surgery?

Fig. 3

The Michigan Awareness Classification of Awareness. Class 1 denotes isolated auditory perceptions; Class 2 tactile perceptions (e.g., surgical manipulation or endotracheal tube); Class 3 pain; Class 4 paralysis (e.g., feeling one cannot move, speak or breathe); Class 5 paralysis and pain. “Distress” was assessed when a patient reported of fear, anxiety, suffocation, sense of doom, sense of impending death, etc. The red column indicates the patients with distress, and blue column indicates the patients without distress

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