accidental awareness during operations often leads to post-traumatic distress and decreased quality of life

https://www.cnn.com/2018/06/04/health/cpr-awareness-resuscitation-study/index.html

Patient remains awake during 90 minutes of CPR, doctor says - CNN

...

"We know from anesthesia that accidental awareness during operations often leads to post-traumatic distress and decreased quality of life. One might suspect that awareness during CPR may be just as stressful,"  

~Dr. Rune Sarauw Lundsgaard, an anesthesiologist at Herlev Hospital in Copenhagen and an attending physician on the case.