Nearly 40% of 140 cardiac arrest survivors claimed memories from when they were in cardiac arrest.
Awareness during anesthesia has been well described, but what about during cardiac arrest? Researchers performed a 4-year multicenter observational study involving a qualitative and quantitative interview of 140 post-cardiac arrest patients in the hospital (52) and after discharge (90).
Overall, 39% of patients believed they had memories from the time they were in cardiac arrest. Using a validated near-death-experience scale, 9% of patients reported such experiences, but only two patients claimed explicit recall of actual events related to their resuscitations. No other patient had memories related to any medical procedure, pain, or experience.