‘He has come back from the dead’: The comedy legend spent eight days in a coma during the health crisis.

The famed comedian suffered a “potentially fatal” cardiac event that caused him being put into an medically induced coma amid the global health crisis, per details from a new documentary project about the comedy star.

The film, titled I’m Chevy Chase and You’re Not, the legend of movies such as Caddyshack and the National Lampoon series, who emceed the Oscars twice, was hospitalized for five full weeks in the hospital.

“He wasn't right, and he was unable to describe to me what was wrong. So, we went to the ER. His heart gave out. During those years he was drinking, he got cardiomyopathy; when the heart muscles get weaker, and they are unable to pump as much blood through the body with each beat.”

Medical professionals then put him into a coma for more than a week, before advising his daughter, his daughter: “His return is uncertain. We don’t know how cognizant he’ll be. Prepare yourselves for the worst.”

“When he woke up, all he was able to do was use his vocal cords,” she stated further. “He has essentially returned from the dead.”

Chase himself has revealed that he has experienced cognitive issues since his hospitalisation, and in the film he fails to recall some of his past on-set and backstage controversies, including a fight with Bill Murray in a Saturday Night Live dressing room.

The comedian noted he was “disappointed” by his absence from the milestone special of SNL earlier this year, at which he was in the crowd but not participating.

“Honestly, it was quite upsetting,” he said. “I haven't spoken about this until now. But I assumed that I could have been on the stage too with all the other actors. When former castmates Garrett and Laraine Newman took the stage, I was curious as to why I didn’t. No one asked me to. Why was I excluded?”

The 82-year-old, almost died in 1980 when he was electrocuted on the set of Modern Problems, an incident which led to a period of depression.