just over a week ago,describes the terror as his wife's eyes went blank, before she went into a seizure and stopped breathing at her North London home.
, Fielder-Civil says they both spent three days getting wasted on drugs in August 2007 when Winehouse started foaming at the mouth and went into convulsions.
He told how he frantically tried to revive her with the kiss of life following the binge.
"It was nearly midnight and I'd finally got her upstairs. We were sitting on the bed talking. Her eyes suddenly went blank," he told the newspaper.
"She started having a fit on the bed. She slid down onto the floor before I could stop her. She started quivering again and it suddenly grew into what seemed like a full-blown epileptic fit.
"I was panicking. I didn't know how to help her. I was out of it on drugs as well - and was sobbing and crying out: 'Amy!'
"I knew it was important to stop her choking, so I turned her over on to her side, putting her in the recovery position.
He explained how he had to pull her tongue out of her mouth to stop her biting it.
"She had an awful look on her face, just frightened and pale.
"I knelt over her as she kept on fitting. But then suddenly she just passed out and stopped breathing.
"But somehow I managed to open her mouth and breathe air down her throat. At first nothing happened. So I did it again. I was feeling for her pulse because I thought her heart might have stopped.
"Then she spluttered - and I saw her chest rise.
"I was still sobbing and panicking but I just felt this huge relief that she was alive."
Winehouse had reportedly been on a drink and drugs binge for three days to celebrate the commercial and critical success of her album
Fielder-Civil then described how the singer slipped in and out of consciousness and was unable to recognise him.
Winehouse was later taken to London's University College Hospital where she collapsed again in the casualty department reception, before being put on a drip.
Her ex described the episode as "the most frightening thing I had ever seen", and says he begged his wife to kick her drug habit while they were married.
"She had everything going for her. But she ended up behaving badly just to shock. After a while that just becomes a bore. I wanted her to stop."
But forget about Ronson's chagrin, Fielder-Civil was the one who copped most of the anger - because Wino had promised to dedicate the song to him.
"She told me she was writing a song about me and her, and our relationship. How cool is that. To think, in 30 or 40 years, people would be watching this film and still hearing the song about us. That was really amazing - but she messed it all up."
How inconvenient.
"Amy has always been under intense pressure, even when we were together. So much is expected of her because
was such an amazing hit. People need to give her a break."
Blimey, it didn't take him long to crawl out of the woodwork and dish the dirt on his turbulent relationship with the jazz pixie. Despite the divorce, we think these two are totally co-dependent and, dare we say it, will end up entwined in each other's nicotine-tainted talons before you know it.
"Which star has been going on four-hour binges scoffing doughnuts and deep fried food after splitting up from her boyfriend? And she always carries a doggy bag."