As investigators try to determine why a pilot and passengers fell unresponsive on a small jet that ultimately crashed in Virginia on Sunday, the tragedy evokes a critical consideration for pilots when flying: oxygen.

Miriam Margolyes has shared a health update after heart surgery, revealing that she now has part of a cow’s heart. Back in May, the Harry Potter actor underwent a minimally invasive procedure called a Transcatheter Aortic Valve Implantation (TAVI) to replace a narrow aortic valve after it fails to open properly. Appearing on the Table Manners podcast, Margolyes, 82, discussed the heart operation with hosts Jessie Ware and her mother, Lennie. “I’ve got a cow’s heart,” Margolyes revealed. “Well, not the whole heart. I’ve had an aortic valve replaced by a cow’s aortic valve.” Jessie asked if that was “common”, with Margolyes joking: “I think it’s rather refined, actually… I don’t know how common it is, I’d never heard of that operation. But it saves you from having open heart surgery, which would be infinitely more invasive.” Further discussing the surgery, Margolyes explained: “They made two little holes in your groin, one in each groin. and then they shoved this thing through. And I don’t know how they pull it up but they sort of pull it up with strings, into your heart. “And then when it comes to the point when it’s in your heart, they pull a little string and it goes pow! And lo and behold, your artery or your aortic valve is shoved unceremoniously to the side, and the cow’s aortic valve says, ‘Moo, I’m here.’ It’s rather amazing.” Margolyes also shared that she would “probably” use a wheelchair soon due to her bad back, but had “just sort of accepted” that it was going to be necessary. On her new fandom and being seen as a “national treasure”, thanks to her outspoken nature, she added: “It’s lovely to hear that you like me and you approve of me. But I truly am a little old lady. Trying to make a living. Trying to keep going.” Last month, the actor released her new memoir, titled Oh Miriam: Stories from an Extraordinary Life. In the book, which was full to the brim with revelations, Margolyes wrote that her current state of disability meant that she now is mostly unable to perform on the theatre. Describing herself as “semi-crippled”, she wrote that “usually that means you have to stop”. “I don’t think I can do theatre again unless I’m playing a character similarly disabled,” she said. “I know Maggie [Smith] and Eileen [Atkins] and Judi [Dench] and Vanessa [Redgrave] still tread the boards, and they’re older than me – but they’re fitter, b***** it, and good luck to them!” Read More Tilda Swinton, Steve Coogan and Miriam Margolyes among 2,000 artists calling for Gaza ceasefire 11 biggest revelations from Miriam Margolyes’ hilarious new memoir Miriam Margolyes says Steve Martin was ‘horrid’ on film set: ‘Perhaps he was method acting’ Call The Midwife ‘should come with a health warning’ My kids don’t have sushi in their packed lunches – does it make me a bad mum? Adele reveals she’s three months sober after being ‘borderline alcoholic’ in her 20s

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