Kevin Smith suffers massive heart attack, tweets 'For now, I’m still above ground!'

Show Caption Hide Caption Kevin Smith recovering from 'widowmaker' heart attack The 47-year-old, writer, producer, director and actor said one his heart's main arteries was 100% blocked.

Filmmaker Kevin Smith says he suffered a terrifying health scare.

Smith, 47, shared a photo on Twitter from what appeared to be a hospital bed early Monday morning, writing that he suffered "a massive heart attack" after his first comedy show Sunday. The Clerks writer-director was scheduled for two shows at the Alex Theatre in Glendale, Calif, according to the venue's website.

"The Doctor who saved my life told me I had 100% blockage of my LAD artery (aka “the Widow-Maker”)," Smith wrote on Twitter. "If I hadn’t canceled show 2 to go to the hospital, I would’ve died tonight. But for now, I’m still above ground!"

After the first show this evening, I had a massive heart attack. The Doctor who saved my life told me I had 100% blockage of my LAD artery (aka “the Widow-Maker”). If I hadn’t canceled show 2 to go to the hospital, I would’ve died tonight. But for now, I’m still above ground! pic.twitter.com/M5gSnW9E5h — KevinSmith (@ThatKevinSmith) February 26, 2018

The LAD, or left anterior descending artery, is the largest of the three arteries supplying blood to the heart.

Why is it called the "widowmaker?" According to the University of Michigan's Frankel Cardiovascular Center website, a blockage as severe as Smith's starves the heart muscle of oxygen, triggering an abnormal heart rhythm, possibly leading to cardiac arrest, a situation where seconds mean the difference between survival and death.

If the term "widowmaker" sounds familiar, that may be because it's the type of heart attack that killed Jack Pearson (Milo Ventimiglia) on the NBC drama This Is Us in an episode earlier this month. Bob Harper, the trainer on the network's weight-loss show The Biggest Loser, also suffered a widowmaker. (And despite the nickname, women can suffer them as well.)

Smith elaborated about the incident in a NSFW Facebook post, describing his symptoms. "After the first show, I felt kinda nauseous. I threw up a little but it didn’t seem to help," he wrote. "Then I started sweating buckets and my chest felt heavy. Turns out I had a massive heart attack." (Excessive sweating despite minimal exertion, a feeling of tightness in the chest are symptoms of a widowmaker, though sometimes there aren't any warning signs.)

Smith continued, revealing that he learned something about himself during the scare. "Death," Smith writes, "was always the thing I was most terrified of in life." However, he says throughout the experience he was "filled with a sense of calm."

"I’ve had a great life: loved by parents who raised me to become the individual I am," he continued. "I’ve had a weird, wonderful career in all sorts of media, amazing friends, the best wife in the world and an incredible daughter who made me a Dad. But as I stared into the infinite, I realized I was relatively content.

"Yes, I’d miss life as it moved on without me — and I was bummed we weren’t gonna get to make #jayandsilentbobreboot before I shuffled loose the mortal coil," he added. "But generally speaking, I was okay with the end, if this was gonna be it. I’ve gotten to do so many cool things and I’ve had so many adventures — how could I be (expletive) about finally paying the tab."

After mentioning the likelihood of "some lifestyle changes," Smith concluded his post. "The point of this post is to tell you that I faced my greatest fear tonight ... and it wasn’t as bad as I’ve always imagined it’d be," he said. "I don’t want my life to end but if it ends, I can’t complain. It was such a gift."

Celebrities were quick to react to Smith's ordeal on social media.

Chris Pratt said he was praying for the Jay and Silent Bob Strike Back director and recalled seeing Clerks in high school.

Praying for you. I will continue to. You inspired me with Clerks when I was a senior HS. I’m tagging my Lb/rb football coach who showed me the movie cause he believed in me and knew I’d be inspired. @hodge1916 🙏♥️🙏 https://t.co/syB7BiQaoY — chris pratt (@prattprattpratt) February 26, 2018

Josh Gad was "beyond grateful" Smith made it to the hospital in time. "Sending lots of love your way," he wrote. "Stay healthy @ThatKevinSmith. The world needs you."

Oh my God! So unbelievably sorry. But also beyond grateful you got there in time. Sending lots of love your way. Stay healthy @ThatKevinSmith. The world needs you. https://t.co/Ma1aaBQBve — Josh Gad (@joshgad) February 26, 2018

"Kev is a wonderful force of good and humor in this world and I'm proud to be his friend," Chris Hardwick wrote in a NSFW tweet. "We are lucky we didn't lose him so PLEASE send him HUGS!!!"

Tom Arnold offered Smith, "Whatever you need buddy."

Whatever you need buddy ❤️💔🙏👊 https://t.co/h4PnJL3WLo — Tom Arnold (@TomArnold) February 26, 2018

Jack Osbourne wished him a "speedy recovery."

Hey @ThatKevinSmith just sending you some love. Speedy recovery my man. — Jack Osbourne (@JackOsbourne) February 26, 2018

Smith's rep did not immediately respond to USA TODAY's request for comment.