Sen. Bernie Sanders of Vermont experienced a heart attack earlier this week, according to a Friday statement from his 2020 presidential campaign.

He was released from a Nevada hospital after two-and-a-half days. He was initially admitted after having chest pain on Tuesday night, and doctors placed two stents in a blocked artery.

"I want to thank the doctors, nurses, and staff ... for the excellent care that they provided," Sanders said in the statement. "After two and a half days in the hospital, I feel great, and after taking a short time off, I look forward to getting back to work."

The 78-year-old senator, who is running for the Democratic Party's nomination, initially put off all 2020 campaign events following the Wednesday hospitalization.

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Sen. Bernie Sanders of Vermont experienced a heart attack earlier this week, according to a Friday statement from his 2020 presidential campaign.

He was released from a Nevada hospital after two-and-a-half days, after initially being admitted on Tuesday night due to chest pain. Doctors placed two stents in a blocked artery.

"I want to thank the doctors, nurses, and staff ... for the excellent care that they provided," Sanders said in the statement. "After two and a half days in the hospital, I feel great, and after taking a short time off, I look forward to getting back to work."

Sanders' senior adviser Jeff Weaver said on Wednesday that the senator had "experienced some chest discomfort," and that further tests found a blockage in an artery. Weaver added that Sanders was "conversing and in good spirits" after the treatment.

Read more: Bernie Sanders was hospitalized with chest discomfort and has cancelled all 2020 campaign events until further notice

In its Friday statement, the campaign included comments from Sanders' two physicians. The physicians said that aside from the blockage in one artery, his other arteries "were normal."

"His hospital course was uneventful with good expected progress," Dr. Arturo E. Marchand Jr. and Dr. Arjun Gururaj said in the statement. "He was discharged with instructions to follow up with his personal physician."

The 78-year-old senator, who is running for the Democratic Party's presidential nomination, initially put off all 2020 campaign events following the Wednesday hospitalization. Hours later, Sanders' campaign utilized Twitter for some campaigning in light of the medical treatment.

"None of us know when a medical emergency might affect us," Sanders said in his Twitter account. "And no one should fear going bankrupt if it occurs. Medicare for All!"

Immediately after his initial diagnosis, Sanders' Democratic colleagues on the campaign trail voiced their support.

"Bruce, Team Warren, and I are sending all our best wishes for a speedy recovery to [Sanders]," Sen. Elizabeth Warren of Massachusetts tweeted, referring to her husband Bruce Mann. "I hope to see my friend back on the campaign trail very soon."

"Thinking of [Sanders] today and wishing him a speedy recovery," Sen. Kamala Harris of California said on Twitter. "If there's one thing I know about him, he's a fighter and I look forward to seeing him on the campaign trail soon."

Sanders is the oldest presidential candidate from the Democratic and Republican parties. Former Vice President Joe Biden is the second-oldest at 76 years old, followed by former Massachusetts governor and Republican Bill Weld at 74 years old.