Senator Bernie Sanders, 78, had a heart attack, doctors confirm

Democratic presidential candidate Bernie Sanders underwent emergency surgery after suffering a heart attack, his campaign has confirmed.

The senator was taken to hospital on Tuesday after complaining of chest pain at a campaign event in Nevada.

Doctors operated on Mr Sanders, 78, to remove a blockage in one of his arteries.

Mr Sanders said he was feeling “great” after leaving hospital on Friday.

His doctors said “two stents were placed in a blocked coronary artery in a timely fashion”.

A stent is a small mesh tube used to help keep arteries open. Receiving stents is “a minimally invasive procedure”, typically with a short recovery time, the US National Heart, Lung and Blood Institute says.

The doctors, Arturo Marchand and Arjun Gururaj, said Mr Sanders’s other arteries were “normal”

On Friday, Mr Sanders was well enough to be discharged from Desert Springs Hospital Medical Center in Las Vegas, the doctors said.

The two doctors said that, while Mr Sanders has made “good progress”, he has been advised “to follow up with his personal physician”.

In an upbeat statement, Mr Sanders said: “After taking a short time off, I look forward to getting back to work.”

Later on Friday, the socialist told followers he was “feeling so much better” in a video filmed outside hospital.

With the Democratic presidential contest in full swing, Mr Sanders has vowed to take part in the next live televised Democratic National Committee debate, on 15 October.

As the oldest candidate in the field, Mr Sanders may face questions from his rivals about his fitness to challenge US President Donald Trump for the White House in 2020.

If Mr Sanders were to win the US presidency, he would become the oldest person to hold the office.

When the 2020 US presidential election takes place on 3 November 2020, Mr Sanders will be 79.