In a tight race to the wall, the 20-year-old captured the gold in 59.31sec for her third medal of the Rio 2016 Games.

Last week, she set a world record pace to claim victory in the women’s 50m freestyle S10 and followed that up with a silver medal in the women’s 200m individual medley SM10.

Pascoe, who beat Rivard by the smallest of margins for gold at last year’s World Championships, took silver in 59.85, while France’s Elodie Lorandi completed the podium in 1:01.13.

Despite her win, Rivard admitted she was "a little bit disappointed" with her performance having finished 0.14 seconds off her world record.

"It was my world record and I wanted to beat it," she said immediately after the race.

"I died in the last few metres.

"But I am sure that [disappointment] will go when I am on the podium."

Today’s final was Pascoe’s last race of a third Paralympic Games, which has seen the 23-year-old claim five medals - three golds and two silvers - and a world record in the women’s 200m individual medley SM10.

There was also a Paralympic record today for Ukraine’s Yelyzaveta Mereshko, who triumphed in the women’s 400m freestyle S6.

In what had been billed as a close clash, the world champion and world record holder was well ahead of her British rival Ellie Simmonds and extended her lead after every turn to win in 5:17.01.

China’s Song Lingling earned the silver in 5:21.37, and Simmonds came away the bronze in 5:24.87.

"I just didn’t have anything at all tonight," said Simmonds, who set a world record in winning the women’s 200m individual medley SM6 yesterday evening.

Mereshko’s compatriot Ievgenii Bogodaiko lowered his own world record in the men’s 200m individual medley SM7, with the reigning world and Paralympic champion winning in 2:30.72.

The United States' Rudy Garcia-Tolson set an American record of 2:33.87 for the silver medal, while Australia’s Matthew Levy also set a regional record by finishing third in 2:36.99.

Bogodaiko was one of four swimmers to break a world record this evening, with China’s Zhang Xiaotong another of them in winning the women’s 100m breaststroke SB11 in 1:23.02.

The Netherlands' Liesette Bruinsma finished with the silver in 1:25.81, while reigning world champion Maja Reichard of Sweden took the third spot in 1:26.60.

After setting an Asian record earlier in the morning, China’s Zhou Cong followed up with a world record in the men’s 100m backstroke S8.

Zhou won in 1:02.90 with Britain’s Oliver Hynd, the bronze medallist from London 2012 and the World Championships, capturing silver in 1:04.46.

The US’s Robert Griswold came away with bronze in 1:04.68 having earlier set a Paralympic record in the heats.

The other world record breaker was Paralympic debutant Huang Wenpan of China as he reset the global mark twice to win the men’s 50m freestyle S3 in 39.24.

World champion Dmytro Vynohradets of Ukraine took silver in 41.41, setting a European record, and China’s Li Hanhua joined his team-mate on the podium with a time of 42.18.

For a full set of results, check out our live blog here.