Anita Alvarez of United States is carried on stretcher after collapsing during the solo free final of the artistic swimming at the 19th FINA World Championships in Budapest, Hungary on June 22, 2022. (ANNA SZILAGYI / AP)

American artistic swimmer Anita Alvarez was in danger of drowning after losing consciousness in the pool at the world championships in Budapest on Wednesday before being rescued by her coach Andrea Fuentes.

Spaniard Fuentes, a four-time Olympic medallist in synchronized swimming, jumped into the pool after she saw Alvarez sink to the bottom at the end of her solo free final routine.

A member of Team USA (left) recovers USA's Anita Alvarez (center), from the bottom of the pool during an incendent in the women's solo free artistic swimming finals, during the Budapest 2022 World Aquatics Championships at the Alfred Hajos Swimming Complex in Budapest on June 22, 2022. (PETER KOHALMI / AFP)

It was the second time coach Andrea Fuentes has had to rescue Anita Alvarez after she leapt into the pool during an Olympic qualification event last year and pulled her to safety along with the American's swim partner Lindi Schroeder

She was given medical attention beside the pool before being taken away on a stretcher.

It was the second time Fuentes has had to rescue Alvarez after she leapt into the pool during an Olympic qualification event last year and pulled her to safety along with the American's swim partner Lindi Schroeder.

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"Anita is much better, she is already at her best. It was a good scare, to be honest," Fuentes told Spanish newspaper Marca on Wednesday.

"I jumped into the water again because I saw that no one, no lifeguard, was jumping in. I got a little scared because she wasn't breathing, but now she's fine. She has to rest."

Fans and teammates react after Anita Alvarez of United States collapsed during the solo free final of the artistic swimming at the 19th FINA World Championships in Budapest, Hungary on June 22, 2022. (ANNA SZILAGYI / AP)

In a statement on the US Artistic Swimming Instagram page, Fuentes said 25-year-old Alvarez would be assessed by doctors on Thursday before a decision was made on her participation in Friday's team event.