Mary Fickett, who for decades played nurse Ruth Martin on “All My Children” and in 1973 won the first Emmy Award given to an actress in a daytime drama after her character made an impassioned anti-Vietnam War speech, has died. She was 83.

Fickett, who also acted in theater, film and prime-time television, died Thursday at her home in Callao, Va.

ABC spokeswoman Jori Petersen confirmed Fickett’s death, but the cause was not given.

“All My Children,” created by Agnes Nixon, first aired Jan. 5, 1970, and soon became known for its socially relevant story lines. Nixon, who was also the show’s head writer, was committed to dealing with serious subject matter, including child abuse, domestic violence, drug and alcohol addiction, the AIDS epidemic, abortion, homosexuality, racism and eating disorders.

When Ruth Martin’s adopted son Phil Brent (played by Richard Hatch) was sent to Vietnam, she expressed her misgivings about the war and her concerns for his safety. Fickett’s performance resulted in an Emmy in 1973, the first year the award was given to individual actors in daytime dramas.

Fickett was one of the ABC soap opera’s original cast members, along with Susan Lucci as Erica Kane, Ruth Warrick as Phoebe Tyler and Ray MacDonnell as Dr. Joe Martin, who became Fickett’s on-screen husband. Fickett appeared on the show from 1970 to 1995 and again from 1998 to 2000 (actress Lee Meriwether took over the role of Ruth Martin in her absence).

Although the serial’s plot lines followed the ups and downs of its ever-evolving cast in fictional Pine Valley, Pa., some characters remained familiar touchstones for its loyal following.

“There has to be some core around which other people disintegrate and come together again,” Fickett said in a 1995 Los Angeles Times story. “If the place were in chaos all the time, you wouldn’t have some place to bounce off of. They’ve had problems — Ruth was raped, and she had an affair — but viewers want to believe that there is a core.”