Threshold is a 1981 Canadian drama/science fiction film directed by Richard Pearce, and starring Donald Sutherland and Jeff Goldblum.

[2] Sutherland also won best actor at the 1982 Karlovy Vary International Film Festival for his performance.

[3] Threshold was filmed on location at the then newly constructed Ottawa General Hospital.

Respected cardiac surgeon Dr. Thomas Vrain performs a risky operation to provide a patient with the first artificial heart ever implanted in a human subject.

He and his colleague, research scientist Dr. Aldo Gehring, consider the risks and weigh the odds as time runs out for Carol Severance, the patient.