Sasdren was a male S'ti'ach in the 24th century. In 2381 he became one of the many victims of the Borg Invasion and subsequently became a resident of the iy'Dewra'ni refugee camp on Pacifica. The Borg Invasion that had made him a refugee so traumatised Sasdren that he attempted suicide by slitting his wrists with his claws. Sasdren did not die, and was taken in for treatment by the camp's Mark III EMH. As the EMH was programmed before the Federation had any significant contact with the S'ti'ach he improvised a treatment of polyadrenaline, which was progressively less effective as time went on. The EMH responded by continually upping the dosage.