A dying character can be made stable by the use of the Treat Injury skill
One hour after a tended, dying character becomes stable, he or she makes a Fortitude save (DC 20) to regain consciousness. If successful, the character becomes disabled (see above). If the character remains unconscious, he or she makes the same Fortitude save every hour until he or she becomes conscious. Even while unconscious, the character recovers hit points
naturally, and he or she can return to normal activity when his or her hit points
rise to 1 or higher.