What are the criteria used to determine if someone qualifies for a heart transplant?

General criteria: Life expectancy<1 year without it, exhaustion of other therapies, the absence of other life threatening conditions, absence of active drug/alcohol abuse and smoking, presence of supportive family members. Age generally not a rigid criteria.

End stage heat dis.: The most essential, indication for heart transplantation is end stage heart disease not remediable by any other methods like medications heart devices etc , in good health, and have reasonable life expectancy.