When unexpected circumstances arise, the end of life for a loved one nears, or you are making preparations, there can be some confusion or questions about the moral implications of decisions regarding healthcare or proper proceedings in the Catholic Church. If you find yourself in this place, please do not hesitate to contact your pastor. They are happy to pray and walk you through the tough decision-making process. 
Resources a pastor may utilize or reference are listed below. 

Established in 1972, the National Catholic Bioethics Center (NCBC) "conducts research, consulatation, publishing and education to promote human dignity in health care and the life sciences, and derives its mesage directly from the teachings of the Catholic Church."  The NCBC website provides resources that include seminars, individual consultation, multiple educational documents, answers to frequently asked questions etc. One of their most useful resources is their EMERGENCY BIOETHICS LINE (215-877-2660) with a 24/7 ethicist available to answer your questions.