Does it matter if we call irreversibly comatose patients "dead?" Our guest is Doyen Nguyen, OP, MD, STD. Dr. Nguyen was previously an academic hemato-pathologist and is currently a Catholic moralhttps://www.ncbi.nlm.nih.gov/pmc/articles/PMC5749302/ theologian and bioethicist. She has authored books and articles both in medicine and in moral theology/bioethics and authored a 600-page monograph that takes a critical look at brain death from a variety of perspectives.