RT Journal Article SR Electronic T1 Double effect: a useful rule that alone cannot justify hastening death JF Journal of Medical Ethics JO J Med Ethics FD BMJ Publishing Group Ltd and Institute of Medical Ethics SP 437 OP 440 DO 10.1136/jme.2010.041160 VO 37 IS 7 A1 J Andrew Billings YR 2011 UL http://jme.bmj.com/content/37/7/437.abstract AB The rule of double effect is regularly invoked in ethical discussions about palliative sedation, terminal extubation and other clinical acts that may be viewed as hastening death for imminently dying patients. Unfortunately, the literature tends to employ this useful principle in a fashion suggesting that it offers the final word on the moral acceptability of such medical procedures. In fact, the rule cannot be applied appropriately without invoking moral theories that are not explicit in the rule itself. Four tenets of the rule each require their own ethical justification. A variety of moral theories are relevant to making judgements in a pluralistic society. Much of the rich moral conversation germane to the rule has been reflected in arguments about physician-asssisted suicide and voluntary active euthanasia, but the rule itself has limited relevance to these debates, and requires its own moral justifications when applied to other practices that might hasten death.