Recent studies using functional magnetic resonance imaging of patients in a vegetative state have raised the possibility that such patients retain some degree of consciousness. In this paper, the ethical implications of such findings are outlined, in particular in relation to decisions about withdrawing life-sustaining treatment. It is sometimes assumed that if there is evidence of consciousness, treatment should not be withdrawn. But, paradoxically, the discovery of consciousness in very severely brain-damaged patients may provide more reason to let them die. Although functional neuroimaging is likely to play an increasing role in the assessment of patients in a vegetative state, caution is needed in the interpretation of neuroimaging findings.
This paper assesses the possible effects on decision making about the withdrawal of life-sustaining treatment if fMRI suggests that a patient in VS has some level of consciousness. It focuses on the principles set out in the Mental Capacity Act 2005 (UK) (which has come into force since the case mentioned above),5 the Mental Capacity Act Code of Practice (CoP)6 and the common law.
A Canadian man who was believed to have been in a vegetative state for more than a decade, has been able to tell scientists that he is not in any pain. It's the first time an uncommunicative, severely brain-injured patient has been able to give answers clinically relevant to their care. Scott Routley, 39, was asked questions while having his brain activity scanned in an fMRI machine. His doctor says the discovery means medical textbooks will need rewriting. Vegetative patients emerge from a coma into a condition where they have periods awake, with their eyes open, but have no perception of themselves or the outside world.
B. Han, R. Zhou, C. Xia, und X. Zhuang. Proceedings of the National Academy of Sciences of the United States of America, 114 (32):
E6678--E6685(August 2017)