• Elizabeth A Cahill, David L Tirschwell, and Sandeep Khot.
• Department of Neurology, Harborview Medical Center, Seattle, WA, USA.
• Neurohospitalist. 2014 Jul 1;4(3):144-52.

AbstractPrognostication of patients who remain comatose following successful resuscitation after cardiac arrest has long posed a challenge for the consulting neurologist. With increasing rates of early defibrillation, out-of-hospital cardiopulmonary resuscitation, and expanding use of therapeutic hypothermia, prognostication in hypoxic-ischemic encephalopathy has become an increasingly common consult for neurologists. Much of the data we previously relied upon for prognostication were taken from patients who were not treated with therapeutic hypothermia. In this review, we examine useful prognostic tools and markers, including the physical examination, evaluation of myoclonus, electroencephalogram monitoring, somatosensory-evoked potentials, biochemical markers of neuronal injury, and neuroimaging. Neurologists must avoid overly pessimistic prognostic statements regarding survival, awakening from coma, or future quality of life, as such statements may unduly influence decisions regarding the continuation of life-sustaining treatment. Conversely, continuation of aggressive medical management in a patient without any hope of awakening should also be avoided. Thus, an understanding of the utility and the limitations of these prognostic tools in the era of therapeutic hypothermia is essential.

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