Clinicians have an ethical obligation not to provide futile care. To practice accordingly, we must clearly understand the nature and forms of futility. Armed with this understanding, our discussions with family and surrogates in the ICU should fundamentally comprise 1) eliciting the patient's values and goals, 2) communicating which interventions serve those values and goals and which do not, and 3) offering only those interventions whose likely outcomes are in line with said values and goals.
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Kopar et al. (2022) studied this question.