International variations in application of the best-interest standard across the age spectrum

Ethically and legally, assertions that resuscitation is in a patient's best interest should be inversely correlated with willingness to forego intensive care (and accept comfort care) at the surrogate's request. Previous single country studies have demonstrated a relative devaluation of neonates when compared with other critically ill patients.

In this international study, physicians in Argentina, Australia, Canada, Ireland, The Netherlands, Norway and the United States were presented with eight hypothetical vignettes of incompetent critically ill patients of different ages. They were asked to make assessments about best interest, respect for surrogate autonomy and to rank the patients in a triage scenario.

In total, 2237 physicians responded (average response rate 61%). In all countries and scenarios, participants did not accept to withhold resuscitation if they estimated it was in the patient's best interest, except for scenarios involving neonates. Young children (other than neonates) were given high priority for resuscitation, regardless of existing disability. For neonates, surrogate autonomy outweighed assessment of best interest. In all countries, a 2-month-old-infant with meningitis and a multiply disabled 7-year old were resuscitated first in the triage scenario, with more variable ranking of the two neonates, which were ranked below patients with considerably worse prognosis.

The value placed on the life of newborns is less than that expected according to predicted clinical outcomes and current legal and ethical theory relative to best interests. Value assessments on the basis of age, disability and prognosis appear to transcend culture, politics and religion in this domain.