Table 1.

Stratification of decision-making at the limit of viability (Berger 2011)

Zone	Intensive care	Burden of intensive care	Comment
A	Not indicated	Not acceptable	Parents cannot insist on an unreasaonable intervention
B	Not recommended, but acceptable in individual cases	Likely not to be acceptable	Parental authority should be respected—zone of parental discretion
C	Conditionally recommended, but non-initiation acceptable in individual cases	Likely to be acceptable	Parental authority should be respected—zone of parental discretion
D	Recommended	Acceptable	Parents cannot reject interventions that are in the infant’s best interest