The five-minute observation is the clinical practice in the protocol of donation after circulatory death: after observed asystole, a no-touch period of at least five minutes is maintained, during which no measure is undertaken on the donor. Only afterward is death declared and the procurement of organs begun.
Empirical Grounding
The interval of five minutes is empirically supported by studies on autoresuscitation. The longest case of spontaneous return of cardiocirculatory function documented in the literature stands at 4 minutes 20 seconds (Dhanani et al., NEJM multicenter study). Five minutes therefore suffice empirically to exclude spontaneous return.
Substance-Ontological Point
The five-minute rule turns asystole into a permanence, not an irreversibility: it excludes the spontaneous or interventional return of circulation — not because that would be anatomically impossible, but because no measure is undertaken any longer.
Thus the observation interval hangs on a normative stipulation (no further intervention), not on an ontological impossibility. From the substance-ontological position it follows: the five-minute rule is a necessary but not sufficient condition for sure death (= the separation of body and spiritual substance). Precisely for this reason the precautionary principle demands the stricter condition of irreversibility.
Ontological Classification
Superordinate concept: state of affairs (clinical practice)
Ontological relations:
- condition of: the practice of donation after circulatory death
- empirically grounded by: autoresuscitation studies
- normatively flanked by: precautionary principle
- turns asystole into: permanence (not irreversibility)
Chapter assignment: Chapter 4: What Is Human Personhood? (German)
Sources
- Hornby, Karen; Hornby, Laura; Shemie, Sam D. (2010): A systematic review of autoresuscitation after cardiac arrest. Critical Care Medicine 38(5): 1246—1253.
- Hornby, Laura; Dhanani, Sonny; Shemie, Sam D. (2018): Update of a systematic review of autoresuscitation after cardiac arrest. Critical Care Medicine 46(3): e268—e272.
- Zorko, David J.; Shemie, Sam D.; Hornby, Laura; et al. (2023): Autoresuscitation after circulatory arrest: an updated systematic review. Canadian Journal of Anesthesia 70(4): 699—712.
- Bernat, James L. et al. (2010): The circulatory-respiratory determination of death in organ donation. Critical Care Medicine 38(3): 963—970.
See also
- Autoresuscitation
- Asystole
- Permanence and Irreversibility
- Donation after Circulatory Death
- Dead Donor Rule
- Precautionary Principle
- Benedict XVI
Connections to related concepts
Generated by querying the Personhood ontology.