In medicine, death is defined as the heart stopping for more than several minutes.

The claim asserts that death is defined in medicine specifically as the heart stopping for more than several minutes. Modern medical standards and legal frameworks rely primarily on neurological criteria (brain death) or total irreversible cessation of brain and circulatory functions, rather than a simple duration of cardiac arrest (especially given modern resuscitation and ECMO). Papers 1, 4, and 10 all emphasize the complexity of death determination, brain death criteria, and the inadequacy of relying solely on permanent organ function loss. Therefore, the claim is refuted.