People v. Eulo, 63 N.Y.2d 341 (N.Y. 1984), 472 N.E.2d 286, 482 N.Y.S.2d 436
People v. Eulo is a landmark New York Court of Appeals decision that squarely addressed how the law defines death in the era of modern medical technology.
Absent a specific statute, may death under New York law be determined by irreversible cessation of all functions of the entire brain (brain death), and if so, do subsequent medical actions—such as withdrawal of life support or organ procurement—break the chain of causation for homicide liability?
At common law in New York, death occurs upon either (1) irreversible cessation of circulatory and respiratory functions, or (2) irreversible cessation of all functions of the entire brain, including the brain stem, as determined in accordance with accepted medical standards. The determination of death is a medical decision made by physicians applying those standards and may support death certification and legal consequences. When a defendant's conduct renders a victim brain dead, subsequent medical steps such as withdrawal of life support or organ procurement from the brain-dead body neither constitute homicide nor break the causal chain for purposes of the defendant's criminal liability.
Yes. The Court of Appeals held that brain death, determined in accordance with accepted medical standards, is legal death under New York common law. It further held that when the defendant's acts cause brain death, subsequent medical actions, including withdrawal of life support and organ procurement, do not sever causation and do not shift criminal liability from the defendant to physicians.
People v. Eulo is a cornerstone case at the intersection of criminal law, evidence, and bioethics. It modernizes New York's common-law definition of death by embracing the brain death standard in tandem with the traditional cardiopulmonary test, harmonizing the law with medical realities and the UDDA's approach. For criminal law, it clarifies causation where life support and transplantation are involved, ensuring that defendants who inflict lethal injuries cannot evade liability based on later medical decisions. For health law, it affirms that the determination of death is a medical judgment guided by accepted standards, supporting lawful withdrawal of life-sustaining treatment and organ procurement practices. The decision influenced subsequent New York legislation codifying death determination and remains a frequently cited authority in courses on criminal law, health law, and bioethics.