How did the Karen Ann Quinlan case affect hospital ethics committees?

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Marble portrait bust of Hippocrates atop a tall rectangular base inscribed with an epigram in Greek, displayed against a black background. — Bioethics A Roman bust of Hippocrates, copied from a Greek original, c. 3rd century bce; in the collection of the Antichità di Ostia, Italy.

The landmark 1976 case of Karen Ann Quinlan significantly influenced the role of hospital ethics committees by providing a mechanism to address physician concerns regarding legal liability.

In the case, the New Jersey Supreme Court ruled that parents could exercise a patient's right to refuse life-sustaining treatment. To reassure physicians who feared potential civil or criminal prosecution for withdrawing a mechanical ventilator, the court decreed that if a hospital’s ethics committee concurred with the prognosis of a permanent coma, the removal of the ventilator could proceed with the committee providing legal immunity to all involved parties.1

While this specific model of granting legal immunity was not widely adopted by other courts, the case served as a catalyst for the establishment of ethics committees across North America, Europe, and Australia. Today, these committees primarily function to educate hospital staff on ethical conduct and complex matters such as the withholding or withdrawing of medical treatment, rather than serving as legal shields.1