Cardiopulmonary Bypass - A machine that does the work of the heart and lungs during a heart operation. The blood is detoured through a machine that supplies it with oxygen. Cerebral Blood Flow - Radiography done to detect blood flow to the brain. Clinical Exam - Very important aspect in the determination of brain death that encompasses the observation of neural responses to a variety of external stimuli. Cold Calorics - A specific clinical test where ice water is irrigated into the ear canals.
Any eye movement excludes brain death.
A coma is not the same as brain death because there is some brain function present. Cornea - The clear transparent covering of the eye. Corneal Reflex - A specific clinical test where a piece of cotton or a tissue is used to touch the cornea. Eyelid movement excludes brain death. Cross Clamp - Placement of a surgical clamp on the aorta to stop the circulation of blood to various organs thereby allowing for the infusion of cold solution into the organs to preserve them for the transportation and subsequent transplantation of organs.