The Cushing reflex is a physiological response of the nervous system to an acute increase in intracranial pressure (ICP), resulting in the Cushing triad of increased pulse pressure (rising systolic pressure, falling diastolic pressure), bradycardia, and irregular breathing[^2]. The reflex serves to maintain cerebral perfusion in the setting of elevated intracranial pressure.
Historical background
The association was described in 1901 by the American neurosurgeon Harvey Cushing. However, similar experiments had already been conducted decades earlier by other scientists, including Paul Cramer, Ernst von Bergmann, Ernst von Leyden, Georg Althann, Friedrich Jolly, Friedrich Pagenstecher, Henri Duret, Bernard Naunyn, and Julius Schreiber. Cushing initially failed to cite the work of his predecessors. Nevertheless, Cushing investigated the brain’s response to compression more thoroughly than earlier researchers and provided a better explanation for the pathophysiology of the phenomenon named after him[^1].