The best doctors of the time were called to help, but none were able to save the dying Emperor. He left behind an incomplete legacy, his work unfinished, and an heir unprepared to rule. History tends to view Alexander III as a brutish despot. His only accomplishment being to strengthen his autocratic rule at the expense of the working class and peasantry. To his credit he stabilized the Russian government and maintained peace with his European and Asian neighbors.
History is blessed with perfect hindsight.
Alexander III, however, had no such luxury. He had no idea that the causes he cared for and the means at which he obtained them would cause the eventual destruction of the way of life and government he cherished so deeply. His canceling of the planned constitution set into motion events that would eventually take Russia to the brink of annihilation. The Tsar's inability or unwillingness to prepare his son Nicholas at an early age to rule as absolute autocrat further exacerbated the future events that would sweep over his Empire. Finally, Alexander was hopelessly out of touch with the emerging realities of a modern industrialized Russia.