Incidence of subarachnoid hemorrhage from aneurysmal rupture in India.

Incidence of subarachnoid hemorrhage from aneurysmal rupture is low in India when compared with that in Western world and Japan. A review of aneurysms seen in eight institutions of the country in 1985 and 1986 has shown a very small incidence of aneurysms. A study of circle of Willis in 1021 consecutive autopsies has also shown only two aneurysms on middle cerebral artery, the incidence being only 0.2%. For last 2-3 years, after an increasing awareness of its entity amongst the physicians and the population, only 300-350 aneurysms were seen in the cities of Bombay and Delhi with a population of 13 and 8 million, respectively.