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Three hundred and sixteen patients who suffered a subarachnoid haemorrhage of unknown cause were followed up by questionnaire after 2 to 23 years,the average interval being 10 years.Two hundred and fifty one(79.5%)are known to be alive,49(15.5%)had died,and 16(5%)patients were untraceable.The cumulative survival for the whole group after 22 years was 69%,the expected survival being 89%.The certified cause of death of 30 patients was from diseases of the circulatory system,mainly myocardial infarction and cerebrovascular disease,the expected number being 21.8.The results of this survey show a reduced life expectancy for both males and females and suggest that a more guarded view should be taken than is presently the case about the long term prognosis of these patients. |
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