Why the study?
Did surgical and overall management outcomes for aneurysmal subarachnoid hemorrhage improve between 1980-1989 and 1990-1998?
Population
358 patients with aneurysmal subarachnoid hemorrhage (SAH) treated in Izumo City, Japan
Comparison
Treatment during the 9-year period 1990-1998 vs Treatment during the 10-year period 1980-1989
Design
Cohort
Follow-up
6 months and 2 years
Authors
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Improved surgical outcomes in aneurysmal subarachnoid hemorrhage have not improved overall management; leaves open whether rising patient risk offsets population gains.
Did surgical and overall management outcomes for aneurysmal subarachnoid hemorrhage improve between 1980-1989 and 1990-1998?
While surgical case fatality rates for aneurysmal subarachnoid hemorrhage decreased over time, overall management outcomes remained unchanged due to an increasing proportion of elderly and high-risk patients.
Tetsuji Inagawa (2004) studied this question.