Journal Article
Research Support, Non-U.S. Gov't
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Long-term excess mortality in pediatric patients with cerebral aneurysms.

BACKGROUND AND PURPOSE: Knowledge of the long-term excess mortality in pediatric aneurysm patients is lacking. The aim of this study was to assess the long-term excess mortality of 102 pediatric patients with cerebral aneurysm treated at the department of neurosurgery at Helsinki University Central Hospital between 1937 and 2009.

METHODS: Patients were followed from diagnosis until death or the end of the year 2010. Relative survival ratio provided the measure of excess mortality in these patients compared with mortality of the general Finnish population matched by age, sex, and calendar time.

RESULTS: A majority of the patients (n=89) presented with subarachnoid hemorrhage. Aneurysms (n=118) were treated operatively (n=79), endovascularly (n=1), or conservatively (n=36). The mean follow-up time was 26.8 years (range, 0-55.6 years). By the end of follow-up, 34 of the 102 patients had died; 26 of these deaths (76%) were aneurysm-related. There was overall excess mortality of 10% (cumulative relative survival ratio, 0.90; 95% CI, 0.80-0.96) and 19% (cumulative relative survival ratio, 0.81; 95% CI, 0.66-0.91) at 20 and 40 years after the diagnosis among the 1-year subarachnoid hemorrhage survivors, respectively. The excess mortality was particularly high in boys. There was no long-term excess mortality among patients with unruptured aneurysms. Aneurysm-related deaths included rebleedings from open or partially occluded aneurysms, epileptic seizures, de novo and recurrent aneurysms, or sequelae of subarachnoid hemorrhage.

CONCLUSIONS: There is long-term excess mortality in pediatric patients with aneurysm even decades after successful treatment of a ruptured aneurysm, especially among boys. The excess mortality is mainly aneurysm-related.

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