The influence of diabetes mellitus on outcome from subarachnoid hemorrhage
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Updated: Oct 30, 2026

Double Direct Injection of Blood into the Cisterna Magna as a Model of Subarachnoid Hemorrhage
Published on: August 30, 2020
R K Simpson1, C F Contant, D K Fischer
1Department of Neurosurgery, Baylor College of Medicine, Houston, Texas 77030.
Insights
Diabetes mellitus (DM) is a risk factor for subarachnoid hemorrhage (SAH). However, this study found that pre-existing DM did not significantly impact SAH patient outcomes when considering other health factors.
Area of Science:
- Neurology
- Endocrinology
- Public Health
Background:
- Diabetes mellitus (DM) is recognized as a risk factor for subarachnoid hemorrhage (SAH).
- The impact of DM on SAH patient outcomes requires further investigation.
Purpose of the Study:
- To evaluate the influence of pre-existing diabetes mellitus on outcomes in patients with subarachnoid hemorrhage.
Main Methods:
- Retrospective review of 150 patients diagnosed with SAH.
- Analysis included 22 patients with DM and 128 patients without DM.
- Outcomes were assessed in conjunction with other chronic diseases and epidemiological factors.
Main Results:
- Pre-existing diabetes mellitus was observed in 22 out of 150 SAH patients.
- No statistically significant difference in outcomes was found between SAH patients with and without DM.
- The influence of DM on outcomes was not significant when controlling for other comorbidities.
Conclusions:
- Pre-existing diabetes mellitus does not appear to be a significant independent predictor of outcome in subarachnoid hemorrhage.
- Further research may be warranted to explore potential confounding factors or specific subgroups.
Abstract:
Diabetes mellitus (DM) has been shown to be a risk factor for subarachnoid hemorrhage (SAH). However, the influence of this disease on outcome from SAH has not been adequately studied. We retrospectively reviewed 150 patients with SAH, including 22 with and 128 without DM. Our results indicate that pre-existing DM does not significantly influence outcome from SAH when examined in conjunction with other chronic diseases and epidemiological factors.
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