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Smoking and subarachnoid haemorrhage: a case control study.
K M Morris1, M D Shaw, P M Foy
1Mersey Regional Department of Medical and Surgical Neurology, Walton Hospital, Liverpool, UK.
British Journal of Neurosurgery
|January 1, 1992
Summary
Smoking doubles the risk of developing aneurysmal subarachnoid haemorrhage (SAH). While outcomes were similar, smokers experienced more postoperative pulmonary complications, highlighting a significant health risk associated with smoking.
Area of Science:
- Neurology
- Epidemiology
- Public Health
Background:
- Previous studies suggest a link between smoking and increased risk of aneurysmal subarachnoid haemorrhage (SAH).
- Understanding this association is crucial for public health initiatives and patient risk assessment.
Purpose of the Study:
- To prospectively investigate the association between smoking and the risk of spontaneous aneurysmal SAH.
- To compare the outcomes and complications of SAH in smokers versus non-smokers.
Main Methods:
- A prospective study of 217 patients with spontaneous SAH presenting to a regional neurosurgical unit in 1990.
- Comparison of smoking habits between SAH patients and age, sex, and occupation-matched controls.
- Chi-square tests were used for statistical significance testing.
Main Results:
- Smokers had double the relative risk of spontaneous aneurysmal SAH compared to non-smokers (p < 0.001).
- No significant difference in management outcomes at 6 months post-SAH between smokers and non-smokers (p = 0.43).
- Smokers experienced a higher incidence of postoperative pulmonary complications requiring ventilation.
Conclusions:
- Smoking is a significant risk factor for developing aneurysmal subarachnoid haemorrhage.
- While SAH management outcomes may not differ, smoking increases the likelihood of postoperative pulmonary complications.