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[A prospective study of subarachnoid hemorrhage in Navarra]
J Guridi1, E Portillo, J Azcona
1Departamento de Neurocirugía, Hospital de Navarra, Pamplona.
Insights
This study analyzed subarachnoid hemorrhage (SAH) cases in Navarra. A significant number of SAH patients had no clear cause found through angiography, highlighting a diagnostic challenge.
Area of Science:
- Neurology
- Radiology
- Public Health
Background:
- Subarachnoid hemorrhage (SAH) is a critical neurological condition.
- Understanding the causes and outcomes of SAH is vital for patient management.
- Previous studies have explored SAH etiology, but regional variations and undiagnosed causes warrant further investigation.
Purpose of the Study:
- To evaluate the incidence and characteristics of subarachnoid hemorrhage (SAH) in Navarra over a three-year period.
- To analyze patient demographics, etiological findings, and outcomes based on diagnostic workup.
- To investigate the correlation between computed tomography findings and patient prognosis.
Main Methods:
- Retrospective analysis of 95 patients diagnosed with SAH in Navarra.
- Classification of patients based on angiographic findings: intracranial aneurysm, arteriovenous malformation (AVM), or negative/not performed angiography.
- Assessment of computed tomography (CT) results and correlation with 6-month patient outcomes.
Main Results:
- The study included 95 patients with a mean age of 51.47 years.
- Intracranial aneurysms were identified in 34 patients (mean age 50.23 years), with a female predominance.
- Arteriovenous malformations (AVMs) were found in 8 patients (mean age 33.7 years). Angiography was negative in 35 patients and not performed in 18.
- Computed tomography was positive in 40% of cases, and a correlation was observed between cisternal blood volume and poor 6-month outcomes.
Conclusions:
- A notable proportion of SAH cases in Navarra lacked definitive etiological findings upon angiography.
- The amount of blood detected on CT scans correlated with poorer patient outcomes.
- Further research is needed to elucidate the causes of angiographically negative SAH and improve diagnostic strategies.
Abstract:
The authors evaluate subarachnoid hemorrhage (SAH) in the autonomous community of Navarra during 3 years. Ninety-five patients were evaluated (mean age (MA) 51.47 years). They were divided in groups depending on angiographic findings. Thirty-four had an intracranial aneurysm (MA 5%.23 years) with a female preponderance (66.7% vs 33.3%). Eight patients had an arteriovenous malformation (AVM) (MA 33.7 years); in 35 patients the angiographic study was negative (MA 44 years) and in 18 angiography was not carried out (MA 66.66 years). Computed tomography was positive in 40% of patients and there was a correlation between the amount of blood in the cisterns and poor outcome of patients after 6 months. In the discussion, the authors emphasize the high incidence of SAH without angiographic findings.