🧠 Aneurysmal Subarachnoid Hemorrhage (aSAH) Management
By whether the aneurysm is secured, hydrocephalus and symptomatic DCI, give nimodipine, BP control, drainage and induced-hypertension direction. Instant, browser-side.
Clinical takeaway
Early aneurysm securing prevents catastrophic rebleeding; avoid hypotension that harms cerebral perfusion.
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When to use
Management framing of aneurysmal subarachnoid hemorrhage.
How it works
Unsecured aneurysm → secure (coil/clip) early, ideally within 24 h, controlling BP with a short-acting agent beforehand. All patients → enteral nimodipine 60 mg q4h for ~21 days. Acute hydrocephalus → EVD. Symptomatic DCI → induced hypertension + normovolemia (± endovascular therapy).
Key points
- Early aneurysm securing prevents catastrophic rebleeding; avoid hypotension that harms cerebral perfusion.
- Nimodipine is the core preventive measure for delayed cerebral ischemia and improves functional outcome in all aSAH patients.
- Prophylactic hypervolemia, routine statin and IV magnesium are not recommended.
- Maintain normovolemia and electrolytes (hyponatremia common); transfer to a comprehensive stroke center / neuro-ICU.
References
Decision support for licensed clinicians only; not a substitute for clinical judgement, diagnosis or local protocols.
Worked calculation
The values below come from this tool's own example placeholders and are computed server-side with the formula shown on this page, so the arithmetic can be checked quickly. It demonstrates how to substitute values only — it is not clinical advice and not a real case.
| Ruptured aneurysm secured (clipping/coiling) | Not secured |
|---|---|
| Acute hydrocephalus / ventricular enlargement with reduced consciousness | Yes |
| Symptomatic vasospasm / delayed cerebral ischemia (DCI) | Yes |
→ActionSecure the aneurysm early + nimodipine
- Secure the aneurysm (urgent)：Treat the ruptured aneurysm as early as possible (coiling or surgical clipping), ideally within 24 h to prevent rebleeding; before treatment control hypertension with a short-acting agent to prevent rebleeding while avoiding hypotension that harms cerebral perfusion
- Nimodipine (core)：Early (within 24 h of admission) enteral nimodipine 60 mg q4h for about 21 days to prevent vasospasm and delayed cerebral ischemia (DCI) and improve functional outcome (all aSAH patients)
- Hydrocephalus：Acute hydrocephalus/ventricular enlargement with reduced consciousness: external ventricular drainage (EVD); monitor ICP
| Ruptured aneurysm secured (clipping/coiling) | Secured |
|---|---|
| Acute hydrocephalus / ventricular enlargement with reduced consciousness | No |
| Symptomatic vasospasm / delayed cerebral ischemia (DCI) | No |
→ActionNimodipine + support
- Aneurysm secured：Clipped/coiled: maintain normovolemia and adequate cerebral perfusion; perioperative and follow-up cerebrovascular imaging to monitor for re-rupture/residual
- Nimodipine (core)：Early (within 24 h of admission) enteral nimodipine 60 mg q4h for about 21 days to prevent vasospasm and delayed cerebral ischemia (DCI) and improve functional outcome (all aSAH patients)
- Avoid：Prophylactic hypervolemia is not recommended (more complications, no benefit); no routine statin or IV magnesium
Frequently asked questions
- What is Aneurysmal Subarachnoid Hemorrhage (aSAH) Management?
- By whether the aneurysm is secured, hydrocephalus and symptomatic DCI, give nimodipine, BP control, drainage and induced-hypertension direction. Instant, browser-side.
- How is Aneurysmal Subarachnoid Hemorrhage (aSAH) Management calculated? What is the core formula?
- Unsecured aneurysm → secure (coil/clip) early, ideally within 24 h, controlling BP with a short-acting agent beforehand. All patients → enteral nimodipine 60 mg q4h for ~21 days. Acute hydrocephalus → EVD. Symptomatic DCI → induced hypertension + normovolemia (± endovascular therapy).
- When is Aneurysmal Subarachnoid Hemorrhage (aSAH) Management used?
- Management framing of aneurysmal subarachnoid hemorrhage.
- What are the key clinical points for Aneurysmal Subarachnoid Hemorrhage (aSAH) Management?
- Early aneurysm securing prevents catastrophic rebleeding; avoid hypotension that harms cerebral perfusion. Nimodipine is the core preventive measure for delayed cerebral ischemia and improves functional outcome in all aSAH patients. Prophylactic hypervolemia, routine statin and IV magnesium are not recommended. Maintain normovolemia and electrolytes (hyponatremia common); transfer to a comprehensive stroke center / neuro-ICU.
- What are the limits and cautions when using Aneurysmal Subarachnoid Hemorrhage (aSAH) Management?
- For licensed clinicians and clinical researchers. Interpret results with history, investigations and local protocols; not a diagnosis or prescription, and not a substitute for multidisciplinary decision-making or local guidelines.
- How is Aneurysmal Subarachnoid Hemorrhage (aSAH) Management calculated in practice? Can you show a worked example?
- Inputs: Ruptured aneurysm secured (clipping/coiling) Not secured, Acute hydrocephalus / ventricular enlargement with reduced consciousness Yes, Symptomatic vasospasm / delayed cerebral ischemia (DCI) Yes → Result: Action Secure the aneurysm early + nimodipine（Secure the aneurysm (urgent): Treat the ruptured aneurysm as early as possible (coiling or surgical clipping), ideally within 24 h to prevent rebleeding; before treatment control hypertension with a short-acting agent to prevent rebleeding while avoiding hypotension that harms cerebral perfusion, Nimodipine (core): Early (within 24 h of admission) enteral nimodipine 60 mg q4h for about 21 days to prevent vasospasm and delayed cerebral ischemia (DCI) and improve functional outcome (all aSAH patients), Hydrocephalus: Acute hydrocephalus/ventricular enlargement with reduced consciousness: external ventricular drainage (EVD); monitor ICP） Inputs: Ruptured aneurysm secured (clipping/coiling) Secured, Acute hydrocephalus / ventricular enlargement with reduced consciousness No, Symptomatic vasospasm / delayed cerebral ischemia (DCI) No → Result: Action Nimodipine + support（Aneurysm secured: Clipped/coiled: maintain normovolemia and adequate cerebral perfusion; perioperative and follow-up cerebrovascular imaging to monitor for re-rupture/residual, Nimodipine (core): Early (within 24 h of admission) enteral nimodipine 60 mg q4h for about 21 days to prevent vasospasm and delayed cerebral ischemia (DCI) and improve functional outcome (all aSAH patients), Avoid: Prophylactic hypervolemia is not recommended (more complications, no benefit); no routine statin or IV magnesium）