🧠 ELAPSS Score (aneurysm growth risk)
Estimate the 3- and 5-year growth risk of an unruptured intracranial aneurysm with the ELAPSS score.
ELAPSS Score (aneurysm growth risk)
Earlier SAH history
Location
Age
Population
Maximum aneurysm diameter
Shape
When to use
Set follow-up imaging intervals and weigh intervention, using growth as a surrogate for rupture.
How it works
Points from Earlier SAH, Location, Age > 60, Population, Size and Shape (0–40). Higher totals indicate higher 3/5-year growth risk; read exact percentages from the nomogram.
Key points
- Size carries the most weight (≥ 10 mm = +22).
- Total ≥ 12 corresponds to > 10% 5-year growth risk.
- More robust combined with PHASES, wall enhancement and morphology.
References
Decision support for licensed clinicians only; not a substitute for clinical judgement, diagnosis or local protocols.