Course
Posterior communicating (PCoA) aneurysm — CN III palsy warning sign, CTA/DSA detection, and urgency (Advanced)
Advanced course: a PCoA aneurysm can compress the 3rd cranial nerve and may present with new drooping eyelid and pupil changes. Learn why this is urgent, and how CTA/MRA/DSA and CT rule out hemorrhage
FoundationsCaregiver, SurvivorAdvanced55 minPlain (6–8)
Educational only
Educational only — not medical advice.
What you'll learn
- Recognize CN III palsy (ptosis + eye movement limits) as a possible aneurysm emergency
- Understand why pupil involvement is a key red flag (high-level)
- Understand imaging pathway: CT for hemorrhage, CTA/MRA for aneurysm screening, DSA for detail
- Know what questions to ask about rupture risk and next steps
Practice check
Check your understanding
A few untimed questions. Pick an answer to see instant feedback, then continue to the next lesson.
0 of 3 answered