Demographic and clinical characteristics and outcomes for 35 patients who underwent 41 middle meningeal artery embolization procedures for treatment of chronic subdural hematoma
| Patients (n=35) | |
| Patient characteristic | |
| Age, years, mean±SD | 68±12 |
| Male sex | 25 (71) |
| Previous trauma | 23 (66) |
| Anticoagulant/antiplatelet | 14 (40) |
| Main presenting symptom | |
| Headache | 14 (40) |
| Focal neurological deficit | 15 (43) |
| Seizures | 3 (9) |
| Incidental | 3 (9) |
| Altered mental status | 7 (20) |
| Gait instability/falls | 6 (17) |
| Surgery with adjunct embolization | 2 (6) |
| Surgery failed | 9 (26) |
| Conservative treatment failed | 6 (17) |
| cSDH embolization side | |
| Right | 16 (46) |
| Left | 13 (37) |
| Bilateral | 6 (17) |
| Acute/subacute on chronic | 21 (60) |
| Transradial | 21 (60) |
| mRS score at presentation, mean±SD | 2.0±1.4 |
| Embolization complication | 1 (3)* |
| Follow-up, days, mean±SD | 120±75 |
| Follow-up mRS score, mean±SD | 1.7±1.2 |
| mRS score >2 on follow-up | 10 (29) |
| Worse mRS score on follow-up | 1 (3) |
| Procedures (n=41) | |
| Procedure characteristic | |
| Embolic agent | |
| Onyx | 29 (71) |
| Particles and/or coils | 7 (17) |
| nBCA | 5 (12) |
| MMA branches embolized | |
| Posterior or anterior only | 12 (29) |
| Both posterior and anterior | 29 (71) |
| Embolization penetration | |
| Proximal | 16 (39) |
| Distal and proximal | 25 (61) |
| Complete resolution | 26 (63) |
| Treatment failure | 1 (2) |
Data are no. (%) of patients or procedures unless otherwise indicated.
*Left middle cerebral artery stroke was experienced by a patient with transfemoral and particle/coil treatment.
cSDH, chronic subdural hematoma; MMA, middle meningeal artery; mRS, modified Rankin Scale; nBCA, n-butyl cyanoacrylate; Onyx, ethylene vinyl alcohol copolymer.