Table 2.
Procedure and outcome related characteristics encountered in 27 chronic subdural hematomas treated with upfront middle meningeal artery embolization.
| Variable | Lesions with a midline shift less than 5 mm | Lesions with a midline shift more than 5 mm |
|---|---|---|
| Number (%) (n=15) | Number (%) (n=12) | |
| Procedure related complications | 0 (0%) | 0 (0%) |
| Rescue surgery | 2 (13%) | 1 (8%) |
| Length of stay post-procedurea | 2 [2–9] | 6 [2–8] |
| First improvement in thickness of hematoma, in days, median [IQR] | 23 [13–46] | 6 [3–11] |
| Hematoma thickness Improvement within 2 weeksb | 8 (53%) | 9 (75%) |
| First follow-up, in days, median [IQR] | 14 [11–23] | 9 [6–21] |
| Time-to 50% decrease in thickness, in days, median [IQR] | 50 [46–67] | 43 [28–51] |
| Complete resolution at last follow-up | 11 (73%) | 6 (50%) |
| Hematoma thickness at last follow-up, in mm, median [IQR] | 8 [3–12] | 4 [0–15] |
| Increased hematoma thickness during follow-up | 2 (13%) | 1 (8%) |
| Increased midline shift during follow-upa | 1 (9%) | 1 (8%) |
| Time-to-resolution of midline shift, in days, median [IQR]a | 46 [9–58] | 51 [43–70] |
| Midline shift at last follow-up, in mm, median [range]a | 0.13 ± 0.5 | 1.75 ± 3.2 |
| Modified Rankin score at last follow-up, median, [IQR] | 0 [0–1] | 0 [0–1] |
| Favorable modified Rankin score at last follow-upc | 13 (87%) | 10 (83%) |
| Follow-up, in months, median [IQR] | 5 [2–6] | 2 [1–4] |
Patients were grouped based on the degree of midline shift prior to intervention.
aPer-patient variable
b Missing data in 1 patient from each group.
cA favorable mRS status was considered in patients with mRS from 0–2.