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Table 2: Baseline traits and volumetric differences among PVH scores on MRI in patients achieving complete reperfusion after mechanical thrombectomy (n = 126)
PVH 0 PVH 1 PVH 2 PVH 3 P Value
Age (mean) (SD) (yr) 59.0 (16.7) 68.0 (12.2) 76.6 (7.7) 72.9 (15.3) <.001
Baseline NIHSS score (median) (IQR) 16 (11–19) 16 (11–20) 18 (8–20) 17 (13–21) .921
Time from symptom onset to CTP study (median) (IQR) (min) 154 (89–233) 168 (92–296) 135 (64–263) 185 (73–385) .871
CBF (median) (IQR) (mL/100 g/min) 2.4 (2.2–2.7) 2.4 (2.1–2.6) 2.5 (2.2–2.7) 2.4 (2.2–2.8) .558
CBV (median) (IQR) (mL/100 g/min) 25.4 (22.9–28.1) 23.9 (21.0–26.1) 23.1 (19.4–26.9) 22.6 (18.0–28.0) .205
MTT (median) (IQR) (sec) 5.7 (5.3–6.3) 6.0 (5.4–6.3) 6.2 (5.8–6.7) 6.4 (6.3–7.1) .021
Collateral status (median) (IQR) 2 (2–3) 2 (2–3) 2 (2–3) 2 (1–2) .174
NVT (median) (IQR) (mL) 15.4 (7.3–32.0) 16.0 (7.8–36.3) 15.4 (3.5–31.4) 23.1 (15.1–33.9) .411
FIV (median) (IQR) (mL) 15.0 (3.5–32.4) 12.8 (5.3–19.8) 14.3 (2.8–40.0) 13.6 (1.3–25.8) .826
Volumetric bias^{^a} (median) (IQR) (mL) using Fazekas score on MRI 4.2 (−18.5–9.8) 1.6 (−3.1–16.4) 0.0 (−18.7–16.0) 12.5 (0.9–30.4) .205
Volumetric bias^{^a} (median) (IQR) (mL) using Fazekas score on NCCT 2.6 (−12.1–11.6) 2.3 (−3.5–13.2) 0.5 (−18.7–14.5) 11.4 (−1.1–31.4) .557
↵a Volumetric bias was defined as NVT (using the rCBF <30% cutoff)-FIV.