Table 2.
PI from the first transcranial Doppler study on ECMO
| PI | VA-ECMO (n = 95 studies), n (%) | VA-ECMO % abnormal (≥ 1.2), n (%) | PI, median (IQR) | VV-ECMO (n = 40 studies), n (%) | VV-ECMO % abnormal (≥ 1.2), n (%) | PI, median (IQR) | p value (PI) |
|---|---|---|---|---|---|---|---|
| Right | |||||||
| MCA M1 | 47 (49.5) | 22 (46.8) | 1.1 (1.0–1.6) | 38 (95.0) | 12 (31.6) | 1.1 (1.0–1.2) | 0.46 |
| ACA A1 | 44 (46.3) | 23 (52.2) | 1.2 (1.1–1.5) | 38 (95.0) | 18 (47.4) | 1.1 (1.1–1.3) | 0.23 |
| ICA C1 | 44 (46.3) | 19 (43.2) | 1.1 (1.0–1.4) | 38 (95.0) | 12 (31.6) | 1.1 (1.0–1.2) | 0.82 |
| VrA | 43 (45.3) | 28 (65.1) | 1.2 (1.1–1.6) | 37 (92.5) | 20 (54.1) | 1.2 (1.1–1.2) | 0.11 |
| Left | |||||||
| MCA M1 | 46 (48.4) | 25 (54.5) | 1.2 (1.0–1.6) | 38 (95.0) | 14 (36.8) | 1.1 (1.0–1.2) | 0.34 |
| ACA A1 | 42 (44.2) | 23 (54.8) | 1.2 (1.0–1.5) | 38 (95.0) | 15 (39.5) | 1.1 (1.1–1.2) | 0.55 |
| ICA C1 | 44 (46.3) | 23 (52.3) | 1.2 (1.0–1.6) | 38 (95.0) | 13 (34.2) | 1.1 (1.0–1.2) | 0.22 |
| VrA | 47 (49.5) | 30 (63.8) | 1.2 (1.1–1.6) | 36 (90.0) | 18 (50.0) | 1.2 (1.0–1.2) | 0.05 |
| BA proximal | 44 (46.3) | 28 (63.6) | 1.2 (1.1–1.5) | 37 (92.5) | 16 (43.2) | 1.1 (1.0–1.2) | 0.07 |
Pulsatility indices were calculated by Gosling’s formula: (peak systolic velocity − end diastolic velocity)/mean flow velocity
ACA, anterior cerebral artery, BA, basilar artery, ECMO, extracorporeal membrane oxygenation, IABP, intraaortic balloon pump, ICA, internal carotid artery, IQR, interquartile range, MCA, middle cerebral artery, PI, pulsatility index, VA, venoarterial, VrA, vertebral artery, VV, venovenous