Table 3 ECMO settings, ventilatory status and vasopressor requirements
|  | Total (n = 35) | BTT (n = 19) | BTR (n = 16) |
|---|---|---|---|
ECMO blood flow rate pre-PT (LPM, mean ± SD) | 2.99 ± 0.88 | 2.99 ± 0.81 | 3.00 ± 0.99 |
ECMO blood flow rate during PT (LPM, mean ± SD) | 2.97 ± 0.94 | 3.02 ± 0.82 | 2.92 ± 1.09 |
ECMO sweep gas flow rate pre-PT (LPM, mean ± SD) | 2.97 ± 1.79 | 3.45 ± 1.71 | 2.39 ± 1.77 |
ECMO sweep gas flow rate during PT (LPM, mean ± SD) | 2.96 ± 1.80 | 3.46 ± 1.71 | 2.35 ± 1.78 |
Tracheostomy on ECMO (n, %) | 11 (31) | 9 (47) | 2 (13) |
Successful liberation from invasive mechanical ventilation while receiving ECMO (n, %) | 23 (66) | 13 (68) | 10 (63) |
   Room air (n, %) | 3 (13) | 2 (15) | 1 (10) |
   Nasal cannula (n, %) | 17 (74) | 8 (62) | 9 (90) |
   High flow nasal cannula (n, %) | 3 (13) | 3 (23) | 0 |
Vasopressor use during PT (n, %) | 9 (26) | 5 (26) | 4 (25) |
   Dose of norepinephrine (mcg/min, median, IQR) | 2 (0.5 to 5) | 3.5 (1.3 to 5) | 1.3 (0.5 to 2) |
   Dose of vasopressin (units/min) | 0.04 | 0.04 | 0.04 |