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Table 3 60-Day Crude Outcome Differences

From: The repurposed use of anesthesia machines to ventilate critically ill patients with coronavirus disease 2019 (COVID-19)

  Overall
(n = 89)
Anesthesia Machine
(n = 17)
ICU Ventilator
(n = 72)
P value
Mortality, no. (%) 39 (43.8) 12 (70.6) 27 (37.5) 0.016
ICU length of stay, days 14 [9–33] 12 [5–28] 16 [10–33] 0.280
ICU-free days 0 [0–42] 0 [0–6] 11 [0–45] 0.084
Hospital length of stay, days 26 [13–52] 19 [8–46] 26 [16–56] 0.122
Hospital-free days 0 [0–21] 0 [0–0] 0 [0–31] 0.104
Mechanical ventilation days 14 [9–279] 12 [4–28] 14 [10–27] 0.364
Ventilator-free days 11 [0–43] 0 [0–9] 21 [0–46] 0.033
ECMO initiation, no. (%) 6 (6.7) 0 (0) 6 (8.3) 0.591
Tracheostomy, no. (%) 42 (47.2) 9 (52.9) 33 (45.8) 0.788
Barotrauma a, no. (%) 4 (4.5) 2 (11.8) 2 (2.8) 0.163
Emergency tube exchange b, no (%) 4 (4.5) 3 (17.7) 1 (1.4) 0.021
  1. Data reported as Number (Percentage) or Median [Interquartile Range]; Differences between groups were assessed with a Mann-Whitney U test or Fisher’s Exact test depending on variable type. ECMO: Extra-Corporeal Membrane Oxygenation; ICU: Intensive Care Unit; a Barotrauma defined as spontaneous pneumothorax and/or pneumomediastinum during mechanical ventilation; b Extubation and immediate re-intubation due to life-threatening airway occlusion