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Table 3 Detailed methods of inducing experimental ARDS and definitions of injury

From: Extracorporeal membrane oxygenation (ECMO) and the acute respiratory distress syndrome (ARDS): a systematic review of pre-clinical models

Study

Detailed injury methods

Definition of injury (experimental ARDS)

Kim et al. [18]

0.1 mL/kg i.v. OA over 30 min

P/F < 150 mmHg

Araos et al. [12]

Saline lavage (30 mL/kg at 39 °C) × 4 (2 prone, 2 supine) and 2 h of injurious ventilation (inspiratory pressure 40 cmH2O, PEEP 0 cmH2O, FiO2 1.0, RR 10)

P/F < 250 mmHg

Wang et al. [28]

18–20 μg/kg i.v. E. coli LPS within 1 h

P/F ≤ 300 mmHg and 30% decrease in dynamic compliance from baseline

Ni et al. [23]

Blunt injury (free fall 0.45 kg weight from 1-m column) to each lateral chest wall (ribs 6–9) and hemorrhage to MAP 40 ± 5 mmHg for 2 h followed by crystalloid/autologous blood resuscitation

Not stated

Pilarczyk et al. [25]

Saline lavage (1000 mL bilaterally at 37 °C) repeated every 60 mins until injury achieved

PaO2 < 100 mmHg for > 1 h

Park et al. [24]

Saline lavage (1000 mL at 37 °C) repeated until injury achieved and fecal peritonitis (1 g/kg injection of feces into peritoneal cavity)

P/F < 50 mmHg

Kopp et al. [20]

Hypoxia (FiO2 reduced to achieve hypoxic inspiratory gas mixture)

SaO2 < 85%

Song et al. [26]

18–20 μg/kg i.v. E. coli LPS within 1 h

P/F ≤ 300 mmHg and 30% decrease in dynamic compliance from baseline

Kopp et al. [21]

Saline lavage (40 mL/kg) repeated until injury achieved

P/F < 100 mmHg

Henderson et al. [16]

0.2 mL/kg i.v. OA over 30 mins

P/F < 125 mmHg or HR < 60 bpm and/or reduction MAP > 50% from baseline

Dembinski et al. [13]

Saline lavage (40 mL/kg at 37 °C) repeated until injury achieved

PaO2 < 100 mmHg for > 1 h

Kocyildrim et al. [19]

3.5 μg/kg i.v. E. coli LPS over 30 mins

Not stated

Hou et al. [17]

Hypoxia (discontinuation of mechanical ventilation)

Not stated

Langer et al. [22]

0.1–0.15 mL/kg i.v. OA

P/F < 200 mmHg

Shekar et al. [14]

Smoke inhalation (10–12 mL/kg Vt breaths of cotton smoke, first cycle 12 breaths, then cycles of 8 breaths) repeated until injury achieved

Carboxyhemaglobin 45–50%

Totapally et al. [27]

Saline lavage (mL/kg) repeated × 3 and 2.5 mL/kg i.t. 0.1 N HCL

Not stated

Germann et al. [15]

0.5 mL/kg i.v. OA over 15 mins

LIS > 2.5

  1. OA oleic acid, i.v. intravenous, PEEP positive end expiratory pressure, FiO2 inspired fraction of oxygen, P/F ratio of arterial partial pressure of oxygen to inspired fraction of oxygen, LPS lipopolysaccharide, MAP mean arterial pressure, PaO2 arterial partial pressure of oxygen, bpm beats per minute, Vt tidal volume, HCL hydrochloric acid