Exploration of Cardiology

Table 1

Penn State Health COVID-19 ECMO inclusion criteria based on capacity

Capacity	Inclusion criteria
Overall inclusion	Age: 18–65 paO₂/FiO₂ < 100 (pH < 7.25 for > 6 hours; paCO₂ > 60 mmHg or paO₂ < 50 mmHg) pH < 7.2 with plateau pressures > 30 cmH₂O Ventilator: < 10 days ventilator support Failed proning
< 50% capacity	Age: 18–65 paO₂/FiO₂ < 100 (pH < 7.25 for > 6 hours; paCO₂ > 60 mmHg or paO₂ < 50 mmHg) pH < 7.2 with plateau pressures > 30 cmH₂O Ventilator: < 10 days ventilator support Failed proning
50–80% capacity	Age: < 60 Ventilator: < 7 days ventilator support Peak pressures on ventilator < 40 cmH₂O Failed proning
> 80% capacity	Age < 50 Ventilator support < 5 days Failed proning

1 mmHg = 0.133322 kPa, 1 cmH₂O = 0.0980665 kPa. paO₂: arterial partial pressure of oxygen; paCO₂: arterial partial pressure of carbon dioxide