TABLE 1

Baseline and pre-extracorporeal membrane oxygenation (ECMO) characteristics

Survivors (n=29)Nonsurvivors (n=14)Total (n=43)
Age years45 (35–49)52.5 (43.8–53)46 (35.5–52.5)
Sex
 Female9 (31.0)1 (7.1)10 (23.3)
 Male20 (69.0)13 (92.9)33 (76.7)
BMI kg·m-229 (28–34)31 (26–34)29 (27–34)
Ethnicity (ISARIC)
 White9 (31.0)6 (42.9)15 (34.9)
 Black7 (24.1)3 (21.4)10 (23.3)
 South Asian11 (37.9)2 (14.3)13 (30.2)
 East Asian2 (6.9)2 (14.3)4 (9.3)
 Mixed0 (0)1 (7.1)1 (2.3)
Comorbidity
 Obesity#14 (48.3)7 (50.0)21 (48.8)
 Hypertension5 (17.2)5 (35.7)10 (23.3)
 Diabetes2** (6.9)6** (42.9)8 (18.6)
 Asthma2 (6.9)3 (21.4)5 (11.6)
Cardiac arrest0 (0)1 (7.1)1 (2.3)
RESP score4 (3–5)3 (3–5)4 (3–5)
PaO2/FIO267.5 (61.6–77.6)61.5 (53.7–79.5) (n=13)67.5 (58.9–77.8) (n=42)
pH7.34 (7.23–7.39) (n=28)7.25 (7.17–7.30) (n=13)7.30 (7.19–7.36) (n=41)
PaCO2 mmHg66.5 (52.5.0–70.5)69.8 (60.3–78.4)67.5 (53.1–75.8)
Ventilation days before ECMO5 (2–6)4 (1–6)5 (2–6)
SOFA score6 (4–8)9 (6–12)7 (4–10)

Data are presented as n (%) or median (interquartile range). BMI: body mass index; ISARIC: International Severe Acute Respiratory and Emerging Infection Consortium; RESP: Respiratory ECMO Survival Prediction; PaO2: arterial oxygen tension; FIO2: inspiratory oxygen fraction; SOFA: Sequential Organ Failure Assessment. #: Obesity defined as BMI ≥30 kg·m-2; : PaO2/FIO2 in mmHg at point of referral. **: p <0.01.