Table I.

Baseline characteristics of patients developing infected vs infection free patients

Variable	Infection Free (n=46)	Infection (n=15)	P value
ECMO Support days	10.4 ± 12.7	34 ± 24.8	<0.01
Age, years	48.1 ± 15.7	45.5 ± 14.7	0.56
BMI, kg/m2	28.9 ± 9.4	31 ± 11.2	0.46
BSA, m2	1.9 ± 0.3	1.9 ± 0.5	1.00
Hypertension	14 (30.4%)	2 (13.3%)	0.31
Diabetes	7 (15.2%)	1 (6.7%)	0.67
Chronic kidney disease	11 (23.9%)	1 (6.7%)	0.26
Smoking	12 (26.1%)	4 (26.7%)	1.00
Inotrope	16 (34.8%)	4 (26.7%)	0.75
Pressors	26 (56.5%)	8 (53.3%)	0.13
Nitric oxide	15 (32.6%)	1 (6.7%)	0.09
RESP Score	0.8 ± 3.3	−1.4 ± 3.1	0.02
Laboratory
Hemoglobin, g/dL	10.6 ± 2.8	11.3 ± 2.2	0.32
WBC, 1,000/mm3	13.6 ± 6.4	16.6 ± 12.5	0.38
Platelets, 1,000/mm3	231.4 ± 128	161.3 ± 94.2	0.03
Sodium, mEq/L	137.1 ± 8.5	138.4 ± 5.5	0.50
Creatinine, mg/dL	1.5 ± 2.4	1.9 ± 2.6	0.60
BUN, mg/dL	28.3 ± 19.2	32.3 ± 21.9	0.53
AST, U/L	71.1 ± 145.3	75.4 ± 107.7	0.90
ALT, U/L	57.3 ± 124.1	59 ± 86	0.95
Total bilirubin, mg/dL	2.1 ± 6.6	1 ± 0.8	0.27
Albumin, g/dL	2.9 ± 0.8	2.9 ± 0.4	1.00
INR	1.4 ± 0.7	1.4 ± 0.3	1.00
ABG (at cannulation)
pH	7.3 ± 0.1	7.3 ± 0.1	1.00
PaCO2	55.8 ± 21.9	57.5 ± 14.2	0.73
PaO2	116 ± 89.5	71.4 ± 25.1	<0.01
HCO3	26.5 ± 6.9	26.5 ± 6.5	1.00
Lactate	3.4 ± 3.4	4 ± 3.4	0.56

Continuous data are shown as means ± standard deviation (SD). Categorical variables are presented as number and percentage. BMI, body mass index; BSA, body surface area; RESP, Respiratory ECMO Survival Prediction; WBC, white blood cell; BUN, blood urea nitrogen; AST, aspartate aminotransferase; ALT, alanine aminotransferase; INR, international normalized ratio; PT, prothrombin time; PTT partial thromboplastin time