Covariate | CO2 group | Control group | P value |
---|---|---|---|
Age (years) | 77.5 ± 10.4 | 76.5 ± 10.5 | 0.88 |
Diabetes | 33/50 (66%) | 64/100 (64%) | 0.4 |
Heart failure | 13/50 (26%) | 19/100 (19%) | 0.07 |
Hypertension | 36/50 (72%) | 75/100 (75%) | 0.34 |
Anemia | 37/50 (74%) | 84/100 (84%) | 0.07 |
Hypoalbuminemia | 28/50 (56%) | 58/100 (58%) | 0.41 |
Critical limb ischemia | 39/50 (78%) | 74/100 (74%) | 0.74 |
Iliac arteries | 9/50 (18%) | 23/100 (23%) | 0.62 |
Femoral arteries | 30/50 (60%) | 48/100 (48%) | 0.23 |
Popliteal arteries | 21/50 (42%) | 39/100 (39%) | 0.86 |
Tibial arteries | 27/50 (54%) | 58/100 (58%) | 0.77 |
Creatinine baseline (μmol/Lt) | 150.2 ± 48.8 | 136.5 ± 46.2 | 0.02 |
eGFR baseline (mls/min/1.73m2) | 39.5 ± 11.6 | 43.0 ± 12.4 | 0.08 |
CKD 4 or 5 (eGFR< 30) | 12/50 (24%) | 21/100 (21%) | 0.83 |
Intravenous hydration and/or NAC | 42/50 (84%) | 76/100 (76%) | 0.36 |