Variable | CRRT ≤3 days (n = 1234) | CRRT 4–6 days (n = 451) | CRRT ≥7 days (n = 587) | P |
---|---|---|---|---|
Age (years) | 57.7 ± 15.8 | 58.3 ± 16.0 | 57.5 ± 15.8 | 0.696 |
Age group (years) | Â | Â | Â | 0.443 |
 ≤ 40 | 190 (15.4) | 62 (13.7) | 94 (16.0) |  |
 41–50 | 179 (14.5) | 70 (15.5) | 91 (15.5) |  |
 51–60 | 285 (23.1) | 102 (22.6) | 123 (21.0) |  |
 61–70 | 252 (20.4) | 101 (22.4) | 140 (23.9) |  |
 71–80 | 256 (20.7) | 85 (18.8) | 96 (16.4) |  |
 > 80 | 72 (5.8) | 31 (6.9) | 43 (7.3) |  |
Sex | Â | Â | Â | 0.689 |
 Male | 895 (72.5) | 319 (70.7) | 417 (71.0) |  |
 Female | 339 (27.5) | 132 (29.3) | 170 (29.0) |  |
ECMO indication | Â | Â | Â | 0.007 |
 CV (cardiogenic shock, myocarditis, or AMI) | 341 (27.6) | 107 (23.7) | 117 (19.9)a |  |
 Post-cardiotomy shock | 545 (44.2) | 219 (48.6) | 285 (48.6) |  |
 Respiratory | 256 (20.7) | 94 (20.8) | 154 (26.2)a |  |
 Trauma | 54 (4.4) | 20 (4.4) | 19 (3.2) |  |
 Other | 38 (3.1) | 11 (2.4) | 12 (2.0) |  |
ECMO duration (days) | 3.9 ± 4.1 | 5.2 ± 3.9a | 7.1 ± 6.4a | < 0.001 |
Comorbidities | ||||
 Chronic kidney disease | 152 (12.3) | 62 (13.7) | 81 (13.8) | 0.588 |
 Diabetes mellitus | 367 (29.7) | 141 (31.3) | 203 (34.6) | 0.114 |
 Hypertension | 496 (40.2) | 180 (39.9) | 228 (38.8) | 0.858 |
 Heart failure | 267 (21.6) | 86 (19.1) | 102 (17.4) | 0.089 |
 Coronary artery disease | 650 (52.7) | 238 (52.8) | 282 (48.0) | 0.151 |
 Prior myocardial infarction | 178 (14.4) | 46 (10.2) | 67 (11.4) | 0.036 |
 Atrial fibrillation | 125 (10.1) | 37 (8.2) | 63 (10.7) | 0.371 |
 Peripheral arterial disease | 50 (4.1) | 25 (5.5) | 26 (4.4) | 0.421 |
 Prior stroke | 124 (10.0) | 51 (11.3) | 67 (11.4) | 0.596 |
 Chronic obstructive pulmonary disease | 81 (6.6) | 28 (6.2) | 41 (7.0) | 0.880 |
 Liver cirrhosis | 62 (5.0) | 18 (4.0) | 27 (4.6) | 0.668 |
 Malignancy | 79 (6.4) | 25 (5.5) | 40 (6.8) | 0.700 |
 Charlson score | 2.63 ± 2.28 | 2.52 ± 2.17 | 2.65 ± 2.30 | 0.619 |
Study year |  |  |  | < 0.001 |
 2007–2009 | 412 (33.4) | 124 (27.5) | 149 (25.4)a |  |
 2010–2011 | 409 (33.1) | 141 (31.3) | 182 (31.0) |  |
 2012–2013 | 413 (33.5) | 186 (41.2)a | 256 (43.6)a |  |
ECMO volume | Â | Â | Â | 0.071 |
 1st (1–143) | 327 (26.5) | 125 (27.7) | 149 (25.4) |  |
 2nd (149–220) | 268 (21.7) | 120 (26.6) | 144 (24.5) |  |
 3rd (230–441) | 264 (21.4) | 102 (22.6) | 118 (20.1) |  |
 4th (485–719) | 375 (30.4) | 104 (23.1) | 176 (30.0) |  |
Hospital level |  |  |  | < 0.001 |
 Medical center | 879 (71.2) | 346 (76.7) | 483 (82.3)a |  |
 District/regional hospital | 355 (28.8) | 105 (23.3) | 104 (17.7)a |  |
Follow-up (years) | 0.36 ± 1.09 | 0.50 ± 1.33 | 0.44 ± 1.08 | 0.062 |