Table 1.
Baseline Characteristics of patients with and without CKD.
| Chronic Kidney Disease | |||
|---|---|---|---|
| Variable | Yes (n=225) | No (n=732) | P value |
| Age [years] (Mean ± SD) | 69.2 ± 10.1 | 64.1 ± 10.0 | < 0.001 |
| Women | 65 (28.9%) | 121 (16.5%) | < 0.001 |
| White | 202 (89.8%) | 662 (90.4%) | 0.30 |
| Diabetes Mellitus | 120 (53.3%) | 268 (36.6%) | < 0.001 |
| Congestive Heart Failure | 84 (37.3%) | 130 (17.8%) | < 0.001 |
| Ejection Fraction (Mean ± SD) | 48.7 ± 14.3 | 52.0 ± 13.2 | 0.002 |
| Current Smoker | 21 (9.5%) | 104 (14.4%) | 0.06 |
| Last HbgA1c (Mean ± SD) | 7.2 ± 1.6 | 6.9 ± 1.6 | 0.12 |
| History of Myocardial Infarction | 118 (52.4%) | 337 (46.0%) | 0.09 |
| Previous coronary bypass | 109 (48.4%) | 242 (33.1%) | < 0.001 |
| eGFR [[ml/min/1.73m2] (Mean ± SD) | 44.2 ± 14.5 | 87.3 ± 19.1 | < 0.001 |
| Medications on arrival | |||
| Diuretic | 139 (61.8%) | 224 (30.6%) | < 0.001 |
| Angiotensin Converting Enzyme Inhibitor | 86 (38.2%) | 346 (47.3%) | 0.02 |
| Procedural Variables | |||
| Initial Crossing Strategy | 0.006 | ||
| Antegrade wire escalation | 120 (48.9%) | 412 (56.3%) | |
| Antegrade dissection and reentry | 30 (13.3%) | 106 (14.5%) | |
| Retrograde wire escalation | 27 (12.0%) | 100 (13.7%) | |
| Retrograde dissection and reentry | 58 (25.8%) | 114 (15.6%) | |
| Successful Strategy | 0.43 | ||
| Antegrade wire escalation | 76 (37.8%) | 280 (41.1%) | |
| Antegrade dissection and reentry | 50 (24.9%) | 168 (24.7%) | |
| Retrograde wire escalation | 18 (9.0%) | 75 (11.0%) | |
| Retrograde dissection and reentry | 57 (28.4%) | 158 (23.2%) | |
| Target CTO Vessel | 0.61 | ||
| Left Main | 3 (1.3%) | 5 (0.7%) | |
| LAD/Diagonal | 42 (18.6%) | 154 (21.1%) | |
| LCX/Obtuse Marginal | 45 (20.0%) | 118 (16.2%) | |
| RCA/PDA/RPLV | 135 (59.9%) | 453 (62.2%) | |
| Non-CTO-PCI | 30 (13.3%) | 97 (13.3%) | 0.97 |
| Complete Revascularization | 162 (72.3%) | 566 (77.6%) | 0.10 |
| JCTO score (Mean ± SD) | 2.3 ± 1.2% | 2.3 ± 1.3 | 0.70 |
| Procedure Time (minutes) (Mean ± SD) | 124.6 ± 60.0 | 118.5 ± 65.0 | 0.21 |
| Contrast Used (cc) (Mean ± SD) | 229.9 ± 124.5 | 269.5 ± 141.7 | < 0.001 |
| Fluoroscopy Time (minutes) (Mean ± SD) | 53.0 ± 32.8 | 49.4 ± 34.7 | 0.18 |
| Radiation Dose (Air Kerma) (Mean ± SD) | 2481.8 ± 1856.1 | 2531.6 ± 1901.8 | 0.73 |
Abbreviations: estimated Glomerular Filtration Rate (eGFR), Chronic Total Occlusion (CTO), Left Anterior Descending coronary artery (LAD), Left Circumflex Coronary Artery (LCX), Right Coronary Artery (RCA), Posterior Descending Coronary Artery (PDA), Right Posterolateral Ventricular Coronary Artery (RPLV)