Table 1.
iPOSITION baseline demographic characteristics, clinical history, cardiovascular risk factors, clinical presentation, and procedural characteristics.
| BASELINE CHARACTERISTICS | |
| Age [years] | 60.9 ± 10.9 |
| Sex (male) | 204 (82.6%) |
| Clinical history | |
| Previous MI (> 30 days) | 9 (3.6%) |
| Previous CABG | 3 (1.2%) |
| Previous PCI | 11 (4.5%) |
| Previous stroke/TIA | 4 (1.6%) |
| Cardiovascular risk factors | |
| Hypertension | 126 (51.0%) |
| Diabetes mellitus | 33 (13.4%) |
| Renal dysfunction (GFR < 60 mL/ /min/1.73 m2) | 7 (2.8%) |
| Smoker: | |
| Active smoker | 113 (45.7%) |
| Former smoker | 33 (13.4%) |
| Family history CAD | 74 (30%) |
| Hypercholesterolemia | 62 (25.1%) |
| Time from onset of symptoms | |
| < 3 h | 134 (54.3%) |
| ≥ 3 h and < 6 h | 74 (30.0%) |
| ≥ 6 h and <12 h | 28 (11.3%) |
| ≥ 12 h | 11 (4.5%) |
| Killip class | |
| I | 219 (88.7%) |
| II | 19 (7.7%) |
| III | 4 (2.0%) |
| IV | 0 (0.0%) |
| Unknown | 4 (1.6%) |
| Lesion location | |
| RCA | 107 (43.3%) |
| LM | 4 (1.6%) |
| LAD | 101 (40.9%) |
| LCX | 34 (13.8%) |
| Ramus | 2 (0.8%) |
| Lesion characteristics | |
| Reference vessel diameter [mm] | 3.40 ± 0.46 |
| Length [mm] | 26.1 ± 10.5 |
| High thrombus burden (TIMI thrombus grade ≥ 4) | 101 (40.9%) |
| Ostial lesion | 18 (7.3%) |
| Bifurcation | 58 (23.5%) |
| Calcifications (≥ mild) | 37 (15.0%) |
| Tortuosity (≥ mild) | 12 (4.9%) |
| Xposition S size | |
| S (2.5–3.0 mm) | 60 (24.3%) |
| M (3.0–3.5 mm) | 127 (51.4%) |
| L (3.5–4.5 mm) | 60 (24.3%) |
| Xposition S length | |
| 17 mm 30 | (12.1%) |
| 22 mm 86 | (34.8%) |
| 27 mm 73 | (29.6%) |
| 37 mm 58 | (23.5%) |
| Techniques used | |
| QCA assessment | 12 (4.9%) |
| Intravascular imaging (IVUS or OCT) | 6 (2.4%) |
| Thrombus aspiration | 73 (29.6%) |
| Pre-dilation | 204 (82.6%) |
| Post-dilation | 186 (75.3%) |
| POST-PROCEDURAL OUTCOMES | |
| Procedural outcomes | |
| TIMI flow post: | |
| 0 | 0 (0.0%) |
| 1 | 2 (0.8%) |
| 2 | 16 (6.5%) |
| 3 | 227 (92.7%) |
| Postprocedural vessel dissection | 3 (1.2%) |
Variables have been reported as mean ± standard deviation or number (%). MI — myocardial infarction; CABG — coronary artery by-pass graft; PCI — percutaneous coronary intervention; TIA — transient ischemic attack; GFR — glomerular filtration rate; CAD — coronary artery disease; RCA — right coronary artery; LM — left main; LAD — left anterior descending coronary artery; LCX — left circumflex coronary artery; TIMI —Thrombolysis in Myocardial Infarction; QCA — quantitative coronary analysis; IVUS — intravascular ultrasound; OCT — optical coherence tomography