Table 2.
Demographics of study population categorized by occurrence of DSWI.
| DSWI (N=136) |
No DSWI (N=14,356) |
P Value | ||
|---|---|---|---|---|
| Demographics | ||||
| Age | ||||
| < 40 | 1 (0.7%) | 408 (2.8%) | 0.50 | |
| 40–49 | 10 (7.4%) | 1014 (7.1%) | ||
| 50–59 | 28 (20.6%) | 2545 (17.7%) | ||
| 60–69 | 35 (25.7%) | 3819 (26.6%) | ||
| 70–79 | 43 (31.6%) | 4218 (29.4%) | ||
| >=80 | 19 (14.0%) | 2352 (16.4%) | ||
| Year | ||||
| 2003–2004 | 45 (33.1%) | 2278 (15.9%) | ||
| 2005–2006 | 27 (19.9%) | 2376 (16.5%) | ||
| 2007–2008 | 23 (16.9%) | 2284 (15.9%) | <0.0001 | |
| 2009–2010 | 26 (19.1%) | 2354 (16.4%) | ||
| 2011–2012 | 8 (5.9%) | 2216 (15.4%) | ||
| 2013–2015 | 7 (5.2%) | 2848 (19.8%) | ||
| Gender (Female) | 45 (33.0%) | 4936 (34.4%) | 0.75 | |
| Race (Caucasian) | 129 (94.9%) | 13560 (94.5%) | 0.63 | |
| Height (cm) | 173 (155–183) | 173 (157–183) | 0.92 | |
| Weight (kg) | 88 (63–110) | 81 (60–107) | 0.0008 | |
| BMI (kg/m2) | 30 (22–39) | 27 (22–36) | 0.0034 | |
| BMI >30 kg/m2 | 65 (47.8%) | 4477 (31.2%) | <0.0001 | |
| Medical History | ||||
| Diabetes | 57 (40.4%) | 3792 (26.4%) | 0.0001 | |
| Hypertension | 103 (75.7%) | 10233 (71.2%) | 0.25 | |
| Chronic lung disease | 28 (20.6%) | 2040 (14.2%) | 0.045 | |
| Creatinine (mg/dL) | 1.1 (0.8 – 1.8) | 1.0 (0.7 – 1.5) | 0.050 | |
| Creatinine > 1.5mg/dL | 21 (15.4%) | 1307 (9.1%) | 0.019 | |
| Preoperative dialysis | 6 (4.4%) | 193 (1.3%) | 0.015 | |
| Postoperative renal failure | 10 (7.4%) | 867 (6.0%) | 0.53 | |
| Peripheral artery disease | 26 (19.1%) | 1872 (13.0%) | 0.048 | |
| Previous MI | 47 (34.6%) | 3490 (24.3%) | 0.008 | |
| Prior cardiac surgery | 13 (9.6%) | 1283 (8.9%) | 0.80 | |
| NYHA Class | ||||
| I | 25 (18.4%) | 2349 (16.3%) | ||
| II | 54 (39.7%) | 6814 (47.6%) | 0.002 | |
| III | 41 (30.2%) | 4593 (32.0%) | ||
| IV | 16 (11.8%) | 600 (4.2%) | ||
| STS DSWI Risk Index (%) | 0.54% (0.16% – 1.5%) | 0.33% (0.11% – 0.90%) | <0.0001 | |
| STS DSWI Risk Index (%) | ||||
| <0.5% | 62 (45.6%) | 9917 (69.1%) | <0.0001 | |
| 0.5 – 1.0% | 50 (36.8%) | 3328 (23.2%) | ||
| >1.0% | 24 (17.7%) | 1111 (7.7%) | ||
| Operation | ||||
| Operative status | ||||
| Elective | 70 (51.5%) | 9531 (66.4%) | ||
| Urgent | 56 (41.2%) | 4424 (30.8%) | 0.0008 | |
| Emergent or salvage | 10 (6.9%) | 401 (2.8%) | ||
| Operation type: | ||||
| CABG | 65 (47.8%) | 5239 (36.4%) | ||
| Valve | 35 (25.7%) | 6369 (19.4%) | <0.0001 | |
| CABG/Valve | 36 (26.5%) | 2748 (44.3%) | ||
| IABP | 17 (2.2%) | 768 (5.3%) | 0.0008 | |
| Bypass Time (min.) | 130 (81–255) | 119 (71–220) | 0.016 | |
| Bypass time | ||||
| <120 min | 49 (39.5%) | 6759 (50.1%) | 0.056 | |
| 120 – 240 min | 45 (36.3%) | 4202 (31.2%) | ||
| >240 min | 30 (24.2%) | 2526 (18.7%) | ||
| Open chest after surgery | 2 (1.5%) | 145 (1.0%) | 0.62 | |
| Vancomycin Paste Use | 38 (27.9%) | 4959 (34.5%) | 0.10 | |
| Outcomes | ||||
| Mortality | ||||
| 0–5 days | 0 (0%) | 166 (1.2%) | 0.07 | |
| 0–1 year | 23 (16.9%) | 874 (6.1%) | <0.0001 | |
| 0–5 years | 41 (30.2%) | 2156 (15.0%) | <0.0001 | |