STS NATIONAL CARDIAC SURGERY DATABASE
1996 CAB + MITRAL VALVE REPLACEMENT PATIENTS
UNIVARIATE ANALYSIS: PREOPERATIVE RISK VARIABLES
PATIENT POPULATION: 2,822
OPERATIVE SURVIVORS: 2,465
OPERATIVE MORTALITIES: 357
RISK VARIABLE | Count | % of Pop. | Mortality w/ Variable Present |
| Mortality w/ Variable Absent |
| Relative Risk | c 2 p-Value |
Male | 1,422 | 50.39% | 149/ 1,422 | 10.48% | 208/ 1,400 | 14.86% | 0.71 | 0.0005 |
Female | 1,400 | 49.61% | 208/ 1,400 | 14.86% | 149/ 1,422 | 10.48% | 1.42 | 0.0005 |
Caucasian | 2,509 | 88.91% | 317/ 2,509 | 12.63% | 40/ 313 | 12.78% | 0.99 | 0.9420 |
Non-Caucasian | 313 | 11.09% | 40/ 313 | 12.78% | 317/ 2,509 | 12.63% | 1.01 | 0.9420 |
Smoking History | 1,469 | 52.06% | 162/ 1,469 | 11.03% | 195/ 1,353 | 14.41% | 0.77 | 0.0069 |
Family History | 1,003 | 35.54% | 106/ 1,003 | 10.57% | 251/ 1,819 | 13.80% | 0.77 | 0.0135 |
Diabetes | 746 | 26.44% | 128/ 746 | 17.16% | 229/ 2,076 | 11.03% | 1.56 | 0.0000 |
Morbid Obesity | 230 | 8.15% | 33/ 230 | 14.35% | 324/ 2,592 | 12.50% | 1.15 | 0.4191 |
Hypercholesterolemia | 989 | 35.05% | 131/ 989 | 13.25% | 226/ 1,833 | 12.33% | 1.07 | 0.4848 |
Renal Failure | 258 | 9.14% | 81/ 258 | 31.40% | 276/ 2,564 | 10.76% | 2.92 | 0.0000 |
Renal Failure Requiring Dialysis | 41 | 1.45% | 12/ 41 | 29.27% | 345/ 2,781 | 12.41% | 2.36 | 0.0013 |
Hypertension | 1,647 | 58.36% | 219/ 1,647 | 13.30% | 138/ 1,175 | 11.74% | 1.13 | 0.2214 |
Pulmonary Hypertension | 820 | 29.06% | 98/ 820 | 11.95% | 259/ 2,002 | 12.94% | 0.92 | 0.4744 |
CVA | 264 | 9.36% | 38/ 264 | 14.39% | 319/ 2,558 | 12.47% | 1.15 | 0.3708 |
Endocarditis | 85 | 3.01% | 10/ 85 | 11.76% | 347/ 2,737 | 12.68% | 0.93 | 0.8030 |
Cardiomegaly | 726 | 25.73% | 101/ 726 | 13.91% | 256/ 2,096 | 12.21% | 1.14 | 0.2355 |
COPD | 598 | 21.19% | 76/ 598 | 12.71% | 281/ 2,224 | 12.63% | 1.01 | 0.9614 |
Immunosuppressive Rx | 65 | 2.30% | 12/ 65 | 18.46% | 345/ 2,757 | 12.51% | 1.48 | 0.1539 |
Peripheral Vascular Disease | 16 | 0.57% | 1/ 16 | 6.25% | 356/ 2,806 | 12.69% | 0.49 | 0.4399 |
Cerebrovascular Disease | 315 | 11.16% | 44/ 315 | 13.97% | 313/ 2,507 | 12.49% | 1.12 | 0.4554 |
Prior CAB | 290 | 10.28% | 44/ 290 | 15.17% | 313/ 2,532 | 12.36% | 1.23 | 0.1726 |
Prior Valve | 205 | 7.26% | 25/ 205 | 12.20% | 332/ 2,617 | 12.69% | 0.96 | 0.8386 |
Prior Other Cardiac | 121 | 4.29% | 17/ 121 | 14.05% | 340/ 2,701 | 12.59% | 1.12 | 0.6361 |
Prior Non-Cardiac | 185 | 6.56% | 30/ 185 | 16.22% | 327/ 2,637 | 12.40% | 1.31 | 0.1312 |
Prior Non-Surgical | 389 | 13.78% | 57/ 389 | 14.65% | 300/ 2,433 | 12.33% | 1.19 | 0.2007 |
PTCA To OR <6Hrs | 15 | 0.53% | 6/ 15 | 40.00% | 351/ 2,807 | 12.50% | 3.20 | 0.0014 |
PTCA To OR >6Hrs | 151 | 5.35% | 24/ 151 | 15.89% | 333/ 2,671 | 12.47% | 1.27 | 0.2178 |
Pior MI <6 Hrs vs. No MI | 31 | 1.10% | 16/ 31 | 51.61% | 175/ 1,725 | 10.14% | 5.09 | 0.0000 |
Prior MI 6 to 24 Hrs vs. No MI | 52 | 1.84% | 17/ 52 | 32.69% | 175/ 1,725 | 10.14% | 3.22 | 0.0000 |
Prior MI 1-7 Days vs. No MI | 299 | 10.60% | 68/ 299 | 22.74% | 175/ 1,725 | 10.14% | 2.24 | 0.0000 |
Prior MI 7-21 Days vs. No MI | 128 | 4.54% | 27/ 128 | 21.09% | 175/ 1,725 | 10.14% | 2.08 | 0.0001 |
Prior MI >21 Days vs. No MI | 587 | 20.80% | 54/ 587 | 9.20% | 175/ 1,725 | 10.14% | 0.91 | 0.5077 |
Congestive Heart Failure | 1,789 | 63.39% | 239/ 1,789 | 13.36% | 118/ 1,033 | 11.42% | 1.17 | 0.1360 |
Unstable Angina | 969 | 34.34% | 184/ 969 | 18.99% | 173/ 1,853 | 9.34% | 2.03 | 0.0000 |
Cardiogenic Shock | 213 | 7.55% | 76/ 213 | 35.68% | 281/ 2,609 | 10.77% | 3.31 | 0.0000 |
Resuscitation | 59 | 2.09% | 22/ 59 | 37.29% | 335/ 2,763 | 12.12% | 3.08 | 0.0000 |
Arrhythmia | 1,038 | 36.78% | 120/ 1,038 | 11.56% | 237/ 1,784 | 13.28% | 0.87 | 0.1840 |
Digitalis | 1,089 | 38.59% | 120/ 1,089 | 11.02% | 237/ 1,733 | 13.68% | 0.81 | 0.0388 |
Beta Blockers | 701 | 24.84% | 90/ 701 | 12.84% | 267/ 2,121 | 12.59% | 1.02 | 0.8627 |
Ca Antagonists | 710 | 25.16% | 91/ 710 | 12.82% | 266/ 2,112 | 12.59% | 1.02 | 0.8775 |
ACE Inhibitors | 1,049 | 37.17% | 123/ 1,049 | 11.73% | 234/ 1,773 | 13.20% | 0.89 | 0.2555 |
Nitrates - P.O. | 797 | 28.24% | 108/ 797 | 13.55% | 249/ 2,025 | 12.30% | 1.10 | 0.3668 |
Nitrates - I.V. | 478 | 16.94% | 109/ 478 | 22.80% | 248/ 2,344 | 10.58% | 2.16 | 0.0000 |
Antiarrhythmics | 294 | 10.42% | 45/ 294 | 15.31% | 312/ 2,528 | 12.34% | 1.24 | 0.1478 |
Antiplatelets | 829 | 29.38% | 123/ 829 | 14.84% | 234/ 1,993 | 11.74% | 1.26 | 0.0242 |
Anticoagulants | 1,086 | 38.48% | 145/ 1,086 | 13.35% | 212/ 1,736 | 12.21% | 1.09 | 0.3755 |
Diuretics | 1,557 | 55.17% | 199/ 1,557 | 12.78% | 158/ 1,265 | 12.49% | 1.02 | 0.8172 |
Inotropes | 268 | 9.50% | 75/ 268 | 27.99% | 282/ 2,554 | 11.04% | 2.53 | 0.0000 |
Steroids | 140 | 4.96% | 28/ 140 | 20.00% | 329/ 2,682 | 12.27% | 1.63 | 0.0073 |
Aspirin | 1,162 | 41.18% | 156/ 1,162 | 13.43% | 201/ 1,660 | 12.11% | 1.11 | 0.3004 |