STS NATIONAL CARDIAC SURGERY DATABASE
1996 AORTIC VALVE REPLACEMENT PATIENTS
UNIVARIATE ANALYSIS: PRE OPERATIVE RISK VARIABLES
PATIENT POPULATION: 8,352
OPERATIVE SURVIVORS: 8,032
OPERATIVE MORTALITIES: 320
RISK VARIABLE | Count | % of Pop. | Mortality w/ Variable Present |
| Mortality w/ Variable Absent |
| Relative Risk | c 2 p-Value |
CCS Class II vs. I | 947 | 11.34% | 28/ 947 | 2.96% | 47/ 1,248 | 3.77% | 0.79 | 0.3010 |
CCS Class III vs. I | 2,008 | 24.04% | 64/ 2,008 | 3.19% | 47/ 1,248 | 3.77% | 0.85 | 0.3760 |
CCS Class IV vs. I | 742 | 8.88% | 43/ 742 | 5.80% | 47/ 1,248 | 3.77% | 1.54 | 0.0350 |
NYHA Class II vs. I | 1,243 | 14.88% | 31/ 1,243 | 2.49% | 16/ 654 | 2.45% | 1.02 | 0.9500 |
NYHA Class III vs. I | 3,154 | 37.76% | 114/ 3,154 | 3.61% | 16/ 654 | 2.45% | 1.47 | 0.1340 |
NYHA Class IV vs. I | 1,362 | 16.31% | 86/ 1,362 | 6.31% | 16/ 654 | 2.45% | 3.42 | 0.0002 |
Aortic Valve Disease | 6,970 | 83.45% | 262/ 6,970 | 3.76% | 58/ 1,382 | 4.20% | 0.90 | 0.4385 |
Mitral Valve Disease | 948 | 11.35% | 57/ 948 | 6.01% | 263/ 7,404 | 3.55% | 1.69 | 0.0002 |
Tricuspid Valve Disease | 249 | 2.98% | 17/ 249 | 6.83% | 303/ 8,103 | 3.74% | 1.83 | 0.0124 |
Pulmonic Valve Disease | 38 | 0.45% | 1/ 38 | 2.63% | 319/ 8,314 | 3.84% | 0.69 | 0.6994 |
Reoperation #1 vs. First Op | 914 | 10.94% | 63/ 914 | 6.89% | 240/ 7,290 | 3.29% | 2.09 | 0.0000 |
Multiple Reoperations vs. First Op | 148 | 1.77% | 17/ 148 | 11.49% | 240/ 7,290 | 3.29% | 3.49 | 0.0000 |
Urgent vs. Elective | 1,235 | 14.79% | 69/ 1,235 | 5.59% | 216/ 6,938 | 3.11% | 1.79 | 0.0000 |
Emergent vs. Elective | 137 | 1.64% | 22/ 137 | 16.06% | 216/ 6,938 | 3.11% | 5.16 | 0.0000 |
Emergent/Salvage vs. Elective | 42 | 0.50% | 13/ 42 | 30.95% | 216/ 6,938 | 3.11% | 9.94 | 0.0000 |
Double Vessel Disease vs. Single | 76 | 0.91% | 5/ 76 | 6.58% | 14/ 162 | 8.64% | 0.76 | 0.5840 |
Triple Vessel Disease vs. Single | 78 | 0.93% | 10/ 78 | 12.82% | 14/ 162 | 8.64% | 1.48 | 0.3120 |
Left Main Disease | 37 | 0.44% | 2/ 37 | 5.41% | 318/ 8,315 | 3.82% | 1.41 | 0.6172 |
Preop IABP | 54 | 0.65% | 8/ 54 | 14.81% | 312/ 8,298 | 3.76% | 3.94 | 0.0000 |
Age 60 - 65 vs. Age < 60 | 1,038 | 12.43% | 25/ 1,038 | 2.41% | 56/ 2,509 | 2.23% | 1.08 | 0.7488 |
Age 66 - 70 vs. Age < 60 | 1,268 | 15.18% | 46/ 1,268 | 3.63% | 56/ 2,509 | 2.23% | 1.63 | 0.0125 |
Age 71 - 80 vs. Age < 60 | 2,631 | 31.50% | 124/ 2,631 | 4.71% | 56/ 2,509 | 2.23% | 2.11 | 0.0000 |
Age > 80 vs. Age < 60 | 906 | 10.85% | 69/ 906 | 7.62% | 56/ 2,509 | 2.23% | 3.41 | 0.0000 |
E.F. 45% - 54% vs. E.F. >=55% | 1,494 | 17.89% | 52/ 1,494 | 3.48% | 86/ 2,842 | 3.03% | 1.15 | 0.4178 |
E.F. 35% - 44% vs. E.F. >=55% | 875 | 10.48% | 30/ 875 | 3.43% | 86/ 2,842 | 3.03% | 1.13 | 0.5493 |
E.F. 25% - 34% vs. E.F. >=55% | 483 | 5.78% | 27/ 483 | 5.59% | 86/ 2,842 | 3.03% | 1.85 | 0.0040 |
E.F.< 25% vs. E.F. >=55% | 202 | 2.42% | 16/ 202 | 7.92% | 86/ 2,842 | 3.03% | 2.62 | 0.0002 |
E.F. Unknown vs. E.F. >=55% | 2,456 | 29.41% | 109/ 2,456 | 4.44% | 86/ 2,842 | 3.03% | 1.47 | 0.0065 |
LVEDP <15 | 962 | 11.52% | 27/ 962 | 2.81% | 80/ 2,159 | 3.71% | 0.76 | 0.2030 |
LVEDP >=15 | 2,159 | 25.85% | 80/ 2,159 | 3.71% | 27/ 962 | 2.81% | 1.32 | 0.2030 |
PA Sys <30 | 1,199 | 14.36% | 24/ 1,199 | 2.00% | 133/ 3,143 | 4.23% | 0.47 | 0.0004 |
PA Sys >=30 | 3,143 | 37.63% | 133/ 3,143 | 4.23% | 24/ 1,199 | 2.00% | 2.12 | 0.0004 |
PA Diast <15 | 1,687 | 20.20% | 41/ 1,687 | 2.43% | 106/ 2,516 | 4.21% | 0.58 | 0.0020 |
PA Diast>=15 | 2,516 | 30.12% | 106/ 2,516 | 4.21% | 41/ 1,687 | 2.43% | 1.73 | 0.0020 |
PA Wedge <15 | 1,720 | 20.59% | 36/ 1,720 | 2.09% | 98/ 2,051 | 4.78% | 0.44 | 0.0000 |
PA Wedge >=15 | 2,051 | 24.56% | 98/ 2,051 | 4.78% | 36/ 1,720 | 2.09% | 2.29 | 0.0000 |