STS NATIONAL CARDIAC SURGERY DATABASE
1996 MITRAL VALVE REPLACEMENT PATIENTS
UNIVARIATE ANALYSIS: PRE OPERATIVE RISK VARIABLES
PATIENT POPULATION: 4,151
RISK VARIABLE | Count | % of Pop. | Mortality w/ Variable Present |
| Mortality w/ Variable Absent |
| Relative Risk | c 2 p-Value |
CCS Class II vs. I | 308 | 7.42% | 14/ 308 | 4.55% | 27/ 730 | 3.70% | 1.23 | 0.5220 |
CCS Class III vs. I | 942 | 22.69% | 41/ 942 | 4.35% | 27/ 730 | 3.70% | 1.18 | 0.5020 |
CCS Class IV vs. I | 484 | 11.66% | 53/ 484 | 10.95% | 27/ 730 | 3.70% | 2.96 | 0.0000 |
NYHA Class II vs. I | 427 | 10.29% | 11/ 427 | 2.58% | 14/ 427 | 7.07% | 0.36 | 0.0076 |
NYHA Class III vs. I | 1,616 | 38.93% | 57/ 1,616 | 3.53% | 14/ 427 | 7.07% | 0.50 | 0.0150 |
NYHA Class IV vs. I | 935 | 22.52% | 97/ 935 | 10.37% | 14/ 427 | 7.07% | 1.47 | 0.1550 |
Aortic Valve Disease | 364 | 8.77% | 23/ 364 | 6.32% | 199/ 3,787 | 5.25% | 1.20 | 0.3889 |
Mitral Valve Disease | 3,531 | 85.06% | 178/ 3,531 | 5.04% | 44/ 620 | 7.10% | 0.71 | 0.0359 |
Tricuspid Valve Disease | 239 | 5.76% | 14/ 239 | 5.86% | 208/ 3,912 | 5.32% | 1.10 | 0.7183 |
Pulmonic Valve Disease | 24 | 0.58% | 3/ 24 | 12.50% | 219/ 4,127 | 5.31% | 2.36 | 0.1183 |
Reoperation #1 vs. First Op | 895 | 21.56% | 69/ 895 | 7.71% | 138/ 3,082 | 4.48% | 1.72 | 0.0001 |
Multiple Reoperations vs. First Op | 174 | 4.19% | 15/ 174 | 8.62% | 138/ 3,082 | 4.48% | 1.93 | 0.0120 |
Urgent vs. Elective | 688 | 16.57% | 47/ 688 | 6.83% | 126/ 3,266 | 3.86% | 1.77 | 0.0005 |
Emergent vs. Elective | 140 | 3.37% | 28/ 140 | 20.00% | 126/ 3,266 | 3.86% | 5.18 | 0.0000 |
Emergent/Salvage vs. Elective | 57 | 1.37% | 21/ 57 | 36.84% | 126/ 3,266 | 3.86% | 9.55 | 0.0000 |
Double Vessel Disease vs. Single | 33 | 0.79% | 6/ 33 | 18.18% | 4/ 65 | 6.15% | 2.96 | 0.0630 |
Triple Vessel Disease vs. Single | 34 | 0.82% | 3/ 34 | 8.82% | 4/ 65 | 6.15% | 1.43 | 0.6230 |
Left Main Disease | 19 | 0.46% | 1/ 19 | 5.26% | 221/ 4,132 | 5.35% | 0.98 | 0.9868 |
Preop IABP | 161 | 3.88% | 39/ 161 | 24.22% | 183/ 3,990 | 4.59% | 5.28 | 0.0000 |
Age 60 - 65 vs. Age < 60 | 613 | 14.77% | 25/ 613 | 4.08% | 46/ 1,636 | 2.81% | 1.45 | 0.1261 |
Age 66 - 70 vs. Age < 60 | 665 | 16.02% | 34/ 665 | 5.11% | 46/ 1,636 | 2.81% | 1.82 | 0.0063 |
Age 71 - 80 vs. Age < 60 | 1,068 | 25.73% | 90/ 1,068 | 8.43% | 46/ 1,636 | 2.81% | 3.00 | 0.0000 |
Age > 80 vs. Age < 60 | 169 | 4.07% | 27/ 169 | 15.98% | 46/ 1,636 | 2.81% | 5.68 | 0.0000 |
E.F. 45% - 54% vs. E.F. >=55% | 821 | 19.78% | 37/ 821 | 4.51% | 74/ 1,560 | 4.74% | 0.95 | 0.7944 |
E.F. 35% - 44% vs. E.F. >=55% | 393 | 9.47% | 23/ 393 | 5.85% | 74/ 1,560 | 4.74% | 1.23 | 0.3659 |
E.F. 25% - 34% vs. E.F. >=55% | 127 | 3.06% | 9/ 127 | 7.09% | 74/ 1,560 | 4.74% | 1.49 | 0.2404 |
E.F.< 25% vs. E.F. >=55% | 33 | 0.79% | 3/ 33 | 9.09% | 74/ 1,560 | 4.74% | 1.92 | 0.2492 |
E.F. Unknown vs. E.F. >=55% | 1,217 | 29.32% | 76/ 1,217 | 6.24% | 74/ 1,560 | 4.74% | 1.32 | 0.0825 |
LVEDP <15 | 906 | 21.83% | 29/ 906 | 3.20% | 39/ 839 | 4.65% | 0.74 | 0.1180 |
LVEDP >=15 | 839 | 20.21% | 39/ 839 | 4.65% | 29/ 906 | 3.20% | 1.36 | 0.1180 |
PA Sys <30 | 269 | 6.48% | 5/ 269 | 1.86% | 87/ 1,999 | 4.35% | 0.43 | 0.0520 |
PA Sys >=30 | 1,999 | 48.16% | 87/ 1,999 | 4.35% | 5/ 269 | 1.86% | 2.34 | 0.0520 |
PA Diast <15 | 465 | 11.20% | 10/ 465 | 2.15% | 78/ 1,727 | 4.52% | 0.48 | 0.0210 |
PA Diast >=15 | 1,727 | 41.60% | 78/ 1,727 | 4.52% | 10/ 465 | 2.15% | 2.10 | 0.0210 |
PA Wedge <15 | 433 | 10.43% | 10/ 433 | 2.31% | 74/ 1,536 | 4.82% | 0.48 | 0.0230 |
PA Wedge >=15 | 1,536 | 37.00% | 74/ 1,536 | 4.82% | 10/ 433 | 2.31% | 2.09 | 0.0230 |