Table 1 Preoperative characteristics and their distribution among the patients within the stented group and the stentless group
From: A propensity matched analysis of outcomes and long term survival in stented versus stentless valves
Variable | Stented [No. (%)] (n = 444) | Stentless [No. (%)] (n = 444) | P-Value |
|---|---|---|---|
Age (y)a | 70.9 ± 11.8 | 71.2 ± 10.8 | 0.729 |
Gender (male) | 315 (71.0) | 318 (71.6) | 0.824 |
Diabetes | 122 (27.5) | 126 (28.4) | 0.765 |
Smoker | 168 (37.8) | 167 (37.6) | 0.945 |
NYHA class | 0.408 | ||
I | 20 (6.9) | 23 (7.0) | |
II | 59 (20.3) | 77 (23.3) | |
III | 138 (47.6) | 165 (50.0) | |
IV | 73 (25.2) | 65 (19.7) | |
Operation Status | 0.275 | ||
First operation | 391 (88.1) | 380 (85.6) | |
Reoperation | 53 (11.9) | 64 (14.4) | |
Valve status | 0.759 | ||
Insufficient | 115 (25.9) | 114 (25.7) | |
Mixed | 159 (38.3) | 150 (40.5) | |
Stenosis | 170 (35.8) | 180 (33.8) | |
Surgical procedure | 0.419 | ||
Isolated AVR | 195 (43.9) | 207 (46.6) | |
AVR + CABG | 249 (56.1) | 237 (53.4) | |
Hypertension | 336 (75.7) | 337 (75.9) | 0.938 |
Cerebrovascular disease | 50 (11.3) | 56 (12.6) | 0.535 |
Renal Failure | 37 (8.3) | 39 (8.8) | 0.810 |
Chronic Lung Disease | 0.854 | ||
None | 392 (88.3) | 386 (86.9) | |
Mild | 32 (7.2) | 35 (7.9) | |
Moderate | 14 (3.2) | 14 (3.2) | |
Severe | 6 (1.4) | 9 (2.0) | |
Ejection Fraction (%)a | 53.8 ± 12.9 | 53.7 ± 12.5 | 0.930 |
PVD | 52 (11.7) | 53 (11.9) | 0.917 |
Year | >0.999 | ||
1998–2002 | 114 (25.7) | 114 (25.7) | |
2003–2006 | 70 (15.8) | 70 (15.8) | |
2007–2010 | 260 (58.6) | 260 (58.6) |