Patient characteristics
| Age <70 yrs | p Value | Age ≥70 yrs | p Value | |||
|---|---|---|---|---|---|---|
| No mismatch (n=318) | Mismatch (n=110) | No mismatch (n=90) | Mismatch (n=189) | |||
| Preoperative characteristics (%) | ||||||
| Diabetes | 14 (4.4) | 8 (7.3) | 0.2 | 2 (2.2) | 10 (5.3) | 0.3 |
| Hypertension | 166 (52.2) | 62 (56.4) | 0.5 | 58 (64.4) | 112 (59.3) | 0.4 |
| Prior myocardial infarction | 2 (0.63) | 1 (0.91) | 1.0 | 0 | 0 | – |
| BMI ≥30 | 48 (40.0) | 15 (34.1) | 0.7 | 6 (17.1) | 8 (12.7) | 0.5 |
| Male sex | 231 (72.6) | 64 (58.2) | 0.005 | 61 (67.8) | 105 (55.6% | 0.06 |
| CABG | 79 (24.8) | 38 (34.6) | 0.05 | 41 (45.6) | 85 (45.0) | 0.9 |
| Atrial fibrillation | 11 (3.5) | 0 (0.0) | 0.05 | 1 (1.1) | 10 (5.3) | 0.1 |
| NYHA class | 0.5 | 0.7 | ||||
| I | 85 (26.8) | 24 (21.8) | 18 (20.0) | 50 (26.5) | ||
| II | 104 (32.7) | 33 (30.0) | 21 (23.3) | 39 (20.6) | ||
| III | 85 (26.8) | 36 (32.7) | 36 (40.0) | 73 (38.6) | ||
| IV | 44 (13.8) | 17 (15.5) | 15 (16.7) | 27 (14.3) | ||
| LVEF <50% | 106 (33.3) | 28 (25.5) | 0.1 | 36 (40.0) | 56 (29.6) | 0.09 |
| Emergency procedure | 9 (2.8) | 2 (1.8) | 0.6 | 2 (2.3) | 5 (2.7) | 0.8 |
| Operative characteristics (%) | ||||||
| Bioprosthetic valve | 53 (16.7) | 69 (62.7) | <.0001 | 38 (42.2) | 176 (93.1) | <.0001 |
| Aortic root enlargement* | 34 (10.7) | 16 (14.6) | 0.3 | 10 (3.6) | 14 (7.4) | 0.3 |
Mismatch stands for prosthesis–patient mismatch, defined as a ratio of the prosthesis's effective orifice area over the patient's body surface area equal to or less than 0.85 cm2/m2. p Values refer to the comparison between mismatch and no-mismatch patients within the age groups. Data are reported as n (%).
*Consists of annular (Nicks, Manouguian, Konno) or aortic root enlargement using pericardium or Dacron.
BMI, body mass index; CABG, coronary artery bypass grafting; NYHA, New York Heart Association.