Table 2.
Characteristics for Patients Undergoing Mitral Valve Replacementa
| Variable | No PPM (n = 372) | Moderate PPM (n = 286) | Severe PPM (n = 107) | p Value |
|---|---|---|---|---|
| Age (y) | 60 ± 15 | 62 ± 14 | 65 ± 13 | 0.01 |
| Patients <65 y | 205 (55%) | 146 (51%) | 44 (41%) | 0.04 |
| Body surface area (m2) | 1.76 ± 0.20 | 1.95 ± 0.23 | 1.97 ± 0.31 | <0.001 |
| Diabetes mellitus | 57 (15%) | 75 (26%) | 45 (42%) | <0.001 |
| Chronic renal disease | 47 (13%) | 38 (13%) | 26 (24%) | 0.008 |
| Ejection fraction | 0.47 ± 0.13 | 0.48 ± 0.13 | 0.47 ± 0.14 | 0.31 |
| Emergent/urgent status | 49 (13%) | 35 (12%) | 16 (15%) | 0.77 |
| Endocarditis | 62 (17%) | 47 (16%) | 31 (29%) | 0.009 |
| Bioprosthetic valve implanted | 82 (22%) | 146 (51%) | 97 (91%) | <0.001 |
| Pulmonary hypertensionb | 178/290 (61%) | 156/246 (63%) | 66/99 (67%) | 0.66 |
a
Continuous variables are mean ± standard deviation. Groups were compared using analysis of variance or χ2 test as appropriate. Probability values refer to the comparison among all three groups.
b
Not collected before 1996.
PPM = prosthesis-patient mismatch.