Table 1 Preoperative patient characteristics. AF; atrial fibrillation, CVS; cerebrovascular stroke, COPD; chronic obstructive pulmonary disease, CRF; chronic renal failure, LVEDD; left ventricular end-diastolic diameter, LVESD; left ventricular end-systolic diameter, LVEDV; left ventricular end-diastolic volume, PG; pressure gradient
From: Mitral valve replacement in mitral stenosis; the problem of small left ventricle
Preoperative patient characteristics | Small LV group (N = 86) | Normal or dilated LV group (N = 98) | P-value |
|---|---|---|---|
Age (years) | 34 ± 7 | 35 ± 8 | 0.02 |
Gender | |||
Males/Females | 36 (42%)/ 50 (58%) | 46 (47%)/ 52 (53%) | 0.49 |
Body surface area (m2) | 1.68 ± 0.12 | 1.71 ± 0.16 | 0.15 |
Chronic AF | 58 (67%) | 68 (69%) | 0.78 |
Previous CVS | 18 (21%) | 25 (25.5%) | 0.46 |
Previous balloon commisurotomy | 24 (28%) | 37 (38%) | 0.16 |
Co-morbidities | |||
Diabetes mellitus | 6 (7%) | 8 (8%) | 0.76 |
Systemic hypertension | 5 (5.8%) | 3 (3%) | 0.36 |
COPD | 2 (2%) | 2 (2%) | 0.89 |
Residual hemiparesis after previous CVS | 4 (4.6%) | 6 (6.1%) | 0.66 |
CRF on regular dialysis | 1 (1.16%) | – | 0.46 |
Preoperative Echocardiographic date | |||
Mean LVEDD (cm) | 4.94 ± 0.80 | 5.51 ± 1.70 | 0.002 |
Mean LVESD (cm) | 3.35 ± 0.18 | 3.54 ± 0.30 | 0.001 |
Mean LVEDV index (ml/m2) | 34.48 ± 2.7 | 65.67 ± 3.4 | 0.001 |
Mean mitral valve area (cm2) | 0.61 ± 0.20 | 0.62 ± 0.60 | 0.14 |
Mean PG across the mitral valve (mmHg) | 20.68 ± 2.56 | 20.03 ± 2.36 | 0.08 |
Degree of associated mitral regurgitation | 0.001 | ||
≤ + 1 | 75 (87%) | 8 (8%) | |
≤ + 2 | 11 (13%) | 90 (92%) | |
Mean left atrial diameter (cm) | 5.12 ± 0.58 | 5.28 ± 0.61 | 0.07 |
Mean pulmonary artery pressure (mmHg) | 54.17 ± 9.08 | 51.78 ± 9.60 | 0.08 |
Evidence of left atrial thrombus | 5 | 7 | 0.72 |