Parameter Pre-operation     Post-operation          P value
Laboratory data variables
Hct (%)                            33.61±6.44 36.30±6.12          0.2538
Plat (×104/μL)                     194.19±77.97      202.72±72.60       

0.2203

T-bil (mg/dL)                         1.66±1.06        1.06±1.32         0.1079
D-bil (mg/dL)                         0.55±0.47 0.37±0.82         0.4562
BUN (mg/dL)                          33.21±16.05     27.50±13.01        0.3695
Cre (mg/dL)                           1.44±0.50       1.41±0.58          0.4343
Na (mEq/L)                         131.75±9.61      132.08±8.36       

0.7745

K (mEq/L)                            4.18±0.53        4.19±0.52        0.5510
Alb (mg/dL)                           3.66±0.45 4.07±0.62        0.0019
BNP (mg/dL)                       1946.53±1311.01   683.65±615.03      0.0003

Hemodynamic variables

CO (L/min/m2)                    3.28±0.86          5.34±1.36         0.001
PAWP (mmHg) 25.11±8.56         12.69±5.28         0.001
Mean PA (mmHg)                      36.47±10.37         22.93±7.97        0.0001
RAP (mmHg)                           10.29±6.71         8.02±4.75         0.1120
Mean AP (mmHg)                      76.32±11.82        81.53±5.59         0.2888
PVR (wood)                           3.62±2.20          2.16±1.15         0.0003
SVR (wood)                           21.38±8.53         14.56±4.03        0.0002
Data are presented as mean±SD, unless otherwise indicated
Abbreviations: Hct, hematocrit; Plat, platelet count; T-bil, total bilirubin; D-bil, direct bilirubin; BUN, blood urea nitrogen; Cre, creatinine; Na, sodium; K, potassium; Alb, albumin; BNP, brain natriuretic peptide; CO, cardiac output; PAWP, pulmonary atrial wedge pressure; PA, pulmonary artery pressure; RAP, right atrial pressure; AP, arterial pressure; PVR, pulmonary vascular resistance; SVR, systemic vascular resistance
Table2: Laboratory and hemodynamic variables before and after LVAD surgery.