Table 2 Preoperative routine investigations and operative data compared according to RDW level
Variables | Group A | Group B | Group C | p value |
|---|---|---|---|---|
Complete Blood Count | ||||
Haemoglobin (gm/dL) | 12.69 ± 1.54 | 12.60 ± 1.26 | 12.41 ± 1.45 | 0.612 |
ESR (mm in 1st hour) | 28.28 ± 16.91 | 30.11 ± 21.36 | 28.44 ± 17.68 | 0.878 |
Platelet count (× 1012/L) | 274.88 ± 71.59 | 261.86 ± 81.52 | 246.64 ± 78.09 | 0.162 |
Total WBC count (× 109/L) | 8.49 ± 2.25 | 8.54 ± 1.74 | 8.30 ± 2.07 | 0.866 |
Neutrophil/lymphocyte ratio | 2.12 ± 0.95 | 1.98 ± 0.79 | 2.12 ± 0.73 | 0.724 |
Absolute Indices | ||||
PCV (%) | 37.28 ± 4.19 | 37.68 ± 3.99 | 38.37 ± 3.98 | 0.402 |
MCV (fL) | 85.65 ± 5.02 | 83.18 ± 7.48 | 82.06 ± 7.90 | 0.014 |
MCH (pg) | 29.10 ± 2.63 | 27.65 ± 2.24 | 26.67 ± 3.52 | < 0.001 |
MCHC (pg) | 33.80 ± 3.56 | 33.23 ± 1.49 | 32.13 ± 1.06 | 0.009 |
MPV (fL) | 10.00 ± 1.19 | 9.73 ± 1.61 | 9.32 ± 1.04 | 0.030 |
PDW (fL) | 12.69 ± 2.68 | 13.87 ± 2.72 | 16.23 ± 2.64 | < 0.001 |
C-Reactive Protein (mg/L) | 3.54 ± 4.06 | 5.24 ± 6.19 | 2.83 ± 3.02 | 0.082 |
RBS (mmol/L) | 7.11 ± 2.61 | 8.47 ± 3.92 | 8.83 ± 4.22 | 0.340 |
Echocardiography | ||||
LVEF (%) | 54.54 ± 10.11 | 51.75 ± 10.33 | 56.33 ± 10.41 | 0.153 |
RWMA | 60 (80.0) | 27 (75.0) | 36 (92.3) | 0.116 |
Left Atrial size (mm) | 33.31 ± 3.92 | 33.83 ± 4.67 | 34.10 ± 4.59 | 0.612 |
Operative data | ||||
Number of distal anastomoses | 2.79 ± 0.58 | 3.00 ± 0.63 | 3.18 ± 0.60 | 0.004 |
Name of conduits used | ||||
Internal mammary artery (left) | 74 (98.7) | 36 (100.0) | 38 (97.4) | 0.999 |
Saphenous venous graft | 73 (97.3) | 36 (100.0) | 39 (100.0) | 0.738 |
Radial artery | 0 (0.0) | 0 (0.0) | 1 (2.6) | 0.500 |