Table 2.
Mean haematological parameters before and after transfusion of single unit of PRBC
| Parameter | Pre Transfusion Mean (M1) +SD | Post Transfusion Mean (M2) +SD | Mean Difference (M2-M1) +SD | 0.95 CI of difference | Paired t-test | p-value |
|---|---|---|---|---|---|---|
| Haemoglobin (g/dL) | 5.71+1.26 | 6.42+1.22 | 0.70+0.15 | 0.66-0.74 | 34.01 | <0.05 |
| RBC count (millions/mm3) | 2.52+0.49 | 2.81+0.47 | 0.29+0.19 | 0.24-0.34 | 10.89 | <0.05 |
| Haematocrit (%)* | 18.69+3.76 | 21.12+3.65 | 2.43+0.77 | 2.22-2.65 | 22.71 | <0.05* |
| Total leukocyte count (cells/mm3) | 11,577+3126 | 11,738+3125 | 161+500 | 22-300 | 2.33 | <0.05 |
| Platelet count (lakhs/mm3) | 1.90+0.91 | 1.89+0.91 | -.002+0.01 | (-0.005)-0.019 | 1.00 | >0.05 |
| MCV (fL) | 74.70+9.00 | 74.23+12.77 | -0.47+8.81 | (-2.92)-1.98 | -0.38 | >0.05 |
| MCH (pg) | 22.77+3.55 | 22.89+3.50 | 0.12+0.18 | 0.08-0.17 | 5.12 | <0.05 |
| MCHC (g/dL) | 30.61+3.91 | 30.38+3.68 | -0.23+0.75 | (-0.02)-(-0.44) | -2.22 | <0.05 |
| RDW (%) | 15.67+1.97 | 15.62+1.84 | -0.05+0.34 | (-0.15)-0.04 | -1.24 | >0.05 |
*
Indicates clinically insignificant increment.