Table II.
Statistical significance of differences in mean values of variables evaluated before and after haemodialytic treatment in 13 chronic uraemic patients
| Variable | Pre HT | Post HT | Value of p |
|---|---|---|---|
| Total area QRS [mV × ms] | 333 | 403 | < 0.01 |
| Blood volume [%] | 100 | 91.1 | < 0.0001 |
| Weight [kg] | 69.5 | 66.5 | < 0.003 |
| Blood pressure [mm Hg] | 140/83 | 135/79 | NS |
| Heart rate [bpm] | 77 | 77 | NS |
| Red cells [million/mm3] | 3.2 | 3.1 | NS |
| Haemoglobin [g/dl] | 12.4 | 13.9 | NS |
| Haematocrit [%] | 80 | 83 | NS |
| QRS length [ms] | 40.3 | 42.3 | NS |
| PH | 7.33 | 7.44 | < 0.0001 |
| Creatinine [mg/dl] | 10.1 | 4.1 | < 0.0001 |
| Azotaemia [mg/dl] | 73.07 | 28.77 | < 0.002 |
| Ca2+ [mg/dl] | 8.16 | 9.84 | < 0.005 |
| K+ [mEq/l] | 5.52 | 3.77 | < 0.0008 |
| Na+ [mEq/l] | 134.32 | 141.55 | < 0.0001 |
| Phosphataemia [mg/dl] | 6.122 | 2.65 | < 0.0001 |