Table 4.
Pulse wave analysis
| Dialysate ionized calcium concentration (mmol/l) | t-test | ||
|---|---|---|---|
| 1.25 | 1.50 | ||
| Operator quality index | 82.7 ± 19.3 | 89.0 ± 8.4 | ns |
| Systolic BP, peripheral (mmHg) | 134.2 ± 18.9 | 144.9 ± 21.6 | <0.05 |
| Diastolic BP, peripheral (mmHg) | 68.2 ± 10.8 | 73.9 ± 10.8 | <0.05 |
| Heart rate (beat/min) | 65.1 ± 8.7 | 61.4 ± 9.5 | <0.01 |
| Sistolic BP, central (mmHg) | 123.4 ± 19.2 | 133.9 ± 20.4 | <0.05 |
| Diastolic BP, central (mmHg) | 68.8 ± 10.9 | 74.5 ± 11.2 | <0.05 |
| Ejection duration, adjusted (ms) | 308.7 ± 26.1 | 315.3 ± 27.0 | <0.05 |
| Diastolic duration, central (ms) | 631.1 ± 113.4 | 685.2 ± 148.7 | <0.05 |
| Augmentation index, central (%) | 151.6 ± 22.9 | 152.7 ± 18.6 | ns |
| Augmented pressure, central (mmHg) | 18.5 ± 9.4 | 20.8 ± 10.0 | ns |
| Dialysate bicarbonate concentration (mmol/l) | |||
| Low (range 26–29) | High (range 32–35) | ||
| Operator quality index | 87.5 ± 11.8 | 82.3 ± 20.8 | ns |
| Systolic BP, peripheral (mmHg) | 142.4 ± 16.8 | 134.0 ± 16.4 | <0.05 |
| Diastolic BP, peripheral (mmHg) | 72.5 ± 10.9 | 67.4 ± 8.3 | <0.01 |
| Heart rate (beat/min) | 60.9 ± 9.4 | 63.2 ± 8.8 | ns |
| Sistolic BP, central (mmHg) | 131.1 ± 16.4 | 123.1 ± 16.3 | <0.05 |
| Diastolic BP, central (mmHg) | 73.0 ± 11.2 | 68.3 ± 8.5 | <0.05 |
| Ejection duration, adjusted (ms) | 315.9 ± 25.0 | 313.1 ± 25.3 | ns |
| Diastolic duration, central (ms) | 693.1 ± 143.6 | 652.9 ± 125.9 | ns |
| Augmentation index, central (%) | 152.5 ± 22.9 | 149.6 ± 21.4 | <0.05 |
| Augmented pressure, central (mmHg) | 20.0 ± 9.4 | 18.2 ± 8.9 | ns |
Results of the pulse wave analysis with calculation of the central aortic indices using a low and high dialysate calcium and bicarbonate concentrations, respectively.
Significant differences are highlighted in bold; ns: non significant.