Table 2.
Changes in mineral metabolic analytes during the two different calcium bath exposures
| Variable | Phase 1 (high Ca bath, 3.5 mEq/liter) (n = 18)
|
Phase 2 (normal Ca bath, 2.5 mEq/liter) (n = 13)
|
||||
|---|---|---|---|---|---|---|
| 0 min | 150 min | P value | 0 min | 150 min | P value | |
| iCa (mmol/liter)a | 1.16 ± 0.10 | 1.42 ± 0.16 | <0.0001 | Not measured | Not measured | — |
| PTH (pg/ml)b | 645 (438, 772) | 131 (90, 392) | 0.006 | 581 (443, 928) | 586 (449, 929) | 0.50 |
| P (mg/dl) | 6.3 ± 2.2 | 3.2 ± 1.1 | <0.0001 | 6.8 ± 1.6 | 3.0 ± 0.8 | 0.0002 |
| log FGF23 | 3.59 ± 0.77 | 3.45 ± 0.78 | <0.0001 | 3.96 ± 0.63 | 3.81 ± 0.65 | 0.0002 |
P values were generated by the Wilcoxon signed rank test.
a
Ca measured as ionized in the high-calcium bath phase only.
b
PTH levels reported as median and 25th and 75th percentiles.