Table 1.
The 24-h urine analyses of a 53-year-old woman after the first kidney stone episode at 7 years following RYGB surgery for morbid obesity (4/2010), and after the dietary intervention and medical treatment with potassium citrate (10/2011).
| Analysis | Normal levels | After RYGB | After treatment |
|---|---|---|---|
| Promoters | |||
| Volume (mL) | >1200 | 2500 | 3050 |
| 24-h urinary excretion rate (mmol): | |||
| Na | <200 | 130 | 180 |
| Ca | <8.00 | 2.33 | 4.82 |
| Oxalate | <0.450 | 1.075 | 0.458 |
| UA | <4.00 | 2.25 | 1.86 |
| Phosphate | Diet-dependent | 29.0 | 13.1 |
| Urea | Diet-dependent | 358 | 268 |
| Inhibitors | |||
| Citrate | >1.90 | 0.50 | 2.87 |
| Mg | >2.20 | 6.15 | 9.03 |