Table 1.
Patient information and urinary values by stone type
| CaOx (N = 37) |
CaOx-MAL (N = 8) |
CaPO4 (N = 12) |
Struvite (N = 9) |
UricAcid (N = 4) |
Other (N = 8) |
p value | |
|---|---|---|---|---|---|---|---|
| Age | 0.0047 | ||||||
| Mean (SD) | 62.5 (9.7) | 61.1 (9.8) | 44.6 (14.2) | 59.2 (16.4) | 53.3 (8.4) | 45.7 (20.2) | |
| Gender | 0.71 | ||||||
| Male | 11 (29.7%) | 2 (25.0%) | 5 (41.7%) | 5 (55.6%) | 1 (25.0%) | 3 (37.5%) | |
| Stones on CT | 0.53 | ||||||
| Median | 1.5 | 2.0 | 4.0 | 1.0 | 1.0 | 3.0 | |
| Plaque, average % | 0.87 | ||||||
| Mean (SD) | 3.6 (4.2) | 3.1 (2.3) | 2.8 (2.6) | 2.1 (2.0) | 1.7 (1.5) | 2.3 (1.5) | |
| Median | 1.8 | 2.5 | 1.9 | 1.7 | 1.1 | 1.7 | |
| Plug, average % | 0.18 | ||||||
| Mean (SD) | 0.3 (0.7) | 1.1 (2.6) | 3.4 (7.7) | 0.5 (1.3) | 0.2 (0.3) | 0.8 (1.1) | |
| Median | 0.0 | 0.1 | 1.1 | 0.0 | 0.1 | 0.4 | |
| Plug, > 1% | 0.013 | ||||||
| Yes | 4 (10.8%) | 2 (25.0%) | 7 (58.3%) | 1 (11.1%) | 0 (0.0%) | 2 (25.0%) | |
|
Current Medications |
|||||||
| Thiazides | 5 | 1 | 0 | 0 | 0 | 2 | |
| Citrate | 1 | 2 | 1 | 1 | 0 | 1 | |
| Allopurinol | 1 | 2 | 0 | 0 | 2 | 3 | |
| Urine Labs: Mean(SD) | |||||||
| Cr mg/24hr | 1207 (439) | 951 (355) | 1174 (340) | 1016 (338) | 1419 (385) | 1130 (421) | 0.45 |
| Na mmol/24hr | 145 (63) | 104 (81) | 137 (53) | 121 (44) | 120 (76) | 167 (124) | 0.88 |
| Phos mg/24hr | 775 (407) | 644 (267) | 899 (248) | 752 (418) | 798 (268) | 846 (381) | 0.44 |
| K mmol/24hr | 58 (21) | 44 (37) | 82 (80) | 58 (24) | 56 (25) | 65 (34) | 0.17 |
| UA mg/24hr | 522 (199) | 352 (155) | 510 (110) | 500 (163) | 504 (229) | 406 (172) | 0.29 |
| Cl mmol/24hr | 133 (58) | 111 (65) | 136 (81) | 110 (37) | 122 (78) | 157 (136) | 0.82 |
| Ca mg/24hr | 210 (101) | 133 (66) | 228 (55) | 212 (66) | 130 (88) | 140 (114) | 0.036 |
| Mg mg/24hr | 95 (38) | 110 (67) | 103 (42) | 106 (32) | 94 (78) | 112 (43) | 0.82 |
| Oxalate mmol/24hr | 0.3 (0.2) | 0.4 (0.3) | 0.3 (0.1) | 0.3 (0.2) | 0.3 (0.2) | 0.6 (0.3) | 0.17 |
| Osm | 466 (155) | 426 (158) | 563 (193) | 465 (216) | 701 (112) | 379 (79) | 0.031 |
| pH | 6.2 (0.5) | 5.9 (0.5) | 6.5 (0.5) | 6.4 (0.6) | 5.3 (0.3) | 6.2 (0.5) | 0.0088 |
| Citrate mg/24hr | 618 (304) | 214 (239) | 459 (220) | 378 (202) | 738 (298) | 292 (400) | 0.0007 |
| Sulfate mmol/24hr | 17 (8) | 11 (4) | 17 (4) | 16 (6) | 21 (7) | 14 (7) | 0.12 |
| Volume mL | 2046 (802) | 1798 (878) | 1797 (738) | 2040 (929) | 1294 (488) | 2393 (914) | 0.33 |
| CaOx SS (DG) | 1.4 (0.8) | 1.6 (0.7) | 1.9 (0.4) | 1.8 (0.3) | 0.9 (1.6) | 1.4 (0.8) | 0.59 |
| Brushite SS (DG) | −0.3 (1.3) | −1.1 (1.2) | 1.0 (0.8) | 0.6 (1.0) | −2.3 (0.8) | −0.9 (1.2) | 0.0002 |
| Apatite SS (DG) | 4.1 (2.2) | 2.8 (2.1) | 6.2 (1.4) | 5.2 (2.0) | 0.2 (1.2) | 3.7 (2.8) | 0.0005 |
| Uric Acid SS (DG) | −1.4 (2.8) | −0.7 (3.2) | −2.7 (3.0) | −2.3 (3.5) | 3.7 (1.0) | −2.8 (3.8) | 0.045 |
| Sodium Urate SS (DG) | 0.6 (1.2) | −0.4 (1.3) | 1.1 (0.9) | 0.6 (1.3) | 1.0 (3.0) | 0.1 (0.8) | 0.12 |