Table 1.

Changes in 24-hour urine parameters in prospective studies of patients who have undergone bariatric surgery

StudyProcedureNTime to FU (mo)Sex (n M/F)CaOx SSOxalateCalciumCitrateVolume
Park et al. (50)RYGB456–128/37
Duffey et al. (55)RYGB21245/16No changeNo change
Kumar et al. (52)RYGB/BPD11120/11No changeNo changeNo changeNo change
Wu et al. (54)RYGB3867/31No change
Valezi et al. (53)RYGB1511242/109Not reported
Agrawal et al. (43)RYGB1362/11No changeNo change
Moreland et al. (57)RYGB26129/17No changeNo changeNot reportedNot reportedNot reported
  • Patients were studied before bariatric surgery and at the specified time point postoperatively. Most patients were nonstone formers. FU, follow-up; M, male; F, female; CaOx SS, calcium oxalate supersaturation; RYGB, Roux-en-y gastric bypass; BPD, biliopancreatic diversion with duodenal switch.