Effectiveness of Urinary Alkalinizing Agents on Kidney Stone Risk

2019-09-25 06:13:37 | BioPortfolio


Randomized treatment trial of baking soda, UrocitK, or LithoLyte to determine if baking soda and Litholyte are as effective as UrocitK in raising 24 hour urine citrate and pH.


Participants will not be required to attend any study visits outside of normal clinical encounters. Participants enrolled in the study will be randomized to treatment upon enrollment. Blocked randomization will be conducted, utilizing sex (M/F) and recurrent stone former (Y/N) as algorithm variables. Participants randomized to potassium citrate will be provided a prescription for 40 mEq potassium citrate and will be provided the usual instructions on how to take it (potassium citrate has been used for decades in clinical care of patients with stones; thus, standard instructions will be provided). This is usually in divided doses (such as 20 mEq twice daily) with meals. Participants randomized to LithoLyte® will be provided 40 mEq of alkali in the form of LithoLyte® and advised to take 20 mEq twice daily according to package instructions, once in morning and once at bedtime; no requirements about proximity to meals are necessary. Participants randomized to baking soda will be provided instructions for using baking soda to provide 40 mEq alkali, to be accomplished by dissolving ¼ teaspoon baking soda in water or other beverage (any amount) in the morning on an empty stomach and ½ teaspoon baking soda in water or other beverage again at bedtime, also on an empty stomach. The 24-hour urine results that are available upon enrollment will be used for pre-intervention values. The 24-hour results from each participant's followup clinic encounter, which is 3 months post initiation of treatment, will be used for post-intervention values. Thus, no extra encounters are required for participation in the study. Additionally, no extra tests are required for participation in the study as participants would normally complete a post-treatment 24-hour urine collection anyway. Participants will be screened for eligibility as described above, i.e., by pre-clinic review of schedules and 24-hour urine results. Only those meeting inclusion criteria will be invited to participate and enrolled, provided that informed consent is provided by signing the signature page of the consent/authorization form. The treatment/intervention period is 90 days (approximately 3 months). However, it should be noted that, as these are clinical interventions that would be prescribed or recommended anyway, it is expected that participants will continue treatment indefinitely and under supervision of urology and/or Metabolic Stone Clinic providers. If the participant has failed the randomized therapy they are assigned to, they will be clinically assigned a different treatment option (one of the remaining two) and continue to be followed up per study protocol. Participants will also be asked to complete a medication questionnaire and log, as well as the Wisconsin Stone Quality of Life (WISQOL) questionnaire. All study procedures are considered standard of care, except for: randomization into treatment and the medication questionnaire and log.

Study Design


Kidney Stone


Baking Soda, LithoLyte, Urocit K


United States


Enrolling by invitation


University of Wisconsin, Madison

Results (where available)

View Results


Published on BioPortfolio: 2019-09-25T06:13:37-0400

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Medical and Biotech [MESH] Definitions

A genus of coccoid, extremely halophilic HALOBACTERIACEAE which grows in alkaline conditions. They are nonmotile and strictly aerobic and are found in soda lakes, alkaline salterns, and soda soils.

A genus of rod-shaped, extremely halophilic HALOBACTERIACEAE which grows in alkaline conditions. They are strictly aerobic and some strains are motile. Natronobacterium is found in soda lakes, alkaline salterns, and soda soils.

A complication of kidney diseases characterized by cell death involving KIDNEY PAPILLA in the KIDNEY MEDULLA. Damages to this area may hinder the kidney to concentrate urine resulting in POLYURIA. Sloughed off necrotic tissue may block KIDNEY PELVIS or URETER. Necrosis of multiple renal papillae can lead to KIDNEY FAILURE.

A severe pain in the lower back radiating to the groin, scrotum, and labia which is most commonly caused by a kidney stone (RENAL CALCULUS) passing through the URETER or by other urinary track blockage. It is often associated with nausea, vomiting, fever, restlessness, dull pain, frequent urination, and HEMATURIA.

The outer zone of the KIDNEY, beneath the capsule, consisting of KIDNEY GLOMERULUS; KIDNEY TUBULES, DISTAL; and KIDNEY TUBULES, PROXIMAL.

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