Night Time Use of Thiazide Diuretics for Improved Reduction in Stone Risk in Stone Formers With E… (NCT02711670) | Clinical Trial Compass
CompletedNot Applicable
Night Time Use of Thiazide Diuretics for Improved Reduction in Stone Risk in Stone Formers With Elevated Urine Calcium
United States10 participantsStarted 2014-02
Plain-language summary
Thiazide diuretics will be more effective in lowering urine calcium excretion if taken at night as compared to the daytime. It will therefore be more effective in reducing kidney stone recurrence in nephrolithiasis patients with elevated urine calcium who are known to have increased risk of kidney stones at night time.
Who can participate
Age range
18 Years – 80 Years
Sex
ALL
See this in plain English?
AI-rewrites the medical criteria so a patient or caregiver can understand them. Always confirm with the trial site.
Inclusion Criteria:
* Patients with recurrent calcium kidney stones (at least 2 episodes) and either a higher urine calcium excretion (urine Ca \>200 mg/d or \> 4 mg/kg body weight) or,
* In patients who currently take a thiazide diuretic, a history of elevated urine calcium prior to medication use;
* Also capable of signing consent and doing 24-hour urine collections repeatedly.
Exclusion Criteria:
* Patients with primary hyperparathyroidism, renal tubular acidosis, chronic kidney disease (serum creatinine \> 1.5 mg/dl), inflammatory bowel disease, gout,
* Patients taking thiazides with a history of hypertension,
* Patients with baseline systolic blood pressure less than 110mmHg
Questions worth asking your doctor
Bring these to your next appointment. They're a starting point for a shared conversation — not a sign you qualify or a recommendation to enrol.
1Based on my diagnosis and history, is this trial worth exploring for me — or is there a standard treatment we should try first?
2What does this trial's phase tell us about how much is already known about its safety and benefit?
3What would taking part actually involve for me — visits, tests, time, and travel?
4What are the known and possible risks or side effects I should weigh, and how would they be monitored?
5If this trial isn't the right fit, what other options or trials would you suggest I look into?
Generated to help you prepare — always confirm anything about your own eligibility and care with the study team and your doctor.
Questions for the trial coordinator
The trial coordinator is the person who runs the study day to day. These cover the practical side — logistics, costs, and what taking part would actually mean for your life. The study team confirms whether you meet the criteria; these are questions to ask, not a sign you qualify.
1What does taking part actually involve week to week — how many visits, where, and how long does each one take?
2What costs are covered by the study, and what might I have to pay for myself, including travel, parking, or time off work?
3What happens during screening, and what happens if the study team confirms I don't meet the criteria after those tests?
4Who pays for the scans, blood work, and other tests the trial requires — the study, my insurance, or me?
5How will being in the trial affect my regular care, and will my own doctor stay informed and involved?
6Can I leave the trial at any point if I change my mind, and what would happen to my care if I do?
A starting point for the conversation — always confirm anything about your own eligibility, costs, and care with the study team and your doctor.
What they're measuring
1
Change in excretion and supersaturation of urine calcium oxalate / phosphate