Kidney Stone
Conditions
Brief summary
The purpose of this investigation is to prospectively evaluate the benefit of different methods of educating patients regarding their fluid intake through a readily available daily cellular phone application to improve overall urine output and reduce risk factors for stone recurrence.
Detailed description
The prevalence of kidney stone disease in the United States is increasing. Recurrence of kidney stone disease has been reported as high as 50% at five years. Urine supersaturation is a predominant factor in the formation of crystallization and stone disease and is dependent on fluid volume. High fluid consumption that dilutes the urine has been shown both in vitro and in clinical studies to reduce the tendency for stone crystallization as well as effectively decrease stone recurrence. As a result, water intake greater than two liters per day is a common initial therapy for prevention of stone disease. However, studies have shown that despite physician counseling most patients are only able to modestly increase their urine volume through fluid intake. This finding may be due to a discrepancy in patient perception of their actual fluid intake and resulting urine volume. The purpose of this investigation is to prospectively evaluate the benefit of different methods of educating patient regarding their fluid intake through a readily available daily cellular phone application to improve overall urine output and reduce risk factors for stone recurrence.
Interventions
BEHAVIORALiPhone Application
The iPhone application waterlogged will be used by participants using and iPhone cellular device. This application will be used to track daily fluid intake for 1 week.
BEHAVIORALAndroid Application
The Android application water my body will be used by participants using an Android cellular device. This application will be used to track daily fluid intake for 1 week.
Sponsors
University of North Carolina, Chapel Hill
Study design
Observational model
COHORT
Time perspective
PROSPECTIVE
Eligibility
Sex/Gender
ALL
Age
18 Years to No maximum
Healthy volunteers
No
Inclusion criteria
1. Patients ≥ 18 years old 2. Seen in urology or nephrology clinic at UNC with a diagnosis of kidney stone 3. Prior 24-hour urine result with volume less than 2 to 2.5 liters
Exclusion criteria
1. Patient without cellular phone capable of utilizing Android / Apple application 2. Patient already using some form of monitoring fluid intake / volume 3. Inability to take fluid by mouth 4. Patient with urinary diversion, chronic diarrhea, bowel diversion or other forms of excessive fluid loss 5. Inability to obtain informed consent 6. Non-English speaking
Design outcomes
Primary
| Measure | Time frame |
|---|---|
| 24-hour urine volume | 7-10 days from baseline |
Secondary
| Measure | Time frame |
|---|---|
| Actual 24-hour urine volume vs. patient perceived urine volume | 7-10 days from baseline |
| Ease and interest in monitoring fluid intake based on survey data | 7-10 days from baseline |
Other
| Measure | Time frame |
|---|---|
| 24-hour urine volume for study participants vs. urine volume for retrospective cohort of previously treated kidney stone patients | 7-10 days from baseline |
Countries
United States
Outcome results
None listed