Dietary Potassium Liberalization in Pre-Dialysis Patients
Dietary Potassium Liberalization With Fruit and Vegetables Versus Potassium Restriction in People With Chronic Kidney Disease (DK-Lib CKD) Trial
University of Manitoba
30 participants
Jan 15, 2024
INTERVENTIONAL
Conditions
Summary
The study will look at the impact of the potassium content in fruits and vegetables, on serum potassium concentrations in people with Chronic Kidney Disease (CKD) using a randomized crossover design. Participants will receive home delivery of fruit and vegetables with either higher or lower potassium content in a random order. Clinical chemistry markers from blood and urine samples, blood pressure, physical functioning and health related quality of life will be assessed throughout the duration of the trial. This study will also measure their physical functioning, using a chair stand test. The results of this study could change the dietary recommendations for people with CKD related to potassium.
Eligibility
Inclusion Criteria7
- Male or female, aged 18 years or above
- Participants who have an estimated glomerular filtration rate between 15 and 45 ml/min/1.73m2
- Serum potassium concentration between 4.5 and 5.5 milliequivalent (mEq)/L
- Hemoglobin A1c ≤ 11%
- Systolic and diastolic blood pressure \<160/100 mmHg
- Are registered in the multidisciplinary nephrology clinic in Winnipeg
- Able to communicate in English and provide written informed consent
Exclusion Criteria8
- Serum potassium concentration \> 5.6 mEq/L, anuria, dialysis, or acute kidney injury failure in the 6 months prior to screening
- Chronic obstructive pulmonary disease that requires the participant to be on oxygen
- New York Heart Association Class 3-4 Heart symptoms or heart, liver or renal transplant
- A myocardial infarction or stroke within the last 6 months
- Unable to consume study treatments or control, such as swallowing or gastro-intestinal issues
- Currently on potassium binding therapy
- In the opinion of the investigator any medical condition, uncontrolled systemic disease or concurrent illness that would decrease the study compliance or jeopardize the safety of the participant
- Female participant who is pregnant or lactating
Interventions
On the liberalized dietary potassium intervention, participants will receive groceries delivered to their houses that contain potassium rich fruit and vegetables, that contain more than 250 mg of potassium per typical serving. Participants will be instructed to incorporate the fruit and vegetables into their diet targeting a daily intake of 2000 mg of potassium a day from delivered fruit and vegetables, and a daily dietary potassium intake of 3500 mg.
Participants will receive weekly supplementation of lower potassium fruit and vegetables, that deliver less than 200 mg of potassium per typical serving. Participants will be instructed to incorporate the fruit and vegetables into their diet targeting a daily intake of 500 mg of K a day from the box, and a daily dietary K intake \< 2000 mg. Participants will receive counselling from a registered dietician (RD) to reinforce the potassium restriction.
Locations(2)
View Full Details on ClinicalTrials.gov
For the most up-to-date information, visit the official listing.
NCT05090865