Incremental Hemodialysis: The TwoPlus Trial

Trial statusRecruiting
Trial phaseNot applicable
Trial typeInterventional
Biological sexAll
Age18+
SponsorWake Forest University Health Sciences

About this trial

This study is to prospectively compare clinical effectiveness between clinically- matched incremental hemodialysis and conventional hemodialysis in patients with incident kidney dysfunction requiring dialysis and residual kidney function.

The study will enroll 350 patients on chronic hemodialysis and 140 caregivers of enrolled patients. Patients will be randomized in 1:1 ratio to either incremental start hemodialysis or conventional hemodialysis. Caregivers will be followed along with patients for an average period of 2 years post randomization.

Eligibility criteria

This trial does not accept healthy volunteers

Qualifiers

Age ≥ 18 years

Incident kidney dysfunction requiring dialysis (KDRD) started on maintenance, in-center hemodialysis (HD), or anticipated to be started on maintenance, in-center HD within the next 12 weeks

Has received ≤36 sessions of intermittent HD (i.e., on HD for ≤12 weeks) at the time patient is approached for potential study participation

Kidney urea clearance ≥ 2.0 mL/min

Disqualifiers

Pre-HD serum K ≥5.8 mEq/L, Na ≤125 mEq/L, or bicarbonate level ≤17 mEq/L

Requirement or anticipated requirement of high-volume ultrafiltration

Unable or unwilling to follow the study protocol for any reason

Known pregnancy or planning to attempt to become pregnant or lactating women

Trial design

Design model

Parallel

Treatments tested in this trial

  • Hemodialysis twice weekly

    Device

    Frequency and duration of hemodialysis is tailored to the patient. Adjuvant pharmacotherapy is prescribed to maintain volume, electrolyte and acid-base homeostasis ( e.g., diuretics, sodium bicarbonate and potassium binding patiromer)

  • Hemodialysis thrice weekly

    Other intervention

    Conventional hemodialysis regimen

Treatment groups

350 Participants
are divided into 2 treatment groups
Group A: Clinically-matched Incremental Hemodialysis ( CMIHD)Experimental treatment 1 intervention
Group B: Conventional Hemodialysis (CHD)Active comparator 1 intervention

Trial outcomes

Primary outcomes

1

Number of Clinical events of safety

composite of all-cause Emergency Department visits, hospitalizations, or death

Time frame
year 2

Secondary outcomes

1

EuroQOL-5D-5L scores Health-related quality of life Health-related quality of life and residual kidney function

Compare the effects of CMIHD and CHD - The descriptive system covers 5 dimensions of health (mobility, self-care, usual activities, pain or discomfort, and anxiety or depression) with 5 levels of severity in each dimension (no problems, slight problems, moderate problems, severe problems, and unable to perform or extreme problems - Values are anchored at 1 (full health) and 0 (a state as bad as being dead) as required by their use in economic evaluation. Values less than 0 represent health states regarded as worse than a state that is as bad as being dead.

Time frame
year 2
2

Trail Making Test B scores Health-related quality of life Health-related quality of life and residual kidney function

Patient participants' cognitive function will be assessed using change in Trail Making Test B score - The Trail Making Test measures your visual attention, mental flexibility, processing speed, and motor speed based on how quickly and accurately you connect dots in ascending order (either numerically or with alternating numbers and letters). The test can be used to diagnose dementia and other cognitive disorders - Higher scores indicate a higher degree of cognitive impairment

Time frame
Baseline and months 6, 12, 18, & 24
3

Standardized Outcomes in Nephrology (SONG) scores Health-related quality of life Health-related quality of life and residual kidney function

SONG-HD Fatigue score - The SONG-HD Fatigue measure consists of three items that assess (1) the effect of fatigue on life participation, (2) tiredness, and (3) level of energy. These dimensions are assessed on a four-point Likert scale indicating increasing severity, ranging from zero (not at all) to three (severely). Higher scores meaning higher severity

Time frame
Baseline and months 6, 12, 18, & 24
4

Time to recover from hemodialysis (HD) Health-related quality of life Health-related quality of life and residual kidney function

Patient-reported functional status and fatigue will be assessed using Time to recover from HD

Time frame
Baseline and monthly up to 2 years

Other outcomes

1

Characterize implementation processes using mixed methods - Intervention characteristics

Process evaluation will include a) Intervention characteristics, to assess organizational readiness to change, intervention acceptability and appropriateness; b) Inner setting characteristics, to assess barriers and facilitators to the adoption of HD intervention at the partnering organizations; c) External factors that mediate implementation; d) Adoption; e) Reach; f) Fidelity, to assess adherence to serial timed urine collection and HD treatment schedule; and g) Sustainability, to assess barriers and facilitators to maintaining intervention

Time frame
2 years
2

Characterize implementation processes using mixed methods - Inner setting characteristics, to assess barriers and facilitators to the adoption of HD intervention at the partnering organizations

Process evaluation will include a) Intervention characteristics, to assess organizational readiness to change, intervention acceptability and appropriateness; b) Inner setting characteristics, to assess barriers and facilitators to the adoption of HD intervention at the partnering organizations; c) External factors that mediate implementation; d) Adoption; e) Reach; f) Fidelity, to assess adherence to serial timed urine collection and HD treatment schedule; and g) Sustainability, to assess barriers and facilitators to maintaining intervention

Time frame
2 years
3

Characterize implementation processes using mixed methods - External factors that mediate implementation

Process evaluation will include a) Intervention characteristics, to assess organizational readiness to change, intervention acceptability and appropriateness; b) Inner setting characteristics, to assess barriers and facilitators to the adoption of HD intervention at the partnering organizations; c) External factors that mediate implementation; d) Adoption; e) Reach; f) Fidelity, to assess adherence to serial timed urine collection and HD treatment schedule; and g) Sustainability, to assess barriers and facilitators to maintaining intervention

Time frame
2 years
4

Characterize implementation processes using mixed methods - Adoption

Process evaluation will include a) Intervention characteristics, to assess organizational readiness to change, intervention acceptability and appropriateness; b) Inner setting characteristics, to assess barriers and facilitators to the adoption of HD intervention at the partnering organizations; c) External factors that mediate implementation; d) Adoption; e) Reach; f) Fidelity, to assess adherence to serial timed urine collection and HD treatment schedule; and g) Sustainability, to assess barriers and facilitators to maintaining intervention

Time frame
2 years

Sponsors and contacts

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Wake Forest University Health Sciences

Lead sponsor

Patient-Centered Outcomes Research Institute

Collaborator