Sodium Bicarbonate for Critically Ill Patients With Metabolic Acidosis and Acute Kidney Injury

Trial statusRecruiting
Trial phasePhase 4
Trial typeInterventional
Biological sexAll
Age18+
SponsorUniversität Münster

About this trial

The study investigates whether sodium bicarbonate is able to reduce the occurrence of major adverse kidney events on day 90 (MAKE90) in critically ill patients with metabolic acidosis and acute kidney injury (AKI). While its efficacy in this context has been suggested in a subgroup analysis of the BICAR-ICU trial it has not been confirmed in a double-blinded randomized controlled trial to date.

Eligibility criteria

This trial does not accept healthy volunteers

Qualifiers

Adult ≥ 18 years

Critically ill patients (requiring treatment on an ICU or IMC)

Arterial pH ≤7.25

PaCO2 < 6.5kPa (<49 mmHg)

Disqualifiers

Pregnant or breastfeeding patients

Respiratory acidosis (acute or chronic) [dynamic, and if corrected, patient may be reconsidered for the trial]

Patients on KRT, or KRT immediately indicated and treating clinician(s) unwilling to defer

Deemed unsuitable for KRT

Trial design

Design model

Parallel

Treatments tested in this trial

  • Sodium Bicarbonate 8.4% Solution for Injection

    Drug

    Intravenous infusion according to the treatment algorithm. Infusion starts with 100ml/hr until a pH of 7.30 - 7.35 and a Base Excess of ≥ 0 is reached. Then, infusion is reduced to 25ml/hr and maintained for 5 hours. After 5 hours, infusion is titrated to a pH of \>7.30.

  • Balanced crystalloid solution

    Drug

    Intravenous infusion according to the treatment algorithm. Infusion starts with 100ml/hr until a pH of 7.30 - 7.35 and a Base Excess of ≥ 0 is reached. Then, infusion is reduced to 25ml/hr and maintained for 5 hours. After 5 hours, infusion is titrated to a pH of \>7.30.

Treatment groups

660 Participants
are divided into 2 treatment groups
Group A: Sodium BicarbonateExperimental treatment 1 intervention
Group B: Balanced crystalloid solutionPlacebo comparator 1 intervention

Trial outcomes

Primary outcomes

1

MAKE90 (consisting of mortality, dialysis within 90 days, persistent renal dysfunction (defined as serum creatinine ≥ 2x compared to baseline value at day 90)

Time frame
90 days after randomization

Secondary outcomes

1

90-day all-cause mortality (%)

Time frame
90 days after randomization
2

Elevation of the creatinine level to ≥200% of base value at day 90 (one measurement between day 80 and 120 after randomization)

Time frame
80 - 120 days after randomization
3

Receipt of any form of KRT within the 90-day time period after randomization

Time frame
90 days after randomization
4

KRT-dependence on day 90

Time frame
90 days after randomization

Other outcomes

1

ICU-Mortality (%)

Time frame
90 days after randomization
2

Hospital Mortality (%)

Time frame
90 days after randomization
3

Incidence of suspected unexpected serious adverse reactions (SUSARs)

Time frame
from randomization until the end of treatment phase (up to day 7 OR Discharge from the intensive care unit, whatever comes first
4

KRT-free days up to day 28

Time frame
28 days after randomization

Sponsors and contacts

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Universität Münster

Lead sponsor

German Research Foundation

Collaborator