Sodium Bicarbonate for In-Hospital Cardiac Arrest: A Randomized Clinical Trial.
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Granfeldt Asger, Kirkegaard Bertram Lahn, Vallentin Mikael Fink, Holmberg Mathias J, Stankovic Nikola, Lind Peter Carøe, Kjærgaard Anders Gade, Houe Nanna, Vested Matias, Isbye Dan Lou, Kristensen Camilla Meno, Kjærgaard Jesper, Zwisler Stine Thorhauge, Lundsfryd Søren Nygaard, Petersen Louise Breum, Folke Fredrik, Hansen Carolina Malta, Iversen Kasper Karmark, Schou Morten, Wiberg Sebastian, Riddersholm Signe Juul, Rasmussen Bodil Steen, Karlsson Kristine, Plovsing Ronni R, Juhl Christian Svendsen, Krag Mette, Sørensen Christian Dalby, Kuhne-Qvist Peter, Oxlund Jakob, Sølling Christoffer Grant, Hansen Jacob Robsahm, Andersen Lars Peter Kloster, Jensen Jimmi Malmberg Scheel, Itenov Theis Skovsgaard, Lauritzen Marlene, Pedersen Malthe Jessen, Nielsen Rasmus Philip, Fjeldsøe-Nielsen Hans, Mirzada Naqibullah, Secher Niels, Espelund Ulrick Skipper, Eskol Jennifer Rosenkjær, Andersen Kasper, Brøchner Anne Craveiro, Nedergaard Helene Korvenius, Hansen Peter Martin, Henschel Wiebke, Walli Akil Raad, Sandgaard Michael, Asferg Camilla Lundegaard, Ciubotariu Andrei, Rasmussen Maria Holm Rosenberg, Le Breton Victor, Nielsen Lykke Kjærgaard, Hansen Frederik Gautier, Brændstrup Niklas, Thomsen Ida Katrine, Sindberg Birthe, Andersen Lars Wiuff, Bicarbonate for In-Hospital Cardiac Arrest (BIHCA) Investigators
Аннотация
OBJECTIVE: To determine whether administration of sodium bicarbonate during in-hospital cardiac arrest increases the proportion of patients with return of spontaneous circulation.
DESIGN, SETTING, AND PARTICIPANTS: Randomized, parallel-group, double-blind, placebo-controlled clinical trial conducted at 21 hospitals in Denmark. Participants were adults with in-hospital cardiac arrest, who received at least 1 dose of epinephrine. Patients were enrolled from February 6, 2023, to February 11, 2026, with the last 90-day follow-up conducted on May 4, 2026. Final statistical analysis was conducted on May 5, 2026.
INTERVENTION: Sodium bicarbonate (up to 100 mmol) or placebo intravenously.
MAIN OUTCOMES AND MEASURES: The primary outcome was sustained return of spontaneous circulation. Key secondary outcomes were survival at 30 days and survival at 30 days with a favorable neurologic outcome, defined by a score of 0 to 3 on the modified Rankin Scale (scores range from 0 to 6, with higher scores indicating greater disability).
RESULTS: A total of 2913 patients with in-hospital cardiac arrest were screened; 913 patients were randomized, of which 779 were eligible for the primary analyses, with 372 randomized to receive sodium bicarbonate and 407 randomized to receive placebo. The median (IQR) age of patients was 73 (64-79) years and 502 were male (64%). Sustained return of spontaneous circulation occurred in 146 patients (39%) in the sodium bicarbonate group and 150 (37%) in the placebo group (risk ratio, 1.05 [95% CI, 0.88-1.24]; P = .62). At 30 days, 45 patients (12%) in the sodium bicarbonate group and 37 (9.1%) in the placebo group were alive (risk ratio, 1.25 [95% CI, 0.84-1.88]); a favorable neurologic outcome at 30 days occurred in 30 patients (8.1%) and 22 patients (5.4%), respectively (risk ratio, 1.39 [95% CI, 0.82-2.34]). Alkalosis and hypernatremia after cardiac arrest were more common in the sodium bicarbonate group.
CONCLUSIONS AND RELEVANCE: There was no significant difference in sustained return of spontaneous circulation between sodium bicarbonate and placebo in adults with in-hospital cardiac arrest. These findings do not support routine administration of sodium bicarbonate for patients with in-hospital cardiac arrest.
TRIAL REGISTRATION: ClinicalTrials.gov Identifier: NCT05564130; ClinicalTrialsRegister.eu Identifier: 2022-501304-10-00.