Hypertonic sodium lactate infusion reduces vasopressor requirements and biomarkers of brain and cardiac injury after experimental cardiac arrest.

Abstract

INTRODUCTION:

Prognosis after resuscitation from cardiac arrest (CA) remains poor, with high morbidity and mortality as a result of extensive cardiac and brain injury and lack of effective treatments. Hypertonic sodium lactate (HSL) may be beneficial after CA by buffering severe metabolic acidosis, increasing brain perfusion and cardiac performance, reducing cerebral swelling, and serving as an alternative energetic cellular substrate. The aim of this study was to test the effects of HSL infusion on brain and cardiac injury in an experimental model of CA.

METHODS:

After a 10-min electrically induced CA followed by 5 min of cardiopulmonary resuscitation maneuvers, adult swine (n = 35) were randomly assigned to receive either balanced crystalloid (controls, n = 11) or HSL infusion started during cardiopulmonary resuscitation (CPR, Intra-arrest, n = 12) or after return of spontaneous circulation (Post-ROSC, n = 11) for the subsequent 12 h. In all animals, extensive multimodal neurological and cardiovascular monitoring was implemented. All animals were treated with targeted temperature management at 34 °C.

RESULTS:

Thirty-four of the 35 (97.1%) animals achieved ROSC; one animal in the Intra-arrest group died before completing the observation period. Arterial pH, lactate and sodium concentrations, and plasma osmolarity were higher in HSL-treated animals than in controls (p < 0.001), whereas potassium concentrations were lower (p = 0.004). Intra-arrest and Post-ROSC HSL infusion improved hemodynamic status compared to controls, as shown by reduced vasopressor requirements to maintain a mean arterial pressure target > 65 mmHg (p = 0.005 for interaction; p = 0.01 for groups). Moreover, plasma troponin I and glial fibrillary acid protein (GFAP) concentrations were lower in HSL-treated groups at several time-points than in controls.

CONCLUSIONS:

In this experimental CA model, HSL infusion was associated with reduced vasopressor requirements and decreased plasma concentrations of measured biomarkers of cardiac and cerebral injury.

• Authors: Filippo Annoni, Fuhong Su, Lorenzo Peluso, Ilaria Lisi, Enrico Caruso, Francesca Pischiutta, Elisa Gouvea Bogossian, Bruno Garcia, Hassane Njimi, Jean-Louis Vincent, Nicolas Gaspard, Lorenzo Ferlini, Jacques Creteur, Elisa R Zanier, Fabio Silvio Taccone
• Journal: Critical care (London, England) (Crit Care) Vol. 27 Issue 1 Pg. 161 (04 22 2023) ISSN: 1466-609X [Electronic] England
• PMID: 37087454 (Publication Type: Journal Article)
• Copyright: © 2023. The Author(s).

Chemical References

• Sodium Lactate
• Vasoconstrictor Agents
• Biomarkers

Topics

• Animals
• Swine
• Cardiopulmonary Resuscitation
• Sodium Lactate (pharmacology, therapeutic use)
• Heart Arrest (complications, drug therapy)
• Vasoconstrictor Agents
• Brain (metabolism)
• Heart Injuries
• Biomarkers (metabolism)
• Disease Models, Animal