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Zaballos M, Fernández I, Melone A, Rodríguez L, Varela O, García S, Quintela O, Vazquez E, Anadón MJ, Almendral J. Sodium bicarbonate reverts electrophysiologic cardiotoxicity of ropivacaine faster than lipid emulsions in a porcine model. Basic Clin Pharmacol Toxicol 2023; 132:211-222. [PMID: 36479999 PMCID: PMC10107242 DOI: 10.1111/bcpt.13822] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/11/2022] [Revised: 11/09/2022] [Accepted: 11/30/2022] [Indexed: 12/13/2022]
Abstract
Ropivacaine has been described as a safer local anaesthetic (LA); however, serious cardiotoxic accidents have been reported. Intravenous-lipid-emulsion (ILE) therapy during LA intoxication seems to act as an antidote. Sodium bicarbonate is the standard treatment for sodium channel blocker drug toxicity. We compared both antidotes on the reversion of electrophysiologic toxicity induced by ropivacaine. Ropivacaine 5 mg kg-1 was administered in 24 pigs, and 3 min later, the animals received ILE: 1.5 ml kg-1 + 0.25 ml kg-1 min-1 (ILE group); sodium bicarbonate: 2 mEq kg-1 + 1 mEq kg-1 h-1 (NaHCO3 group); saline solution (CTL group). Electrophysiological parameters were evaluated for 30 min. The area under the curve (AUC) for the first 5 or 30 min was compared between groups. Ropivacaine induced a lengthening of the PR interval by 17% (P = 0.0001), His-ventricle-interval by 58% (P = 0.001), sinus QRS complex by 56% (P = 0.0001), paced QRS at 150 bpm by 257% (P = 0.0001), and at 120 bpm by 143% (P = 0.0001) in all groups. At 5 min after treatment, sinus QRS in the NaHCO3 group was shorter than that in the CTL group (AUCQRS5 , P = 0.003) or ILE group (AUCQRS5 , P = 0.045). During the first minute, seven of the animals in the NaHCO3 group vs. two in the ILE or 0 in the CTL group recovered more than 30% of the sinus QRS previously lengthened by ropivacaine (P = 0.003). Sodium bicarbonate reversed the electrophysiological toxicity of ropivacaine faster than ILE and control groups.
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Affiliation(s)
- Matilde Zaballos
- Department of Toxicology, Faculty of Medicine, Complutense University, Madrid, Spain.,Department of Anaesthesiology, Hospital General Universitario Gregorio Marañón, Madrid, Spain
| | - Ignacio Fernández
- Department of Anaesthesiology, Hospital General Universitario Gregorio Marañón, Madrid, Spain
| | - Arturo Melone
- Department of Anaesthesiology, Hospital General Universitario Gregorio Marañón, Madrid, Spain
| | - Lucía Rodríguez
- Department of Anaesthesiology, Hospital General Universitario Gregorio Marañón, Madrid, Spain
| | - Olalla Varela
- Department of Anaesthesiology, Hospital General Universitario Gregorio Marañón, Madrid, Spain
| | - Sergio García
- Department of Anaesthesiology, Hospital General Universitario Gregorio Marañón, Madrid, Spain
| | - Oscar Quintela
- Department of Toxicology, Faculty of Medicine, Complutense University, Madrid, Spain.,National Institute of Toxicology and Forensic Science, Madrid, Spain
| | - Elena Vazquez
- Hospital General Universitario Gregorio Marañón, Madrid, Spain
| | | | - Jesús Almendral
- Director of the Electrophysiology Laboratory and Arrhythmia Unit, Hospital Monteprincipe, Grupo HM Hospitales, University CEU-San Pablo, Madrid, Spain
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Tikhomirov M, Jajor P, Śniegocki T, Poźniak B. Predicting the efficacy of opioid sequestration by intravenous lipid emulsion using biologically relevant in vitro models of drug distribution. Sci Rep 2022; 12:18683. [PMID: 36333363 PMCID: PMC9636243 DOI: 10.1038/s41598-022-21790-4] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/11/2022] [Accepted: 10/04/2022] [Indexed: 11/06/2022] Open
Abstract
Intravenous lipid emulsions (ILE), among other uses, are utilized in the treatment of poisonings caused by lipophilic substances. The body of evidence regarding the benefits of this treatment is growing but information about opioids-ILE interaction is still very scarce. In this work, the impact of ILE on the distribution of buprenorphine, fentanyl and butorphanol used in various concentrations (100-500 ng/ml) was investigated. Two different in vitro models were used: disposition of the drugs in plasma after ultracentrifugation and distribution into the simulated biophase (cell monolayer of 3T3 fibroblasts or J774.E macrophages). We confirmed the ability of ILE to sequester the three drugs of interest which results in their decrease in the aqueous part of the plasma by 34.2-38.2%, 11.7-28.5% and 6.0-15.5% for buprenorphine, fentanyl and butorphanol, respectively. Moreover, ILE affected the drug distribution to the biophase in vitro, however, in this case the drug concentration in cells decreased by 97.3 ± 3.1%, 28.6 ± 5.4% and 13.0 ± 7.5% for buprenorphine, fentanyl and butorphanol, respectively. The two models revealed notable differences in ILE's potential for drug sequestration, especially for buprenorphine. Similar, but not as pronounced tendencies were observed for the two other drugs. These discrepancies may result from the difference in protein abundance and resulting drug-protein binding in both systems. Nevertheless, the results obtained with both in vitro models correlated well with the partition coefficient (logP) values for these drugs.
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Affiliation(s)
- Marta Tikhomirov
- grid.411200.60000 0001 0694 6014Faculty of Veterinary Medicine, Department of Pharmacology and Toxicology, Wroclaw University of Environmental and Life Sciences, 50-375 Wrocław, Poland
| | - Paweł Jajor
- grid.411200.60000 0001 0694 6014Faculty of Veterinary Medicine, Department of Pharmacology and Toxicology, Wroclaw University of Environmental and Life Sciences, 50-375 Wrocław, Poland
| | - Tomasz Śniegocki
- grid.419811.4Department of Pharmacology and Toxicology, National Veterinary Research Institute, 24-100 Puławy, Poland
| | - Błażej Poźniak
- grid.411200.60000 0001 0694 6014Faculty of Veterinary Medicine, Department of Pharmacology and Toxicology, Wroclaw University of Environmental and Life Sciences, 50-375 Wrocław, Poland
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Kryshtal DO, Dawling S, Seger D, Knollmann BC. In Vitro Studies Indicate Intravenous Lipid Emulsion Acts as Lipid Sink in Verapamil Poisoning. J Med Toxicol 2017; 12:165-71. [PMID: 26553277 DOI: 10.1007/s13181-015-0511-y] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/24/2023] Open
Abstract
Intravenous lipid emulsion (ILE), a component of parenteral nutrition, consists of a fat emulsion of soy bean oil, egg phospholipids, and glycerin. Case reports suggest that ILE may reverse hypotension caused by acute poisoning with lipophilic drugs such as verapamil, but the mechanism remains unclear. The methods used are the following: (1) measurement of ILE concentration in serum samples from a patient with verapamil poisoning treated with ILE, (2) measurement of free verapamil concentrations in human serum mixed in vitro with increasing concentrations of ILE, and (3) measurement of murine ventricular cardiomyocyte L-type Ca(2+) currents, intracellular Ca(2+), and contractility in response to verapamil and/or ILE. Maximum patient serum ILE concentration after infusion of 1 L ILE over 1 h was approximately 1.6 vol%. In vitro GC/MS verapamil assays showed that addition of ILE (0.03-5.0 vol%) dose-dependently decreased the free verapamil concentration in human serum. In voltage-clamped myocytes, adding ILE to Tyrode's solution containing 5 μM verapamil recovered L-type Ca(2+) currents (ICa). Recovery was concentration dependent, with significant ICa recovery at ILE concentrations as low as 0.03 vol%. ILE had no effect on ICa in the absence of verapamil. In field-stimulated intact ventricular myocytes exposed to verapamil, adding ILE (0.5 %) resulted in a rapid and nearly complete recovery of myocyte contractility and intracellular Ca(2+). Our in vitro studies indicate that ILE acts as a lipid sink that rapidly reverses impaired cardiomyocyte contractility in the continued presence of verapamil.
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Affiliation(s)
- Dmytro O Kryshtal
- Department of Medicine, Division of Clinical Pharmacology, Vanderbilt University, Medical Research Building IV, Rm. 1265, 2215B Garland Ave, Nashville, TN, 37232-0575, USA
| | - Sheila Dawling
- Department of Pathology, Vanderbilt University, Nashville, TN, USA
| | - Donna Seger
- Department of Medicine, Division of Clinical Pharmacology, Vanderbilt University, Medical Research Building IV, Rm. 1265, 2215B Garland Ave, Nashville, TN, 37232-0575, USA
| | - Bjorn C Knollmann
- Department of Medicine, Division of Clinical Pharmacology, Vanderbilt University, Medical Research Building IV, Rm. 1265, 2215B Garland Ave, Nashville, TN, 37232-0575, USA.
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