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Tang M, Nunna N, Zhong Q. Amiodarone-Induced Anaphylaxis. J Pharm Pract 2025; 38:168-179. [PMID: 39137364 DOI: 10.1177/08971900241273241] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 08/15/2024]
Abstract
Background: Amiodarone-induced anaphylaxis is seldom reported. The mechanism of this anaphylaxis is unknown. Methods: A literature search was carried out with keywords "Amiodarone" and "Anaphylaxis" and "polysorbate 80" or "hypotension." A search using "amiodarone" in the FDA Adverse Event Reporting System (FAERS) from 1969 to 2024 was also conducted. Results: There are a total of 10 cases of amiodarone-induced anaphylaxis in the literature. Six patients were male. Ages ranged from 15 to 86 years old. Nine cases were triggered by intravenous injection (IV) and one by oral administration. Eight patients did not have previous exposure to amiodarone. The trigger times for IV amiodarone were immediate to 90 minutes. All nine cases of IV amiodarone resulted in hypotension (90%), with an immeasurable blood pressure (70%). Presentations included bronchospasm or a skin rash (60%), angioedema (40%), and unconsciousness (20%). Only one patient had a history of allergy to penicillin and sulfonamide. An amiodarone skin test was positive on one patient. Increased blood tryptase (4 cases), positive basophil activation test to amiodarone (2 cases), increased eosinophil count (1 case), and increased serum IgE (1 case) were reported. Amiodarone was terminated in 80% of the patients. Epinephrine, norepinephrine, antihistamine-1, or steroids were used to rescue patients. Four patients were intubated. All patients fully recovered. In the FAERS database, 89 cases of amiodarone-associated anaphylaxis were reported, resulting in 14 deaths. Conclusions: Solvent polysorbate 80, amiodarone, and iodide may contribute to amiodarone-induced anaphylaxis. Prompt treatment is the key to saving patients.
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Affiliation(s)
- Michelle Tang
- Department of Biomedical Sciences, Rocky Vista University College of Osteopathic Medicine, Ivins, UT, USA
| | - Nitya Nunna
- Department of Biomedical Sciences, Rocky Vista University College of Osteopathic Medicine, Ivins, UT, USA
| | - Qing Zhong
- Department of Biomedical Sciences, Rocky Vista University College of Osteopathic Medicine, Ivins, UT, USA
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Kiwitz D, Markert C, Dörfelt R. Clinical effects and adverse effects of intravenous lipid emulsion treatment in dogs and cats with suspected poisoning. PLoS One 2024; 19:e0298828. [PMID: 38809887 PMCID: PMC11135785 DOI: 10.1371/journal.pone.0298828] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/26/2023] [Accepted: 01/30/2024] [Indexed: 05/31/2024] Open
Abstract
This retrospective study aimed to evaluate the effects on the clinical signs of poisoning and adverse effects of intravenous lipid emulsion treatment in 82 animals (dogs and cats) with suspected poisonings over 18 months. Physical examination parameters and state of consciousness were documented every hour after the intravenous administration of a bolus of 2 ml/kg and 0.25 ml/kg/min over 60 minutes of a 20% intravenous lipid emulsion. The modified Glasgow coma scale and laboratory findings (blood gas analysis, triglyceride, lactate) were evaluated initially and three hours after discontinuing intravenous lipid emulsion administration. A statistical evaluation of the occurrence of adverse effects and the development of laboratory values was performed. A decrease in respiratory rate in the second control (8-12 hours) after ILE was observed. Three hours after completing of the intravenous lipid emulsion, triglyceride concentration increased about 10 times (p <0.001). Venous carbon dioxide partial pressure, bicarbonate, base excess, as well as the electrolytes sodium, potassium and ionized calcium decreased significantly (p <0.001). Patients who experienced a worsening of the modified Glasgow coma scale had a higher increase in triglyceride concentrations (p = 0.041) and plasma lactate (p = 0.034) and a larger decrease in bicarbonate concentrations (p = 0.053) compared to others. About 54% (n = 44) of the patients showed adverse effects which could be attributed to the administration of intravenous lipid emulsion and may be associated with a higher triglyceride increase. All of them were completely reversible within 33 hours. Adverse effects associated with intravenous lipid emulsion therapy were observed in half of the patients and were associated with a higher increase in triglycerides.
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Affiliation(s)
- Dschaniena Kiwitz
- Veterinary Clinic for Small Animals, Tierklinik Hofheim, Tierärzte IVC Evidensia GmbH, Hofheim am Taunus, Hessen, Germany
| | - Carina Markert
- Veterinary Clinic for Small Animals, Tierklinik Hofheim, Tierärzte IVC Evidensia GmbH, Hofheim am Taunus, Hessen, Germany
| | - René Dörfelt
- LMU Small Animal Clinic, LMU München, München, Germany
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3
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Geanacopoulos AT, Zielonka B, Fox MT, Kerr S, Chambers KD, Przybylski R, Burns MM. Pediatric antiarrhythmics and toxicity: A clinical review. J Am Coll Emerg Physicians Open 2024; 5:e13090. [PMID: 38371660 PMCID: PMC10869663 DOI: 10.1002/emp2.13090] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/21/2023] [Revised: 11/24/2023] [Accepted: 11/29/2023] [Indexed: 02/20/2024] Open
Abstract
Antiarrhythmic medications are fundamental in the acute and chronic management of pediatric arrhythmias. Particularly in the pediatric patient population, associated antiarrhythmic toxicities represent important potential adverse effects. Emergency medicine clinicians must be skilled in the detection, workup, and management of antiarrhythmic toxicity. This is a clinical review of the indications, pharmacology, adverse effects, and toxicologic treatment of antiarrhythmics commonly used in the pediatric patient population.
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Affiliation(s)
- Alexandra T. Geanacopoulos
- Division of Emergency MedicineBoston Children's HospitalBostonMassachusettsUSA
- Department of PediatricsHarvard Medical SchoolBostonMassachusettsUSA
| | - Benjamin Zielonka
- Department of PediatricsHarvard Medical SchoolBostonMassachusettsUSA
- Department of CardiologyBoston Children's HospitalBostonMassachusettsUSA
| | - Miriam T. Fox
- Department of PediatricsHarvard Medical SchoolBostonMassachusettsUSA
| | - Sarah Kerr
- Department of PediatricsHarvard Medical SchoolBostonMassachusettsUSA
| | | | - Robert Przybylski
- Department of PediatricsHarvard Medical SchoolBostonMassachusettsUSA
- Department of CardiologyBoston Children's HospitalBostonMassachusettsUSA
| | - Michele M. Burns
- Division of Emergency MedicineBoston Children's HospitalBostonMassachusettsUSA
- Department of PediatricsHarvard Medical SchoolBostonMassachusettsUSA
- Harvard Medical Toxicology ProgramBoston Children's HospitalBostonMassachusettsUSA
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4
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Higashi M, Taharabaru S, Adachi YU, Satomoto M, Tamura T, Matsuda N, Sato-Boku A, Okuda M. Administration of lipid emulsion reduced the hypnotic potency of propofol more than that of thiamylal in mice. Exp Anim 2023; 72:468-474. [PMID: 37271538 PMCID: PMC10658092 DOI: 10.1538/expanim.23-0010] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/17/2023] [Accepted: 05/19/2023] [Indexed: 06/06/2023] Open
Abstract
Administration in a lipid emulsion can modify the pharmacodynamics of drugs via a process known as lipid resuscitation. However, the detailed mechanism remains unclear. We studied the volume and another pharmacodynamic effect, the lipid sink, using propofol and thiamylal. Male adult mice (ddY) were intravenously administered 10 ml/kg propofol or thiamylal diluted with physiological saline, 10% soybean oil, or 20% soybean oil. The 50% effective dose (ED50) for achieving hypnosis was calculated using probit analysis. To investigate the volume effect, 0, 10, or 20 ml/kg of saline or soybean oil was administered, either simultaneously or beforehand. Next, a two- or three-fold dose of the anesthetics was administered and the durations of anesthesia were measured. Finally, at 30 s after the first injection, supplemental soybean oil was administered. The mean (± SE) ED50 values of propofol and thiamylal were 5.79 mg/kg (0.61) and 8.83 mg/kg (0.84), respectively. Lipid dilution increased the ED50 values of both anesthetics. After injection of a dose two-fold the ED50 value, the respective mean (± SD) durations of anesthesia were 125 ± 35 s and 102 ± 38 s. Supplemental administration of soybean oil significantly shortened the duration of anesthesia of propofol, but not that of thiamylal. The results indicate that administration of a lipid emulsion vitiated the anesthetic effect of propofol by reducing the non-emulsified free fraction in the aqueous phase, which may elucidate the lipid resuscitation likely caused by the lipid sink mechanism.
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Affiliation(s)
- Michiko Higashi
- Department of Emergency and Critical Care Medicine, Nagoya University Graduate School of Medicine, 65 Tsurumai-cho, Showa-ku, Nagoya, Aichi 466-8550, Japan
| | - Saori Taharabaru
- Department of Anesthesiology, Aichi Gakuin University School of Dentistry, 2-11 Suemori-dori, Chikusa-ku, Nagoya, Aichi 465-8651, Japan
| | - Yushi U Adachi
- Department of Emergency Medicine, Shizuoka Saiseikai General Hospital, 1-1-1 Oshika, Suruga-ku, Shizuoka 422-8527, Japan
- Saiseikai Research Institute of Health Care and Welfare, 1-4-28 Mita, Minato-ku, Tokyo 1080073, Japan
| | - Maiko Satomoto
- Department of Anesthesiology, Toho University Omori Medical Center, 6-11-1 Omori-nishi, Ohta-ku, Tokyo 1438541, Japan
| | - Takahiro Tamura
- Department of Surgical Intensive Care Medicine, Nagoya University Hospital, 65 Tsurumai-cho, Showa-ku, Nagoya, Aichi 4668550, Japan
| | - Naoyuki Matsuda
- Department of Emergency and Critical Care Medicine, Nagoya University Graduate School of Medicine, 65 Tsurumai-cho, Showa-ku, Nagoya, Aichi 466-8550, Japan
| | - Aiji Sato-Boku
- Department of Anesthesiology, Aichi Gakuin University School of Dentistry, 2-11 Suemori-dori, Chikusa-ku, Nagoya, Aichi 465-8651, Japan
| | - Masahiro Okuda
- Department of Anesthesiology, Aichi Gakuin University School of Dentistry, 2-11 Suemori-dori, Chikusa-ku, Nagoya, Aichi 465-8651, Japan
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5
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Fettiplace MR, Weinberg G. Lipid emulsion for xenobiotic overdose: PRO. Br J Clin Pharmacol 2023; 89:1708-1718. [PMID: 36454165 PMCID: PMC10175108 DOI: 10.1111/bcp.15620] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/06/2022] [Revised: 09/16/2022] [Accepted: 09/22/2022] [Indexed: 12/03/2022] Open
Abstract
Infusion of lipid emulsion for drug overdose arose as a treatment for local anaesthetic systemic toxicity (LAST) initially based on laboratory results in animal models with the subsequent support of favourable case reports. Following successful translation to the clinic, practitioners also incorporated lipid emulsion as a treatment for non-local anaesthetic toxicities but without formal clinical trials. Recent clinical trials demonstrate a benefit of lipid emulsion in antipsychotic, pesticide, metoprolol and tramadol overdoses. Formal trials of lipid emulsion in LAST may never occur, but alternative analytic tools indicate strong support for its efficacy in this indication; for example, lipid emulsion has obviated the need for cardiopulmonary bypass in most cases of LAST. Herein, we describe the pre-clinical support for lipid emulsion, evaluate the most recent clinical studies of lipid emulsion for toxicity, identify a possible dose-based requirement for efficacy and discuss the limitations to uncontrolled studies in the field.
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Affiliation(s)
- Michael R. Fettiplace
- Department of Anesthesia, Critical Care and Pain Medicine, Massachusetts General Hospital, Boston, Massachusetts, 02114
| | - Guy Weinberg
- Department of Anesthesiology, University of Illinois College of Medicine, Chicago, IL 60622 USA
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6
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Jaffal K, Chevillard L, Mégarbane B. Lipid Emulsion to Treat Acute Poisonings: Mechanisms of Action, Indications, and Controversies. Pharmaceutics 2023; 15:pharmaceutics15051396. [PMID: 37242638 DOI: 10.3390/pharmaceutics15051396] [Citation(s) in RCA: 7] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/26/2023] [Revised: 04/24/2023] [Accepted: 04/26/2023] [Indexed: 05/28/2023] Open
Abstract
Biodetoxification using intravenous lipid emulsion (ILE) in acute poisoning is of growing interest. As well as for local anesthetics, ILE is currently used to reverse toxicity caused by a broad-spectrum of lipophilic drugs. Both pharmacokinetic and pharmacodynamic mechanisms have been postulated to explain its possible benefits, mainly combining a scavenging effect called "lipid sink" and cardiotonic activity. Additional mechanisms based on ILE-attributed vasoactive and cytoprotective properties are still under investigation. Here, we present a narrative review on lipid resuscitation, focusing on the recent literature with advances in understanding ILE-attributed mechanisms of action and evaluating the evidence supporting ILE administration that enabled the international recommendations. Many practical aspects are still controversial, including the optimal dose, the optimal administration timing, and the optimal duration of infusion for clinical efficacy, as well as the threshold dose for adverse effects. Present evidence supports the use of ILE as first-line therapy to reverse local anesthetic-related systemic toxicity and as adjunct therapy in lipophilic non-local anesthetic drug overdoses refractory to well-established antidotes and supportive care. However, the level of evidence is low to very low, as for most other commonly used antidotes. Our review presents the internationally accepted recommendations according to the clinical poisoning scenario and provides the precautions of use to optimize the expected efficacy of ILE and limit the inconveniences of its futile administration. Based on their absorptive properties, the next generation of scavenging agents is additionally presented. Although emerging research shows great potential, several challenges need to be overcome before parenteral detoxifying agents could be considered as an established treatment for severe poisonings.
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Affiliation(s)
- Karim Jaffal
- Department of Medical and Toxicological Critical Care, Federation of Toxicology, Lariboisière Hospital, 75010 Paris, France
- INSERM UMRS-1144, Paris-Cité University, 75006 Paris, France
| | - Lucie Chevillard
- Department of Medical and Toxicological Critical Care, Federation of Toxicology, Lariboisière Hospital, 75010 Paris, France
- INSERM UMRS-1144, Paris-Cité University, 75006 Paris, France
| | - Bruno Mégarbane
- Department of Medical and Toxicological Critical Care, Federation of Toxicology, Lariboisière Hospital, 75010 Paris, France
- INSERM UMRS-1144, Paris-Cité University, 75006 Paris, France
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7
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Stewart R, Newman V, Harvey M, Tang M, Wu Z, Cave G. Lipid emulsion mitigates intravenous amiodarone toxicity in a rat model. TOXICOLOGY COMMUNICATIONS 2022. [DOI: 10.1080/24734306.2022.2031565] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/19/2022] Open
Affiliation(s)
- Rachael Stewart
- Registrar, Intensive Care Unit, Canterbury District Health Board, Christchurch, New Zealand
| | - Verity Newman
- ACCS CT1 Anaesthetics, Royal Cornwall Hospital Trust, Cornwall, England
| | - Martyn Harvey
- Waikato DHB Emergency Department, Emergency Physician and Director of Research, Hamilton, New Zealand
| | - Mingtan Tang
- School of Pharmacy, University of Auckland, Auckland, New Zealand
| | - Zimei Wu
- School of Pharmacy, University of Auckland, Auckland, New Zealand
| | - Grant Cave
- Intensive Care Physician, Hawkes Bay District Health Board, Hastings, New Zealand
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8
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McDaniel M, Flores KB, Akpa BS. Predicting Inter-individual Variability During Lipid Resuscitation of Bupivacaine Cardiotoxicity in Rats: A Virtual Population Modeling Study. Drugs R D 2021; 21:305-320. [PMID: 34279844 PMCID: PMC8363697 DOI: 10.1007/s40268-021-00353-4] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 05/31/2021] [Indexed: 12/01/2022] Open
Abstract
Introduction Intravenous lipid emulsions (ILE) have been credited for successful resuscitation in drug intoxication cases where other cardiac life-support methods have failed. However, inter-individual variability can function as a confounder that challenges our ability to define the scope of efficacy for lipid interventions, particularly as relevant data are scarce. To address this challenge, we developed a quantitative systems pharmacology model to predict outcome variability and shed light on causal mechanisms in a virtual population of rats subjected to bupivacaine toxicity and ILE intervention. Materials and Methods We combined a physiologically based pharmacokinetic–pharmacodynamic model with data from a small study in Sprague-Dawley rats to characterize individual-specific cardiac responses to lipid infusion. We used the resulting individual parameter estimates to posit a population distribution of responses to lipid infusion. On that basis, we constructed a large virtual population of rats (N = 10,000) undergoing lipid therapy following bupivacaine cardiotoxicity. Results Using unsupervised clustering to assign resuscitation endpoints, our simulations predicted that treatment with a 30% lipid emulsion increases bupivacaine median lethal dose (LD50) by 46% when compared with a simulated control fluid. Prior experimental findings indicated an LD50 increase of 48%. Causal analysis of the population data suggested that muscle accumulation rather than liver accumulation of bupivacaine drives survival outcomes. Conclusion Our results represent a successful prediction of complex, dynamic physiological outcomes over a virtual population. Despite being informed by very limited data, our mechanistic model predicted a plausible range of treatment outcomes that accurately predicts changes in LD50 when extrapolated to putatively toxic doses of bupivacaine. Furthermore, causal analysis of the predicted survival outcomes indicated a critical synergy between scavenging and direct cardiotonic mechanisms of ILE action. Supplementary Information The online version contains supplementary material available at 10.1007/s40268-021-00353-4.
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Affiliation(s)
- Matthew McDaniel
- Department of Mathematics, North Carolina State University, Raleigh, NC, USA
| | - Kevin B Flores
- Department of Mathematics, North Carolina State University, Raleigh, NC, USA
| | - Belinda S Akpa
- Division of Biosciences, Oak Ridge National Laboratory, Oak Ridge, TN, USA. .,Department of Chemical and Biomolecular Engineering, University of Tennessee, Knoxville, TN, USA. .,Department of Molecular Biomedical Sciences, North Carolina State University, Raleigh, NC, USA.
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Pharmacokinetic Disposition of Amiodarone When Given with an Intralipid Rescue Strategy. Pharmaceutics 2021; 13:pharmaceutics13040539. [PMID: 33924314 PMCID: PMC8069539 DOI: 10.3390/pharmaceutics13040539] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/19/2021] [Revised: 04/06/2021] [Accepted: 04/08/2021] [Indexed: 11/20/2022] Open
Abstract
While the antiarrhythmic drug amiodarone is commonly used in clinical practice, it has a narrow therapeutic index that can lead to acute overdose. One proposed method to deal with this toxicity is lipid emulsion therapy, which may potentially quench the free amiodarone in blood and prevent its further distribution to target organs and tissues. In this study, we utilize an established swine model to examine the effects of Intralipid™ (IL) administration for acute amiodarone toxicity. A total of 14 pigs received an overdose of intravenous amiodarone. After twenty minutes, half of the pigs (n = 7) received IL while the control group (n = 7) received normal saline. Serum concentrations of amiodarone were then analyzed using a validated high-performance liquid chromatography (HPLC) method. Noncompartmental pharmacokinetic analyses were performed on the observed concentrations. There were no statistical differences in the area under the concentration time curve (6 h) or clearance, but there was a difference in the half-life between the two groups (3.12 vs. 0.85 h, p = 0.01). The administration of IL did not statistically change the overall exposure of amiodarone in the blood in the first 6 h; however, trends toward prolonged blood retention in the IL group were seen.
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Kopke MA, Yozova ID. Management of presumptive canine permethrin toxicosis using intravenous lipid emulsion as an adjunctive therapy. VETERINARY RECORD CASE REPORTS 2020. [DOI: 10.1136/vetreccr-2019-001041] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/04/2022]
Affiliation(s)
- Matthew A Kopke
- School of Veterinary ScienceMassey UniversityPalmerston NorthNew Zealand
| | - Ivayla D Yozova
- School of Veterinary ScienceMassey UniversityPalmerston NorthNew Zealand
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11
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Abstract
Although the mechanism of action is not well known, intravenous lipid emulsion (ILE) has been shown to be effective in the treatment of lipophilic drug intoxications. It is thought that, ILE probably separates the lipophilic drugs from target tissue by creating a lipid-rich compartment in the plasma. The second theory is that ILE provides energy to myocardium with high-dose free fatty acids activating the voltage-gated calcium channels in the myocytes. In this study, effects of ILE treatment on digoxin overdose were searched in an animal model in terms of cardiac side effects and survival. Forty Sprague-Dawley rats were divided into five groups. As the pre-treatment, the groups were administered saline, ILE, DigiFab and DigiFab and ILE. Following that, digoxin was infused to all groups until death except the control group. First arrhythmia and cardiac arrest observation times were recorded. According to the results, there was no statistically significant difference among the group in terms of first arrhythmia time and cardiac arrest times. However, when the saline group compared with ILE-treated group separately, significant difference was observed. DigiFab, ILE or ILE-DigiFab treatment make no significant difference in terms of the first arrhythmia and cardiac arrest duration in digoxin-intoxicated rats. However, it is not possible to say that at the given doses, ILE treatment might be successful at least as a known antidote. The fact that the statistical significance between the two groups is not observed in the subgroup analysis, the study should be repeated with larger groups.
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Abstract
The experimental use of lipid emulsion for local anesthetic toxicity was originally identified in 1998. It was then translated to clinical practice in 2006 and expanded to drugs other than local anesthetics in 2008. Our understanding of lipid resuscitation therapy has progressed considerably since the previous update from the American Society of Regional Anesthesia and Pain Medicine, and the scientific evidence has coalesced around specific discrete mechanisms. Intravenous lipid emulsion therapy provides a multimodal resuscitation benefit that includes both scavenging (eg, the lipid shuttle) and nonscavenging components. The intravascular lipid compartment scavenges drug from organs susceptible to toxicity and accelerates redistribution to organs where drug (eg, bupivacaine) is stored, detoxified, and later excreted. In addition, lipid exerts nonscavenging effects that include postconditioning (via activation of prosurvival kinases) along with cardiotonic and vasoconstrictive benefits. These effects protect tissue from ischemic damage and increase tissue perfusion during recovery from toxicity. Other mechanisms have diminished in favor based on lack of evidence; these include direct effects on channel currents (eg, calcium) and mass-effect overpowering a block in mitochondrial metabolism. In this narrative review, we discuss these proposed mechanisms and address questions left to answer in the field. Further work is needed, but the field has made considerable strides towards understanding the mechanisms.
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Lipid Emulsion Pretreatment Decreased the Maximum Total and Free Plasma Concentration of Levobupivacaine for Femoral and Sciatic Nerve Block in Below-Knee Fracture Surgery. Reg Anesth Pain Med 2018; 43:838-843. [DOI: 10.1097/aap.0000000000000834] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
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Park WK, Kim HS, Kim SH, Jung JR, Lynch C, Min NH. Intralipid Restoration of Myocardial Contractions Following Bupivacaine-Induced Asystole: Concentration- and Time-Dependence In Vitro. Anesth Analg 2017; 125:91-100. [PMID: 28537978 DOI: 10.1213/ane.0000000000002124] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
Abstract
BACKGROUND The concentration- and time-response relationships of lipid emulsion (LE; Intralipid) on the recovery of myocardial contractility following bupivacaine (BPV)-induced asystole are poorly defined. METHODS After achieving asystole by 500-μM BPV, varied concentrations of LE were applied to determine the recovery of stimulated contractile responses and contractions in the cardiac tissues of guinea pigs at a 1.2-Hz stimulation rate. These experiments were performed with LE in either a recirculating (2%-16%) or washout (nonrecirculating) condition (0.05%-12%) for 60 minutes. The effect of LE itself (0.05%-12%) was examined. Oxfenicine was used to evaluate the metabolic action of LE to reverse asystole. BPV concentrations in solution and myocardial tissues were measured. RESULTS In the recirculation condition, partial recovery of contractile forces was observed for 60 minutes at 4%, 8%, and 12% LE. A contracture followed after exposure to 16% LE in some asystolic muscles. In the washout experiments, following asystole, LE (0.05%-12%) had no effect on the recovery time of the first and regular contractile responses. LE (0.1%-8%) restored contractility to baseline levels after 45 minutes; partial recovery was shown with lower (0.05%) and higher (12%) concentrations. Oxfenicine did not alter the recovery of contractile forces. Contractile depression was observed with 12% LE alone. Concentration-related reduction of tissue BPV concentration by LE was observed in both circulating conditions. CONCLUSIONS LE induced time- and concentration-dependent recovery of stimulated myocardial contractions from BPV-induced asystole. The lipid uptake effect, along with other undefined mechanisms of LE, seems to contribute to the recovery of contractile function; however, the LE effect on myocardial metabolism is less likely involved at this concentration (500 μM) of BPV.
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Affiliation(s)
- Wyun Kon Park
- From the *Department of Anesthesiology and Pain Medicine, and Anesthesia and Pain Research Institute, Yonsei University College of Medicine, Seoul, Korea; †Department of Food Science and Technology, Jungwon University, Chungbuk Province, Korea; and ‡Department of Anesthesiology, University of Virginia Health System, Charlottesville, Virginia
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16
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A cohort study of unstable overdose patients treated with intravenous lipid emulsion therapy. CAN J EMERG MED 2016; 19:256-264. [DOI: 10.1017/cem.2016.396] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
Abstract
AbstractObjectivesIntravenous lipid emulsion (ILE) has been used increasingly over the last decade for a range of drug overdoses. Although the use of ILE in local anesthetic toxicity (LAST) is well established, the hemodynamic effectiveness of ILE in non-LAST poisonings is still unclear. Thus, the primary objective of this study was to examine a cohort of poisoned patients in whom ILE was administered.MethodsConsecutive patients were identified by calls to a regional poison center from May 1, 2012 to May 30, 2014. Patients were enrolled if they ingested a drug, developed hemodynamic instability, failed conventional treatment, and received ILE therapy. Data were collected by medical record review. The primary outcome was the change in mean arterial pressure (MAP) in the first hour after ILE administration. Secondary outcomes included survival, length of stay, and the effect of drug class on patient outcome.ResultsThirty-six patients were enrolled. Agents ingested included calcium channel blockers and beta blockers (10/36, 27.8%), tricyclic antidepressants (5/36, 13.9%), bupropion (3/36, 8.3%), and antiepileptic agents (1/36, 2.8%). Seventeen patients (47.2%) ingested multiple agents. Twenty-five patients survived (69.0%). Overall, MAP increased by 13.79 mm Hg (95% CI 1.43–26.15); this did not meet oura prioridefinition of clinical significance.ConclusionsOur study did not find a clinically important improvement in MAP after ILE administration. Until future research is done to more definitively study its efficacy, ILE should remain a potential treatment option for hemodynamically unstable overdose patients only after conventional therapy has failed.
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Heinonen JA, Schramko AA, Skrifvars MB, Litonius E, Backman JT, Mervaala E, Rosenberg PH. The effects of intravenous lipid emulsion on hemodynamic recovery and myocardial cell mitochondrial function after bupivacaine toxicity in anesthetized pigs. Hum Exp Toxicol 2016; 36:365-375. [DOI: 10.1177/0960327116650010] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
Abstract
Local anesthetic toxicity is thought to be mediated partly by inhibition of cardiac mitochondrial function. Intravenous (i.v.) lipid emulsion may overcome this energy depletion, but doses larger than currently recommended may be needed for rescue effect. In this randomized study with anesthetized pigs, we compared the effect of a large dose, 4 mL/kg, of i.v. 20% Intralipid® ( n = 7) with Ringer’s acetate ( n = 6) on cardiovascular recovery after a cardiotoxic dose of bupivacaine. We also examined mitochondrial respiratory function in myocardial cell homogenates analyzed promptly after needle biopsies from the animals. Bupivacaine plasma concentrations were quantified from plasma samples. Arterial blood pressure recovered faster and systemic vascular resistance rose more rapidly after Intralipid than Ringer’s acetate administration ( p < 0.0001), but Intralipid did not increase cardiac index or left ventricular ejection fraction. The lipid-based mitochondrial respiration was stimulated by approximately 30% after Intralipid ( p < 0.05) but unaffected by Ringer’s acetate. The mean (standard deviation) area under the concentration–time curve (AUC) of total bupivacaine was greater after Intralipid (105.2 (13.6) mg·min/L) than after Ringer’s acetate (88.1 (7.1) mg·min/L) ( p = 0.019). After Intralipid, the AUC of the lipid-un-entrapped bupivacaine portion (97.0 (14.5) mg·min/L) was 8% lower than that of total bupivacaine ( p < 0.0001). To conclude, 4 mL/kg of Intralipid expedited cardiovascular recovery from bupivacaine cardiotoxicity mainly by increasing systemic vascular resistance. The increased myocardial mitochondrial respiration and bupivacaine entrapment after Intralipid did not improve cardiac function.
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Affiliation(s)
- JA Heinonen
- Department of Anesthesiology and Intensive Care Medicine, University of Helsinki and Helsinki University Hospital, Helsinki, Finland
| | - AA Schramko
- Department of Anesthesiology and Intensive Care Medicine, University of Helsinki and Helsinki University Hospital, Helsinki, Finland
| | - MB Skrifvars
- Department of Anesthesiology and Intensive Care Medicine, University of Helsinki and Helsinki University Hospital, Helsinki, Finland
| | - E Litonius
- Department of Anesthesia and Perioperative Care, University of California, San Francisco, CA, USA
| | - JT Backman
- Department of Clinical Pharmacology, University of Helsinki and Helsinki University Hospital, Helsinki, Finland
| | - E Mervaala
- Department of Pharmacology, University of Helsinki, Helsinki, Finland
| | - PH Rosenberg
- Department of Anesthesiology and Intensive Care Medicine, University of Helsinki and Helsinki University Hospital, Helsinki, Finland
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Höjer J, Jacobsen D, Neuvonen PJ, Rosenberg PH. Lipid Rescue - Efficacy and Safety Still Unproven. Basic Clin Pharmacol Toxicol 2016; 119:345-8. [DOI: 10.1111/bcpt.12607] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/19/2016] [Accepted: 04/08/2016] [Indexed: 12/12/2022]
Affiliation(s)
- Jonas Höjer
- Swedish Poisons Information Center; Karolinska Institute; Stockholm Sweden
| | - Dag Jacobsen
- Department of Acute Medicine; Oslo University Hospital; Oslo Norway
| | - Pertti J. Neuvonen
- Department of Clinical Pharmacology; Helsinki University Hospital and University of Helsinki; Helsinki Finland
| | - Per H. Rosenberg
- Department of Anaesthesiology and Intensive Care Medicine; Helsinki University Hospital and University of Helsinki; Helsinki Finland
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Affiliation(s)
- Michael R Fettiplace
- Department of Anesthesiology, University of Illinois Hospital and Health Sciences System, Chicago, IL; Research and Development Service, Jesse Brown Veterans Affairs Medical Center, Chicago, IL
| | - Guy Weinberg
- Department of Anesthesiology, University of Illinois Hospital and Health Sciences System, Chicago, IL; Research and Development Service, Jesse Brown Veterans Affairs Medical Center, Chicago, IL
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Eisenkraft A, Falk A. The possible role of intravenous lipid emulsion in the treatment of chemical warfare agent poisoning. Toxicol Rep 2016; 3:202-210. [PMID: 28959540 PMCID: PMC5615427 DOI: 10.1016/j.toxrep.2015.12.007] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/08/2015] [Revised: 11/29/2015] [Accepted: 12/24/2015] [Indexed: 12/19/2022] Open
Abstract
Organophosphates (OPs) are cholinesterase inhibitors that lead to a characteristic toxidrome of hypersecretion, miosis, dyspnea, respiratory insufficiency, convulsions and, without proper and early antidotal treatment, death. Most of these compounds are highly lipophilic. Sulfur mustard is a toxic lipophilic alkylating agent, exerting its damage through alkylation of cellular macromolecules (e.g., DNA, proteins) and intense activation of pro-inflammatory pathways. Currently approved antidotes against OPs include the peripheral anticholinergic drug atropine and an oxime that reactivates the inhibited cholinesterase. Benzodiazepines are used to stop organophosphate-induced seizures. Despite these approved drugs, efforts have been made to introduce other medical countermeasures in order to attenuate both the short-term and long-term clinical effects following exposure. Currently, there is no antidote against sulfur mustard poisoning. Intravenous lipid emulsions are used as a source of calories in parenteral nutrition. In recent years, efficacy of lipid emulsions has been shown in the treatment of poisoning by fat-soluble compounds in animal models as well as clinically in humans. In this review we discuss the usefulness of intravenous lipid emulsions as an adjunct to the in-hospital treatment of chemical warfare agent poisoning.
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Affiliation(s)
- Arik Eisenkraft
- NBC Protection Division, IMOD, Israel.,Israel Defense Forces Medical Corps, Israel.,The Institute for Research in Military Medicine, The Faculty of Medicine, The Hebrew University, Jerusalem, Israel
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Buys M, Scheepers PA, Levin AI. Lipid emulsion therapy: non-nutritive uses of lipid emulsions in anaesthesia and intensive care. SOUTHERN AFRICAN JOURNAL OF ANAESTHESIA AND ANALGESIA 2015. [DOI: 10.1080/22201181.2015.1095470] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
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Doshi D, Jayawardana R. Amiodarone-Induced Life-Threatening Refractory Hypotension. AMERICAN JOURNAL OF CASE REPORTS 2015; 16:617-20. [PMID: 26366832 PMCID: PMC4574515 DOI: 10.12659/ajcr.893920] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Abstract
BACKGROUND Amiodarone is frequently used in emergency departments for treatment of arrhythmias. Incidence of several amiodarone-related adverse events is unknown. The literature is sparse for potentially life-threatening adverse effects of amiodarone. CASE REPORT We present a case of a male patient who presented with chest discomfort and rapid atrial fibrillation. He was known to have paroxysmal atrial fibrillation, which did not respond to initial beta-blocker treatment. The second-line drug amiodarone was given to the patient for rate control. He developed severe hypotension related to amiodarone and required inotropic support along with rapid-sequence intubation. CONCLUSIONS Intravenous amiodarone can cause severe and refractory hypotension.
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Affiliation(s)
- Deepak Doshi
- Director of Medical Service, Roma Hospital, Roma, QLD, Australia
| | - Ravi Jayawardana
- Department of Emergency, Campbelltown Hospital, Campbelltown, NSW, Australia
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Abstract
Use of intravenous fat emulsion (IFE) for the treatment of poisoned patients in extremis is increasing. Little literature exists describing failures and complications of IFE. We describe two cardiac arrests temporally associated with IFE. A 50-year-old woman presented after ingesting 80 total tablets of metoprolol 25 mg and bupropion 150 mg. Bradycardia and hypotension were refractory to calcium salts, catecholamines, and high dose insulin (HDI). With a pulse of 40/min and mean arterial pressure (MAP) of 30 mmHg, 100 mL of 20 % IFE was given; within 30 s, brady-asystolic arrest occurred. Pulses returned after 3 min of CPR. The patient died on hospital day 4 of multisystem organ failure (MSOF). A 53-year-old man presented after ingesting of 3,600 mg of diltiazem and 1,200 mg of propranolol. Bradycardia and hypotension were refractory to calcium salts, catecholamines, HDI, bicarbonate, and atropine. With a pulse of 30/min and a MAP of 40 mmHg, 150 mL of 20 % IFE was given; within 1 min, a brady-asystolic arrest occurred. Pulses returned after 6 min of CPR. The patient died on hospital day 7 of MSOF. Reported cases of IFE failures or potential complications are sparse. This report adds only case experience, not clarity. We report two cardiac arrests that were temporally associated with IFE.
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Peacock RE, Hosgood G, Swindells KL, Smart L. A randomized, controlled clinical trial of intravenous lipid emulsion as an adjunctive treatment for permethrin toxicosis in cats. J Vet Emerg Crit Care (San Antonio) 2015; 25:597-605. [PMID: 26088727 DOI: 10.1111/vec.12322] [Citation(s) in RCA: 21] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/04/2013] [Accepted: 03/22/2015] [Indexed: 11/30/2022]
Abstract
OBJECTIVE To assess for any clinical benefit of intravenous lipid emulsion (ILE) for permethrin toxicosis in cats by comparing the progression of clinical signs of cats before and after treatment with ILE to cats treated with a saline control. To accomplish this objective, a clinical staging system for cats with permethrin toxicosis was developed and validated. DESIGN Prospective, multicenter, randomized, controlled clinical trial. SETTING University veterinary teaching hospital and 12 private veterinary emergency hospitals. ANIMALS Thirty-four client-owned cats with permethrin toxicosis. INTERVENTIONS A clinical staging system was designed based on abnormalities found on physical examination of cats with permethrin toxicosis. The clinical staging system had 6 stages, ranging from Stage A for cats with no abnormalities to Stage F for cats with grand mal seizures. The system was validated for intraviewer and interviewer variability. Cats in the clinical trial were randomized to receive 15 mL/kg of either intravenous 0.9% saline (control) or 20% ILE over 60 minutes. For each cat, a clinical stage was recorded at set time points before and after the randomized treatment was administered. The distribution of clinical stage stratified over time was compared across treatment groups. MEASUREMENTS AND MAIN RESULTS The clinical staging system showed excellent repeatability (P = 1.0) and reliability (P = 1.0). In the clinical trial, there was a significant difference in the distribution of clinical stages over time (P < 0.001) and from presentation stage to Stage B (P = 0.006), with ILE-treated cats (n = 20) having lower clinical stages earlier than control cats (n = 14). There was no significant difference in signalment, body weight, or supportive treatment between the groups. CONCLUSIONS The clinical staging system was repeatable and reliable. Clinical stages of permethrin toxicosis in ILE-treated cats improved earlier compared to control cats, suggesting ILE may be a useful adjunctive therapy in the treatment of permethrin toxicosis in cats.
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Affiliation(s)
- Rachel E Peacock
- School of Veterinary and Life Sciences, Murdoch University, 90 South Street, Murdoch, 6150, Western Australia
| | - Giselle Hosgood
- School of Veterinary and Life Sciences, Murdoch University, 90 South Street, Murdoch, 6150, Western Australia
| | - Katrin L Swindells
- School of Veterinary and Life Sciences, Murdoch University, 90 South Street, Murdoch, 6150, Western Australia
| | - Lisa Smart
- School of Veterinary and Life Sciences, Murdoch University, 90 South Street, Murdoch, 6150, Western Australia
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Szebeni J. Complement activation-related pseudoallergy: A stress reaction in blood triggered by nanomedicines and biologicals. Mol Immunol 2014; 61:163-73. [DOI: 10.1016/j.molimm.2014.06.038] [Citation(s) in RCA: 222] [Impact Index Per Article: 20.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/02/2014] [Revised: 06/27/2014] [Accepted: 06/28/2014] [Indexed: 11/28/2022]
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Cave G, Harvey MG. Should we consider the infusion of lipid emulsion in the resuscitation of poisoned patients? CRITICAL CARE : THE OFFICIAL JOURNAL OF THE CRITICAL CARE FORUM 2014; 18:457. [PMID: 25673255 PMCID: PMC4331416 DOI: 10.1186/s13054-014-0457-5] [Citation(s) in RCA: 25] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Subscribe] [Scholar Register] [Indexed: 02/03/2023]
Abstract
The use of intravenous lipid emulsions (ILEs) as antidote in local anaesthetic systemic toxicity has gained widespread support following convincing data from animal models, and successful case reports in humans. Proposed beneficial mechanisms of action for ILEs include intravascular sequestration of intoxicant and subsequent enhanced redistribution to biologically inert tissues, augmentation of fatty acid utilisation for ATP synthesis in the context of metabolic poisoning, and direct cardiotonic and ion channel effects. The evidence base for use of ILEs in acute drug intoxication is evolving. The present evidence supports use of ILEs only in local anaesthetic systemic toxicity and in lipophilic cardiotoxin intoxication when there is an immediate threat to life, and other therapies have proven ineffective.
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Carreiro S, Blum J, Hack JB. Pretreatment With Intravenous Lipid Emulsion Reduces Mortality From Cocaine Toxicity in a Rat Model. Ann Emerg Med 2014; 64:32-7. [DOI: 10.1016/j.annemergmed.2013.11.017] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/01/2013] [Revised: 11/11/2013] [Accepted: 11/22/2013] [Indexed: 10/25/2022]
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Carreiro S, Blum J, Jay G, Hack JB. Intravenous lipid emulsion alters the hemodynamic response to epinephrine in a rat model. J Med Toxicol 2014; 9:220-5. [PMID: 23412937 DOI: 10.1007/s13181-013-0291-1] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/05/2023] Open
Abstract
Intravenous lipid emulsion (ILE) is an adjunctive antidote used in selected critically ill poisoned patients. These patients may also require administration of advanced cardiac life support (ACLS) drugs. Limited data is available to describe interactions of ILE with standard ACLS drugs, specifically epinephrine. Twenty rats with intra-arterial and intravenous access were sedated with isoflurane and split into ILE or normal saline (NS) pretreatment groups. All received epinephrine 15 μm/kg intravenously (IV). Continuous mean arterial pressure (MAP) and heart rate (HR) were monitored until both indices returned to baseline. Standardized t tests were used to compare peak MAP, time to peak MAP, maximum change in HR, time to maximum change in HR, and time to return to baseline MAP/HR. There was a significant difference (p = 0.023) in time to peak MAP in the ILE group (54 s, 95 % CI 44-64) versus the NS group (40 s, 95 % CI 32-48) and a significant difference (p = 0.004) in time to return to baseline MAP in ILE group (171 s, 95 % CI 148-194) versus NS group (130 s, 95 % CI 113-147). There were no significant differences in the peak change in MAP, peak change in HR, time to minimum HR, or time to return to baseline HR between groups. ILE-pretreated rats had a significant difference in MAP response to epinephrine; ILE delayed the peak effect and prolonged the duration of effect of epinephrine on MAP, but did not alter the peak increase in MAP or the HR response.
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Affiliation(s)
- Stephanie Carreiro
- Department of Emergency Medicine, The Alpert Medical School, Brown University, Providence, RI, USA,
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Harvey M, Cave G. Lipid rescue: does the sink hold water? And other controversies. Br J Anaesth 2014; 112:622-5. [DOI: 10.1093/bja/aeu010] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022] Open
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30
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Fettiplace MR, Akpa BS, Ripper R, Zider B, Lang J, Rubinstein I, Weinberg G. Resuscitation with lipid emulsion: dose-dependent recovery from cardiac pharmacotoxicity requires a cardiotonic effect. Anesthesiology 2014; 120:915-25. [PMID: 24496123 PMCID: PMC4077021 DOI: 10.1097/aln.0000000000000142] [Citation(s) in RCA: 44] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022]
Abstract
BACKGROUND Recent publications have questioned the validity of the "lipid sink" theory of lipid resuscitation while others have identified sink-independent effects and posed alternative mechanisms such as hemodilution. To address these issues, the authors tested the dose-dependent response to intravenous lipid emulsion during reversal of bupivacaine-induced cardiovascular toxicity in vivo. Subsequently, the authors modeled the relative contribution of volume resuscitation, drug sequestration, inotropy and combined drug sequestration, and inotropy to this response with the use of an in silico model. METHODS Rats were surgically prepared to monitor cardiovascular metrics and deliver drugs. After catheterization and instrumentation, animals received a nonlethal dose of bupivacaine to produce transient cardiovascular toxicity, then were randomized to receive one of the four treatments: 30% intravenous lipid emulsion, 20% intravenous lipid emulsion, intravenous saline, or no treatment (n = 7 per condition; 28 total animals). Recovery responses were compared with the predictions of a pharmacokinetic-pharmacodynamic model parameterized using previously published laboratory data. RESULTS Rats treated with lipid emulsions recovered faster than did rats treated with saline or no treatment. Intravenous lipid emulsion of 30% elicited the fastest hemodynamic recovery followed in order by 20% intravenous lipid emulsion, saline, and no treatment. An increase in arterial blood pressure underlay the recovery in both lipid emulsion-treated groups. Heart rates remained depressed in all four groups throughout the observation period. Model predictions mirrored the experimental recovery, and the model that combined volume, sequestration, and inotropy predicted in vivo results most accurately. CONCLUSION Intravenous lipid emulsion accelerates cardiovascular recovery from bupivacaine toxicity in a dose-dependent manner, which is driven by a cardiotonic response that complements the previously reported sequestration effect.
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Affiliation(s)
- Michael R Fettiplace
- From the Department of Anesthesiology, University of Illinois College of Medicine, Chicago, Illinois (M.R.F., R.R., and G.W.); Research and Development Service, Jesse Brown Veterans Affairs Medical Center, Chicago, Illinois (M.R.F., R.R., I.R., and G.W.); University of Illinois College of Medicine, Chicago, Illinois (M.R.F. and B.Z.); Department of Chemical Engineering, University of Illinois at Chicago, Chicago, Illinois (B.S.A.); University of Illinois College of Medicine, Peoria, Illinois (J.L.); and Section of Pulmonary, Critical Care, Sleep, and Allergy Medicine, Department of Medicine, University of Illinois College of Medicine, Chicago, Illinois (I.R.)
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Harvey M, Cave G, Ong B. Intravenous lipid emulsion-augmented plasma exchange in a rabbit model of clomipramine toxicity; survival, but no sink. Clin Toxicol (Phila) 2014; 52:13-9. [DOI: 10.3109/15563650.2013.866242] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022]
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Blum J, Carreiro S, Hack JB. Intravenous lipid emulsion does not reverse dabigatran-induced anticoagulation in a rat model. Acad Emerg Med 2013; 20:1022-5. [PMID: 24127705 DOI: 10.1111/acem.12225] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/11/2013] [Revised: 03/30/2013] [Accepted: 05/14/2013] [Indexed: 11/28/2022]
Abstract
OBJECTIVES The anticoagulant dabigatran has no reversal agent and may cause life-threatening bleeding in patients with trauma or closed-space hemorrhage. Intravenous lipid emulsion (ILE) is thought to create a lipid compartment in serum that sequesters lipophilic drugs. Dabigatran is lipophilic, and its anticoagulant effects are concentration dependent. The study objective was to determine if ILE therapy reverses dabigatran's anticoagulant effects. METHODS Twenty rats were selected at random, 10 in the ILE group and 10 in a normal saline (NS) control group. Animals had a baseline tail bleeding time (T0), followed by oral dabigatran administration (15 mg/kg). At 45 minutes (T45), a second tail bleed time measurement was performed, followed by a 7-minute infusion of 15 mL/kg ILE or NS. A final 60-minute (T60) bleed time measurement was obtained. An ILE-only group of five animals had bleeding times assessed prior to (T0) and 15 minutes after (T15) ILE therapy. A mixed-effect repeated-measures analysis of variance modeling the effect of time, group, and the interaction of group and time on bleed times was conducted. RESULTS There was a significant within-subject change in bleeding time across the assessment points (F(2,36) = 33; p < 0.001), but there were no effect of group (F(1,18) = 1.42, p = 0.25) or an interaction between group and assessment point on mean bleeding time (F(2,36) = 0.59, p = 56). Between T0 and T45, average bleeding times increased from 109.5 seconds (95% confidence interval [CI] = 94 to 125 seconds) to 231.8 seconds (95% CI = 193 to 271 seconds; p < 0.0001) for both the ILE group and the NS control group. Between T45 and T60, bleeding times in the ILE group decreased by 31.5 seconds (95% CI = -77 to 14 seconds) and by 6 seconds (95% CI = -67 to 55 seconds) in the NS group (p = 0.46). In the five ILE-only animals, the average bleeding time at T0 was 114 seconds (95% CI = 62 to 166 seconds), which increased significantly at T15 to 237 seconds (95% CI = 161 to 313 seconds; p = 0.02). CONCLUSIONS The anticoagulant effects of dabigatran are not reversed with ILE therapy. Although ILE itself significantly prolonged bleeding times, when administered to dabigatran-anticoagulated rats, bleeding times did not change significantly. There may be a complex interaction of ILE with dabigatran that this study was not able to elucidate.
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Affiliation(s)
- Jared Blum
- Department of Emergency Medicine; The Warren Alpert Medical School; Brown University; Providence RI
| | - Stephanie Carreiro
- Department of Emergency Medicine; The Warren Alpert Medical School; Brown University; Providence RI
| | - Jason B. Hack
- Department of Emergency Medicine; The Warren Alpert Medical School; Brown University; Providence RI
- Division of Medical Toxicology; The Warren Alpert Medical School; Brown University; Providence RI
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Oda Y. Lipid resuscitation: development in basic research and application to clinical practice. J Anesth 2013; 27:811-4. [PMID: 23942649 DOI: 10.1007/s00540-013-1691-8] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/30/2013] [Accepted: 07/23/2013] [Indexed: 11/25/2022]
Affiliation(s)
- Yutaka Oda
- Department of Anesthesiology, Osaka City General Hospital and Children's Hospital 2-2-43, Miyakojima-hondori, Miyakojima-ku, Osaka, 534-0021, Japan,
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Lipid emulsion infusion: resuscitation for local anesthetic and other drug overdose. Anesthesiology 2013; 117:180-7. [PMID: 22627464 DOI: 10.1097/aln.0b013e31825ad8de] [Citation(s) in RCA: 158] [Impact Index Per Article: 13.2] [Reference Citation Analysis] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
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35
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Heinonen JA, Litonius E, Backman JT, Neuvonen PJ, Rosenberg PH. Intravenous Lipid Emulsion Entraps Amitriptyline into Plasma and Can Lower its Brain Concentration - An Experimental Intoxication Study in Pigs. Basic Clin Pharmacol Toxicol 2013; 113:193-200. [DOI: 10.1111/bcpt.12082] [Citation(s) in RCA: 36] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/22/2013] [Accepted: 04/18/2013] [Indexed: 11/30/2022]
Affiliation(s)
- Juho A. Heinonen
- Department of Anaesthesiology and Intensive Care Medicine; University of Helsinki; Helsinki; Finland
| | - Erik Litonius
- Department of Anaesthesiology and Intensive Care Medicine; Helsinki University Central Hospital and University of Helsinki; Helsinki; Finland
| | - Janne T. Backman
- Department of Clinical Pharmacology; University of Helsinki and HUSLAB; Helsinki University Central Hospital; Helsinki; Finland
| | - Pertti J. Neuvonen
- Department of Clinical Pharmacology; University of Helsinki and HUSLAB; Helsinki University Central Hospital; Helsinki; Finland
| | - Per H. Rosenberg
- Department of Anaesthesiology and Intensive Care Medicine; University of Helsinki; Helsinki; Finland
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Lokajová J, Holopainen JM, Wiedmer SK. Comparison of lipid sinks in sequestering common intoxicating drugs. J Sep Sci 2013; 35:3106-12. [PMID: 23175140 DOI: 10.1002/jssc.201101038] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/29/2011] [Revised: 01/04/2012] [Accepted: 01/13/2012] [Indexed: 11/10/2022]
Abstract
Intravenous lipid emulsion is a recommended treatment for local anesthetic intoxication. The lipid sink theory hypothesizes that the mechanism behind the lipid treatment is the entrapment of toxic drugs in plasma, preventing them from reaching target receptors. Lipid sink treatment has also been used as a last refuge treatment for severe tricyclic antidepressant intoxication with seemingly beneficial results. We selected three drugs, i.e. amiodarone, ketamine, and amitriptyline, that can cause severe intoxication and compared their interactions with two commercial fat emulsions (Intralipid® and ClinOleic®) and one synthetic liposome (80:20 mol% phosphatidylcholine/phosphatidylglycerol) dispersion. The interaction studies were carried out by capillary electrokinetic chromatography and the retention factors and distributions constants of the drugs were calculated. The results demonstrate that there is stronger interaction between the drugs and the synthetic liposome dispersion than with the commercial emulsions.
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Affiliation(s)
- Jana Lokajová
- Laboratory of Analytical Chemistry, Department of Chemistry, University of Helsinki, Helsinki, Finland
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Nogué S, Cino J, Corominas N, Soy D. Intoxicación por flecainida. Med Clin (Barc) 2013; 140:46. [DOI: 10.1016/j.medcli.2012.05.038] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/28/2012] [Accepted: 05/31/2012] [Indexed: 10/27/2022]
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Kaplan A, Whelan M. The Use of IV Lipid Emulsion for Lipophilic Drug Toxicities. J Am Anim Hosp Assoc 2012; 48:221-7. [DOI: 10.5326/jaaha-ms-5761] [Citation(s) in RCA: 32] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Abstract
IV lipid emulsion (ILE) therapy is emerging as a potential antidote for lipophilic drug toxicities in both human and veterinary medicine. ILE has already gained acceptance in human medicine as a treatment of local anesthetic systemic toxicity, but its mechanism of action, safety margins, and standardized dosing information remains undetermined at this time. Experimental and anecdotal use of ILE in the human and veterinary literature, theorized mechanisms of action, current dosing recommendations, potential adverse effects, and indications for use in human and veterinary emergency medicine are reviewed herein.
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Affiliation(s)
- Amy Kaplan
- Angell Animal Medical Center-Boston, Boston, MA
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Litonius ES, Niiya T, Neuvonen PJ, Rosenberg PH. Intravenous Lipid Emulsion Only Minimally Influences Bupivacaine and Mepivacaine Distribution in Plasma and Does Not Enhance Recovery from Intoxication in Pigs. Anesth Analg 2012; 114:901-6. [DOI: 10.1213/ane.0b013e3182367a37] [Citation(s) in RCA: 24] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
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Forster V, Luciani P, Leroux JC. Treatment of calcium channel blocker-induced cardiovascular toxicity with drug scavenging liposomes. Biomaterials 2012; 33:3578-85. [PMID: 22330848 DOI: 10.1016/j.biomaterials.2012.01.042] [Citation(s) in RCA: 23] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/30/2011] [Accepted: 01/22/2012] [Indexed: 12/20/2022]
Abstract
Calcium channel blocker (CCB) overdose is potentially lethal. Verapamil and diltiazem are particularly prone to acute toxicity due to their dual effect on cardiac and vascular tissues. Unfortunately, conventional decontamination measures are ineffective in accelerating blood clearance and, to date, few efforts have been made to develop antidotes. To address the issue, injectable long-circulating liposomes bearing a transmembrane pH-gradient are proposed as efficient detoxifying agents of CCB poisoning. By scavenging the drug in situ, these circulating nanocarriers can restrict its distribution in tissues and hinder its pharmacological effect. In vitro, we showed that liposomes stability in serum and their ability to sequester CCBs could be finely-tuned by modulating their internal pH, surface charge, and lipid bilayer structure. Subsequently, we verified their efficacy in reversing the cardiovascular effects of verapamil in rats implanted with telemetric pressure/biopotential transmitters. In animals orally intoxicated to verapamil, an intravenous injection of the liposomal antidote rapidly attenuated the reduction in blood pressure. Areas under diastolic, systolic, and mean pressures curves were significantly reduced by up to 60% and the time to hemodynamic recovery was shortened from 19 to only 11 h. These findings confirm the protective effect of pH-gradient liposomes against cardiovascular failure after CBB intoxication, and endorse their potential as efficient, versatile antidotes.
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Affiliation(s)
- Vincent Forster
- Department of Chemistry and Applied Biosciences, Institute of Pharmaceutical Sciences, ETH Zurich, Wolfgang-Pauli-Strasse 10, 8093 Zurich, Switzerland
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Gwaltney-Brant S, Meadows I. Use of intravenous lipid emulsions for treating certain poisoning cases in small animals. Vet Clin North Am Small Anim Pract 2012; 42:251-62, vi. [PMID: 22381177 DOI: 10.1016/j.cvsm.2011.12.001] [Citation(s) in RCA: 36] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
Intravenous lipid emulsion (ILE) infusions have become an emerging treatment modality in managing intoxications of veterinary patients. The advantages of ILE include an apparent wide margin of safety, relatively low cost, long shelf-life, and ease of administration. Based on limited case and anecdotal reports, ILEs have shown promise in the management of toxicoses from a variety of lipophilic agents, including drugs and pesticides. More studies are needed to determine optimum dosing regimens and identify potential adverse effects from the antidotal use of ILE in veterinary medicine.
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Litonius E, Niiya T, Neuvonen PJ, Rosenberg PH. No Antidotal Effect of Intravenous Lipid Emulsion in Experimental Amitriptyline Intoxication Despite Significant Entrapment of Amitriptyline. Basic Clin Pharmacol Toxicol 2011; 110:378-83. [DOI: 10.1111/j.1742-7843.2011.00826.x] [Citation(s) in RCA: 26] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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Boulin M, Ciboulet A, Guiu B, Maillard E, Bonnetain F, Minello A, Gagnaire A, Lepage C, Krause D, Hillon P, Bedenne L, Cercueil JP, Chauffert B, Jouve JL. Randomised controlled trial of lipiodol transarterial chemoembolisation with or without amiodarone for unresectable hepatocellular carcinoma. Dig Liver Dis 2011; 43:905-11. [PMID: 21802381 DOI: 10.1016/j.dld.2011.06.016] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/15/2011] [Revised: 05/31/2011] [Accepted: 06/21/2011] [Indexed: 12/11/2022]
Abstract
BACKGROUND There is no consensus about the most effective method for transarterial chemoembolisation of hepatocellular carcinoma. AIM The aim of this phase II trial was to compare the efficacy and toxicity of lipiodol transarterial chemoembolisation with amiodarone in association with pirarubicin or doxorubicin versus lipiodol transarterial chemoembolisation with anthracycline alone in a control group. METHODS Patients with unresectable hepatocellular carcinoma and Child-Pugh A/B7 were considered eligible for the trial. transarterial chemoembolisation was repeated every 6 weeks for a maximum of 4 sessions. RESULTS Thirteen patients were randomised in the amiodarone group, and 14 were randomised in the control group. The two groups were comparable with respect to their baseline characteristics. The objective response rate according to the EASL criteria was 62% (95% CI 35-88) in the amiodarone group and 50% (95% CI 24-76) in the control group. At 1 and 2 years, survival rates were 77% (95% CI 44-92) and 52% (95% CI 22-75) in the amiodarone group, and 57% (95% CI 28-78) and 40% (95% CI 15-65) in the control group, respectively. There was no difference between the two groups in terms of toxicity. CONCLUSIONS The results of this study suggest that lipiodol transarterial chemoembolisation with anthracycline and amiodarone was safe but did not increase survival compared with lipiodol transarterial chemoembolisation with anthracycline alone in patients with hepatocellular carcinoma.
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Affiliation(s)
- Mathieu Boulin
- Department of Pharmacy, CHU (University Hospital), Dijon, France.
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Samuels TL, Willers JW, Uncles DR, Monteiro R, Halloran C, Dai H. In vitro suppression of drug-induced methaemoglobin formation by Intralipid(®) in whole human blood: observations relevant to the 'lipid sink theory'. Anaesthesia 2011; 67:23-32. [PMID: 21999405 DOI: 10.1111/j.1365-2044.2011.06914.x] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
To provide further evidence for the lipid sink theory, we have developed an in vitro model to assess the effect of Intralipid® 20% on methaemoglobin formation by drugs of varying lipid solubility. Progressively increasing Intralipid concentrations from 4 to 24 mg.ml⁻¹ suppressed methaemoglobin formation by the lipid soluble drug glyceryl trinitrate in a dose-dependent manner (p < 0.001). Both dose and timing of administration of Intralipid to blood previously incubated with glyceryl trinitrate for 10 and 40 min resulted in significant suppression of methaemoglobin formation (p < 0.0001 and p < 0.05, respectively). Mathematical modelling demonstrated that the entire process of methaemoglobin formation by glyceryl trinitrate was slowed down in the presence of Intralipid. Intralipid did not significantly suppress methaemoglobin formation induced by 2-amino-5-hydroxytoluene (partially lipid soluble) or sodium nitrite (lipid insoluble; both p > 0.5). This work may assist determination of the suitability of drugs taken in overdose for which Intralipid might be deployed.
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Affiliation(s)
- T L Samuels
- Department of Anaesthesia, Worthing Hospital, Worthing, UK.
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