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Rietjens SJ, van Riemsdijk TE, Sikma MA, de Lange DW. High-dose insulin should NOT be used without vasopressors in calcium channel blocker toxicity. Br J Clin Pharmacol 2023; 89:1275-1278. [PMID: 36604782 DOI: 10.1111/bcp.15642] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/20/2022] [Accepted: 12/05/2022] [Indexed: 01/07/2023] Open
Affiliation(s)
- Saskia J Rietjens
- Dutch Poisons Information Center, University Medical Center Utrecht, Utrecht University, Utrecht, Netherlands
| | - Tessa E van Riemsdijk
- Dutch Poisons Information Center, University Medical Center Utrecht, Utrecht University, Utrecht, Netherlands
| | - Maaike A Sikma
- Dutch Poisons Information Center, University Medical Center Utrecht, Utrecht University, Utrecht, Netherlands.,Department of Intensive Care Medicine, University Medical Center Utrecht, Utrecht University, Utrecht, Netherlands
| | - Dylan W de Lange
- Dutch Poisons Information Center, University Medical Center Utrecht, Utrecht University, Utrecht, Netherlands.,Department of Intensive Care Medicine, University Medical Center Utrecht, Utrecht University, Utrecht, Netherlands
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Stanton MT. Part
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: Interactive case: Toxicology and poison control. JOURNAL OF THE AMERICAN COLLEGE OF CLINICAL PHARMACY 2022. [DOI: 10.1002/jac5.1725] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
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Cole JB, Lee SC, Prekker ME, Kunzler NM, Considine KA, Driver BE, Puskarich MA, Olives TD. Vasodilation in patients with calcium channel blocker poisoning treated with high-dose insulin: a comparison of amlodipine versus non-dihydropyridines. Clin Toxicol (Phila) 2022; 60:1205-1213. [DOI: 10.1080/15563650.2022.2131565] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/03/2022]
Affiliation(s)
- Jon B. Cole
- Minnesota Poison Control System, Department of Pharmacy, Hennepin Healthcare, Minneapolis, MN, USA
- Department of Emergency Medicine, Hennepin Healthcare, Minneapolis, MN, USA
- Department of Emergency Medicine, University of Minnesota Medical School, Minneapolis, MN, USA
| | - Samantha C. Lee
- Minnesota Poison Control System, Department of Pharmacy, Hennepin Healthcare, Minneapolis, MN, USA
- Department of Medicine, Division of Pulmonary & Critical Care Medicine, Hennepin Healthcare, Minneapolis, MN, USA
| | - Matthew E. Prekker
- Department of Emergency Medicine, Hennepin Healthcare, Minneapolis, MN, USA
- Department of Emergency Medicine, University of Minnesota Medical School, Minneapolis, MN, USA
- Department of Medicine, Division of Pulmonary & Critical Care Medicine, Hennepin Healthcare, Minneapolis, MN, USA
| | - Nathan M. Kunzler
- Minnesota Poison Control System, Department of Pharmacy, Hennepin Healthcare, Minneapolis, MN, USA
| | | | - Brian E. Driver
- Department of Emergency Medicine, Hennepin Healthcare, Minneapolis, MN, USA
- Department of Emergency Medicine, University of Minnesota Medical School, Minneapolis, MN, USA
| | - Michael A. Puskarich
- Department of Emergency Medicine, Hennepin Healthcare, Minneapolis, MN, USA
- Department of Emergency Medicine, University of Minnesota Medical School, Minneapolis, MN, USA
| | - Travis D. Olives
- Minnesota Poison Control System, Department of Pharmacy, Hennepin Healthcare, Minneapolis, MN, USA
- Department of Emergency Medicine, Hennepin Healthcare, Minneapolis, MN, USA
- Department of Emergency Medicine, University of Minnesota Medical School, Minneapolis, MN, USA
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Cole JH, Hughey SB, Geiger PG, Rapp-Santos KJ, Booth GJ. Hemodynamic Effects of Cardiovascular Medications in a Normovolemic and Hemorrhaged Yorkshire-cross Swine Model. Comp Med 2021; 72:38-44. [PMID: 34876241 DOI: 10.30802/aalas-cm-21-000080] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
Abstract
The Yorkshire-cross swine model is a valuable translational model commonly used to study cardiovascular physiologyand response to insult. Although the effects of vasoactive medications have been well described in healthy swine, the effects of these medications during hemorrhagic shock are less studied. In this study, we sought to expand the utility of the swine model by characterizing the hemodynamic changes that occurred after the administration of commonly available vasoactive medications during euvolemic and hypovolemic states. To this end, we anesthetized and established femoral arterial,central venous, and pulmonary arterial access in 15 juvenile Yorkshire-cross pigs. The pigs then received a series of rapidlymetabolized but highly vasoactive medications in a standard dosing sequence. After completion of this sequence, each pigunderwent a 30-mL/kg hemorrhage over 10 min, and the standard dosing sequence was repeated. We then used standard statisticaltechniques to compare the effects of these vasoactive medications on a variety of hemodynamic parameters betweenthe euvolemic and hemorrhagic states. All subjects completed the study protocol. The responses in the hemorrhagic state wereoften attenuated or even opposite of those in the euvolemic state. For example, phenylephrine decreased the mean arterialblood pressure during the euvolemic state but increased it in the hemorrhagic state. These results clarify previously poorlydefined responses to commonly used vasoactive agents during the hemorrhagic state in swine. Our findings also demonstratethe need to consider the complex and dynamic physiologic state of hemorrhage when anticipating the effects of vasoactivedrugs and planning study protocols.
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Tinsman AE, Bellis TJ. Hyperinsulinemia/euglycemia and intravenous lipid emulsion therapy for the management of severe amlodipine toxicosis in a cat. Clin Case Rep 2021; 9:e05175. [PMID: 34934496 PMCID: PMC8650752 DOI: 10.1002/ccr3.5175] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/27/2021] [Revised: 09/23/2021] [Accepted: 11/04/2021] [Indexed: 11/29/2022] Open
Abstract
Calcium-channel blockers (CCBs) are widely used in people and animals. Overdose can result in cardiovascular collapse and death. Hyperinsulinemia/euglycemia therapy (HIET) and intralipid therapy (ILT) are reported treatment options in people. This is the first report describing HIET and ILT as treatments for amlodipine toxicosis in a cat.
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Affiliation(s)
| | - Tara J. Bellis
- Emergency & Critical CareGarden State Veterinary ServicesIselinNJUSA
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Salam S, Nornhold B, Mallat J. Massive metoprolol overdose requiring ECMO: brief review of the evidence behind recommended treatments. BMJ Case Rep 2021; 14:e232130. [PMID: 33952561 PMCID: PMC8103398 DOI: 10.1136/bcr-2019-232130] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 04/22/2021] [Indexed: 11/04/2022] Open
Abstract
A man in his late 60s developed shock after ingesting 7500 mg of metoprolol tartrate that was refractory to all medical treatment including hyperinsulinaemic euglycaemia, intravenous lipid emulsion and dialysis, eventually needing rescue extracorporeal membrane oxygenation. A brief review of the recommended treatments in beta-blocker overdose is therefore warranted.
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Affiliation(s)
- Shameen Salam
- Critical Care Institute, Cleveland Clinic Abu Dhabi, Abu Dhabi, UAE
| | - Brandon Nornhold
- Department of Clinical Pharmacology, St Vincent's Hospital and Research Center, Erie, Pennsylvania, USA
| | - Jihad Mallat
- Critical Care Institute, Cleveland Clinic Abu Dhabi, Abu Dhabi, UAE
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Corcoran JN, Jacoby KJ, Olives TD, Bangh SA, Cole JB. Persistent Hyperinsulinemia Following High-Dose Insulin Therapy: A Case Report. J Med Toxicol 2020; 16:465-469. [PMID: 32656624 DOI: 10.1007/s13181-020-00796-2] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/18/2020] [Revised: 06/23/2020] [Accepted: 06/24/2020] [Indexed: 12/01/2022] Open
Abstract
INTRODUCTION Overdoses of beta-adrenergic antagonists and calcium channel antagonists represent an uncommonly encountered but highly morbid clinical presentation. Potential therapies include fluids, calcium salts, vasopressors, intravenous lipid emulsion, methylene blue, and high-dose insulin. Although high-dose insulin is commonly used, the kinetics of insulin under these conditions are unknown. CASE REPORT We present a case of a 51-year-old male who sustained a life-threatening overdose after ingesting approximately 40 tablets of a mixture of amlodipine 5 mg and metoprolol tartrate 25 mg. Due to severe bradycardia and hypotension, he was started on high-dose insulin (HDI) therapy; this was augmented with epinephrine. Despite the degree of his initial shock state, he ultimately recovered, and HDI was discontinued. Insulin was infused for a total of approximately 37 hours, most of which was dosed at 10 U/kg/hour; following discontinuation, serial serum insulin levels were drawn and remained at supraphysiologic levels for at least 24 hours and well above reference range for multiple days thereafter. CONCLUSION The kinetics of insulin following discontinuation of high-dose insulin therapy are largely unknown, but supraphysiologic insulin levels persist for some time following therapy; this may allow for simple discontinuation rather than titration of insulin at the end of therapy. Dextrose replacement is frequently needed; although the duration is often difficult to predict, prolonged infusions may not be necessary.
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Affiliation(s)
- Justin N Corcoran
- Minnesota Poison Control System, 701 Park Ave RL.240, Minneapolis, MN, 55415, USA.
| | | | - Travis D Olives
- Minnesota Poison Control System, 701 Park Ave RL.240, Minneapolis, MN, 55415, USA
| | - Stacey A Bangh
- Minnesota Poison Control System, 701 Park Ave RL.240, Minneapolis, MN, 55415, USA
| | - Jon B Cole
- Minnesota Poison Control System, 701 Park Ave RL.240, Minneapolis, MN, 55415, USA
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LeRoy JM, Boley SP, Corcoran JN, Engebretsen KM, Stellpflug SJ. Effect of Methylene Blue on a Porcine Model of Amlodipine Toxicity. J Med Toxicol 2020; 16:398-404. [PMID: 32495116 DOI: 10.1007/s13181-020-00780-w] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/30/2019] [Revised: 04/07/2020] [Accepted: 04/28/2020] [Indexed: 10/24/2022] Open
Abstract
INTRODUCTION Calcium channel blocker (CCB) overdoses cause significant morbidity and mortality. Dihydropyridine CCBs cause peripheral vascular dilation and at high doses cardiac dysfunction. Amlodipine, a dihydropyridine, causes peripheral vasodilation from release of nitric oxide (NO) in addition to calcium channel blockade; NO scavenging is a potential treatment. Methylene blue (MB) inhibits NO directly and inhibits NO production. We compared the effects of MB versus norepinephrine (NE), with time to death as the primary outcome, in a porcine amlodipine toxicity model. METHODS Animals were anesthetized and instrumented, and an amlodipine infusion was administered to mimic oral overdose. After 70 minutes, each group was resuscitated with normal saline. Animals in each group were then randomized to receive either MB or NE. Hemodynamic parameters, including mean arterial pressure and cardiac output, were recorded every 10 minutes. The primary outcome was survival time (Kaplan-Meier analysis and log-rank test). RESULTS Interim analysis after 15 animals (7 MB, 8 NE) revealed that MB was clearly not superior to NE. Overall, 1 of 7 animals in the MB group survived to 300 minutes compared with 2 of 8 animals in the NE group. The median survival time was 100 minutes for the MB group and 177 minutes for the NE group. Survival time did not differ by group (log-rank test p = 0.29). CONCLUSION In this porcine model of amlodipine toxicity, methylene blue did not improve survival time compared with norepinephrine. Whether methylene blue is beneficial in combatting distributive shock in amlodipine toxicity remains unclear and requires further study.
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Affiliation(s)
- Jenna M LeRoy
- Department of Emergency Medicine, Regions Hospital, Saint Paul, MN, USA.
| | - Sean P Boley
- Department of Emergency Medicine, United Hospital, Saint Paul, MN, USA
| | - Justin N Corcoran
- Department of Emergency Medicine, Regions Hospital, Saint Paul, MN, USA
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Rotella JA, Greene SL, Koutsogiannis Z, Graudins A, Hung Leang Y, Kuan K, Baxter H, Bourke E, Wong A. Treatment for beta-blocker poisoning: a systematic review. Clin Toxicol (Phila) 2020; 58:943-983. [DOI: 10.1080/15563650.2020.1752918] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/07/2023]
Affiliation(s)
- Joe-Anthony Rotella
- Victorian Poisons Information Centre, Austin Health, Victoria, Australia
- Department of Emergency Medicine, Northern Health, Epping, Victoria
| | - Shaun L. Greene
- Victorian Poisons Information Centre, Austin Health, Victoria, Australia
- Department of Medicine, Faculty of Medicine, University of Melbourne, Victoria, Australia
| | - Zeff Koutsogiannis
- Victorian Poisons Information Centre, Austin Health, Victoria, Australia
- Department of Emergency Medicine, Northern Health, Epping, Victoria
| | - Andis Graudins
- Victorian Poisons Information Centre, Austin Health, Victoria, Australia
- Monash Toxicology and Emergency Department, Monash Health, Victoria, Australia
- Department of Medicine, School of Clinical Sciences at Monash Health, Monash University, Victoria, Australia
| | - Yit Hung Leang
- Victorian Poisons Information Centre, Austin Health, Victoria, Australia
| | - Kelvin Kuan
- Department of Emergency Medicine, Changi General Hospital, Singapore, Singapore
| | - Helen Baxter
- Austin Health Library, Austin Health, Victoria, Australia
| | - Elyssia Bourke
- Victorian Poisons Information Centre, Austin Health, Victoria, Australia
| | - Anselm Wong
- Victorian Poisons Information Centre, Austin Health, Victoria, Australia
- Department of Medicine, School of Clinical Sciences at Monash Health, Monash University, Victoria, Australia
- Department of Medicine and Radiology, Centre for Integrated Critical Care, Melbourne Medical School, University of Melbourne, Victoria, Australia
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Lindeman E, Ålebring J, Johansson A, Ahlner J, Kugelberg FC, Nordmark Grass J. The unknown known: non-cardiogenic pulmonary edema in amlodipine poisoning, a cohort study. Clin Toxicol (Phila) 2020; 58:1042-1049. [PMID: 32114860 DOI: 10.1080/15563650.2020.1725034] [Citation(s) in RCA: 13] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/24/2022]
Abstract
Context: Amlodipine is the most common calcium channel blocker (CCB) on the Swedish market, and poison center (PC) consultations for amlodipine overdoses are increasing. The clinical picture is dominated by vasodilation with relative preservation of cardiac function. CCBs selectively dilate vessels on the afferent side of the capillary network which, in states of preserved or increased blood flow may lead to edema formation, including non-cardiogenic pulmonary edema (NCPE). This complication has been considered rare in CCB poisoning. In this cohort study of nineteen amlodipine poisonings with high amlodipine blood levels, the incidence and clinical significance of NCPE in severe amlodipine poisoning are explored.Methods: During 2017-2018 the Swedish PC prospectively encouraged the gathering of blood samples in amlodipine poisonings with symptoms requiring treatment with inotropes or vasopressors. Samples were sent by mail to the Forensic Toxicology Division at the Swedish National Board of Forensic Medicine for screening and quantification of relevant toxicants. Patients with blood amlodipine levels >0.25 µg/mL were included in a cohort whose case details were gathered from medical records and PC-case notes with a special focus on signs of NCPE.Results: Nineteen patients met the blood amlodipine inclusion criteria. Four (21%) died and one patient was treated with VA-ECMO. Nine patients developed NCPE defined as a need for positive pressure ventilation (PPV) while having an echocardiographically normal left ventricular function.Conclusion: In this prospective cohort study of consecutive and analytically confirmed significant amlodipine poisonings NCPE was a common finding occurring in 47% of the whole cohort and in 64% of patients who did not go on to develop complete hemodynamic collapse.
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Affiliation(s)
- Erik Lindeman
- Swedish Poisons Information Center, Stockholm, Sweden
| | - Jonas Ålebring
- Department of Anesthesiology and Intensive Care, Skåne University Hospital, Lund, Sweden
| | - Anna Johansson
- Department of Forensic Genetics and Forensic Toxicology, National Board of Forensic Medicine, Linköping, Sweden
| | - Johan Ahlner
- Department of Forensic Genetics and Forensic Toxicology, National Board of Forensic Medicine, Linköping, Sweden.,Department of Medical and Health Sciences Division of Drug Research, Linköping University, Linköping, Sweden
| | - Fredrik C Kugelberg
- Department of Forensic Genetics and Forensic Toxicology, National Board of Forensic Medicine, Linköping, Sweden
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Use of a Porcine Model to Evaluate the Risks and Benefits of Vasopressors in Propranolol Poisoning. J Med Toxicol 2020; 16:212-221. [PMID: 31981076 DOI: 10.1007/s13181-020-00758-8] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/23/2019] [Revised: 12/18/2019] [Accepted: 01/05/2020] [Indexed: 10/25/2022] Open
Abstract
INTRODUCTION Vasopressors are a commonly used treatment in beta-blocker poisoning despite evidence they may be ineffective or harmful. The primary objective of the present study is to use previously collected data from two prior studies (high-dose insulin (HDI) versus vasopressin + epinephrine and a placebo-controlled HDI study) to compare survival between vasopressin + epinephrine and placebo. Secondary outcomes included a comparison with HDI as well as comparisons with hemodynamic parameters, including mean arterial pressure (MAP), cardiac output (CO), heart rate (HR), and systemic vascular resistance (SVR). METHODS Cardiogenic shock was induced in healthy pigs with a bolus of 0.5 mg/kg of intravenous propranolol followed by an infusion of 0.25 mg/kg/minute until the point of toxicity, defined as (0.75 × initial HR × initial MAP), at which point the infusion was reduced to 0.125 mg/kg/minute for 240 (vasopressin + epinephrine or HDI) or 360 minutes (placebo) or until death. RESULTS Survival was significantly lower in pigs receiving vasopressin + epinephrine (0%, 0/5) than in pigs receiving placebo (50%, 2/4) (p < 0.01). Survival was significantly higher with HDI compared with both groups (100%, 5/5) (p < 0.01). All vasopressin + epinephrine pigs died within 100 minutes after reaching toxicity. Over the course of the resuscitation, we observed a statistically significant steady decrease in CO and HR in the vasopressin + epinephrine group compared with placebo (p < 0.01). In contrast, we observed a statistically significant change in MAP and SVR that followed a parabolic arc, with MAP and SVR rising significantly initially in the vasopressin + epinephrine group then rapidly falling until death (p < 0.01). CONCLUSIONS Mortality was higher with vasopressors compared with placebo in this porcine model of propranolol poisoning. Further studies are warranted to define the optimal timing and role of vasopressors in beta-blocker poisoning.
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Boley SP, Mackenzie RB, LeRoy JM, Engebretsen KM, Stellpflug SJ. Development and Feasibility of a Porcine Model of Amlodipine Toxicity. J Med Toxicol 2019; 16:61-66. [PMID: 31385194 DOI: 10.1007/s13181-019-00721-2] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/06/2019] [Revised: 07/12/2019] [Accepted: 07/12/2019] [Indexed: 11/26/2022] Open
Abstract
INTRODUCTION Toxicity related to calcium-channel blockers remains a significant cause of morbidity and mortality. Amlodipine-induced shock is unique in that its mechanism of action is thought to occur in part via the release of nitric oxide (NO) in the peripheral vasculature. Specific therapeutic interventions, including methylene blue (an NO scavenger), have been suggested, but efficacy studies are severely limited. To facilitate a larger porcine study into the effect of various interventions on amlodipine toxicity, we undertook this model development and feasibility study. METHODS Intravenous amlodipine was prepared by dissolving commercially obtained amlodipine tablets in dimethylsulfoxide. The concentration of the drug was verified using ultraviolet spectroscopy. We administered this solution to three animals in order to determine a toxic dose, capable of facilitating a two-arm study of amlodipine toxicity. RESULTS The first pig died rapidly after the bolus infusion. The second pig developed mild toxicity, but the dissolution of the plastic tubing by the solvent and subsequent leakage limited the interpretability of the result. The third animal developed expected toxicity with an infusion rate between 2.0 and 5.5 mg/kg/h. CONCLUSION This study demonstrates a potentially repeatable model of amlodipine-induced toxic shock using intravenous administration of amlodipine and several methodological considerations for researchers undertaking similar work.
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Affiliation(s)
- Sean P Boley
- Department of Emergency Medicine, United Hospital, St. Paul, MN, USA
| | | | - Jenna M LeRoy
- Department of Emergency Medicine, Regions Hospital, St. Paul, MN, USA
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