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Liu B, Li M, Wang J, Zhang F, Wang F, Jin C, Li J, Wang Y, Sanderson TH, Zhang R. The role of magnesium in cardiac arrest. Front Nutr 2024; 11:1387268. [PMID: 38812935 PMCID: PMC11133868 DOI: 10.3389/fnut.2024.1387268] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/17/2024] [Accepted: 04/22/2024] [Indexed: 05/31/2024] Open
Abstract
Cardiac arrest is a leading cause of death globally. Only 25.8% of in-hospital and 33.5% of out-of-hospital individuals who achieve spontaneous circulation following cardiac arrest survive to leave the hospital. Respiratory failure and acute coronary syndrome are the two most common etiologies of cardiac arrest. Effort has been made to improve the outcomes of individuals resuscitated from cardiac arrest. Magnesium is an ion that is critical to the function of all cells and organs. It is often overlooked in everyday clinical practice. At present, there have only been a small number of reviews discussing the role of magnesium in cardiac arrest. In this review, for the first time, we provide a comprehensive overview of magnesium research in cardiac arrest focusing on the effects of magnesium on the occurrence and prognosis of cardiac arrest, as well as in the two main diseases causing cardiac arrest, respiratory failure and acute coronary syndrome. The current findings support the view that magnesium disorder is associated with increased risk of cardiac arrest as well as respiratory failure and acute coronary syndrome.
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Affiliation(s)
- Baoshan Liu
- School of Clinical Medicine, Shandong Second Medical University, Weifang People’s Hospital, Weifang, China
- Department of Cardiology, Key Laboratory of Cardiopulmonary-Cerebral Resuscitation Research of Weifang, The First Affiliated Hospital of Shandong Second Medical University, Weifang People’s Hospital, Weifang, China
| | - Muyuan Li
- School of Clinical Medicine, Shandong Second Medical University, Weifang People’s Hospital, Weifang, China
- Department of Cardiology, Key Laboratory of Cardiopulmonary-Cerebral Resuscitation Research of Weifang, The First Affiliated Hospital of Shandong Second Medical University, Weifang People’s Hospital, Weifang, China
| | - Jian Wang
- School of Clinical Medicine, Shandong Second Medical University, Weifang People’s Hospital, Weifang, China
- Department of Cardiology, Key Laboratory of Cardiopulmonary-Cerebral Resuscitation Research of Weifang, The First Affiliated Hospital of Shandong Second Medical University, Weifang People’s Hospital, Weifang, China
| | - Fengli Zhang
- School of Clinical Medicine, Shandong Second Medical University, Weifang People’s Hospital, Weifang, China
- Department of Cardiology, Key Laboratory of Cardiopulmonary-Cerebral Resuscitation Research of Weifang, The First Affiliated Hospital of Shandong Second Medical University, Weifang People’s Hospital, Weifang, China
| | - Fangze Wang
- School of Clinical Medicine, Shandong Second Medical University, Weifang People’s Hospital, Weifang, China
- Department of Cardiology, Key Laboratory of Cardiopulmonary-Cerebral Resuscitation Research of Weifang, The First Affiliated Hospital of Shandong Second Medical University, Weifang People’s Hospital, Weifang, China
| | - Caicai Jin
- School of Clinical Medicine, Shandong Second Medical University, Weifang People’s Hospital, Weifang, China
- Department of Cardiology, Key Laboratory of Cardiopulmonary-Cerebral Resuscitation Research of Weifang, The First Affiliated Hospital of Shandong Second Medical University, Weifang People’s Hospital, Weifang, China
| | - Jiayi Li
- School of Clinical Medicine, Shandong Second Medical University, Weifang People’s Hospital, Weifang, China
- Department of Cardiology, Key Laboratory of Cardiopulmonary-Cerebral Resuscitation Research of Weifang, The First Affiliated Hospital of Shandong Second Medical University, Weifang People’s Hospital, Weifang, China
| | - Yanran Wang
- Department of Cardiology, Key Laboratory of Cardiopulmonary-Cerebral Resuscitation Research of Weifang, The First Affiliated Hospital of Shandong Second Medical University, Weifang People’s Hospital, Weifang, China
- School of Anesthesiology, Shandong Second Medical University, Weifang, China
| | - Thomas Hudson Sanderson
- Department of Emergency Medicine, University of Michigan Medical School, Ann Arbor, MI, United States
| | - Rui Zhang
- School of Clinical Medicine, Shandong Second Medical University, Weifang People’s Hospital, Weifang, China
- Department of Cardiology, Key Laboratory of Cardiopulmonary-Cerebral Resuscitation Research of Weifang, The First Affiliated Hospital of Shandong Second Medical University, Weifang People’s Hospital, Weifang, China
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Petrucelli N, Barra ME, Koehl JL. Evaluation of Medication Exposure on Exacerbation of Disease in Patients With Myasthenia Gravis. Neurohospitalist 2024; 14:52-57. [PMID: 38235027 PMCID: PMC10790617 DOI: 10.1177/19418744231206256] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/19/2024] Open
Abstract
Background and Purpose In patients with myasthenia gravis (MG), worsening of symptoms poses a risk of respiratory failure which can be precipitated by medication use. Although purported, the risks associated with administration of certain medications are not fully elucidated. Thus, clinical decision support involving a best practice alert was executed to caution providers of drug-disease interactions when ordering a potentially harmful medication. We performed an analysis of the alert overrides with subsequent medication exposure to determine the incidence of MG exacerbations. Methods This retrospective chart-review evaluated adult patients with MG at 2 large academic medical centers via electronic health records between November-2019 and November-2021 who received a medication following override of the clinical decision support tool. The primary outcome was proportion of patient encounters complicated by myasthenic exacerbations after potentially harmful medication administration. Secondary outcomes included changes in motor strength, length of stay, discharge disposition, unplanned level-of-care escalations, and changes to immunosuppressant therapy following medication administration. Results A total of 70 orders were assessed in 38 patients across 55 encounters. Medications administered during these encounters included macrolides, fluoroquinolones, β-blockers, calcium channel blockers, and magnesium sulfate. Exacerbation of disease occurred in 7 patient encounters (12.7%) and occurred after intravenous magnesium or intravenous labetalol. In 5/7 events, at least 1 other risk factor associated with a myasthenic exacerbation was present. Conclusions Of the medications reported to potentially worsen MG, intravenous labetalol and intravenous magnesium were the 2 agents associated with myasthenic exacerbations with a higher incidence in patients harboring additional risk factors.
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Affiliation(s)
- Nick Petrucelli
- Department of Pharmacy, Massachusetts General Hospital, Boston, MA, USA
| | - Megan E. Barra
- Department of Pharmacy, Massachusetts General Hospital, Boston, MA, USA
| | - Jennifer L. Koehl
- Department of Pharmacy, Massachusetts General Hospital, Boston, MA, USA
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Jessop K. Intravenous magnesium sulfate inducing acute respiratory failure in a patient with myasthenia gravis. BMJ Case Rep 2022; 15:e250455. [PMID: 35738845 PMCID: PMC9226880 DOI: 10.1136/bcr-2022-250455] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 06/05/2022] [Indexed: 11/03/2022] Open
Abstract
A woman in her 90s with a background of myasthenia gravis and atrial fibrillation presented to hospital following a fall. While in the emergency department it was noted that she was in atrial fibrillation with a fast-ventricular response and as part of her management was given intravenous magnesium. Following this she developed acute respiratory failure and required intubation and ventilation. The patient recovered quickly and was extubated in the intensive care unit the next day. On subsequent days, the patient received two further doses of intravenous magnesium before the link was identified. On both of these occasions she again developed respiratory failure which were managed with non-invasive ventilation. This case highlights the importance of all members of the team being aware of the drugs that can induce a myasthenic crisis. It also stimulates further research into the development of a guide of how to safely treat symptomatic hypomagnesaemia in patients with myasthenia gravis.
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Affiliation(s)
- Kayleigh Jessop
- Anaesthetics, East Kent Hospitals University NHS Foundation Trust, Canterbury, UK
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Myasthenia Gravis Masquerading as Status Asthmaticus. Case Rep Pediatr 2022; 2021:6959701. [PMID: 34992892 PMCID: PMC8727132 DOI: 10.1155/2021/6959701] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/02/2021] [Revised: 11/23/2021] [Accepted: 12/03/2021] [Indexed: 11/18/2022] Open
Abstract
Myasthenia gravis, an autoimmune disorder of neuromuscular transmission, can lead to varying degrees of weakness and fatigability of the skeletal musculature. Juvenile myasthenia gravis accounts for 10–15% of all cases of myasthenia gravis. The clinical presentation of juvenile myasthenia gravis varies tremendously, which presents itself as a diagnostic challenge for clinicians. We report a case of a 15-year-old female with mild intermittent asthma presenting with shortness of breath. Acute onset of dyspnea is a common chief complaint amongst the pediatric population with a broad differential diagnosis. Our patient was presumptively treated for status asthmaticus and required invasive mechanical ventilation. After extubating, the patient showed persistent ptosis, which led to the eventual work-up of myasthenia gravis. Upon further review, this patient had months of intermittent symptoms including ptosis and fatigue which went previously undiagnosed. This case demonstrates that dyspnea in an asthmatic can occur from nonairway processes and, if missed, may result in overtreatment of asthma or delayed diagnosis of an important neuromuscular process.
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Finder JD. Respiratory Complications in Neuromuscular Disorders. Neuromuscul Disord 2022. [DOI: 10.1016/b978-0-323-71317-7.00002-0] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
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Sheikh S, Alvi U, Soliven B, Rezania K. Drugs That Induce or Cause Deterioration of Myasthenia Gravis: An Update. J Clin Med 2021; 10:jcm10071537. [PMID: 33917535 PMCID: PMC8038781 DOI: 10.3390/jcm10071537] [Citation(s) in RCA: 48] [Impact Index Per Article: 16.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/16/2021] [Revised: 03/24/2021] [Accepted: 03/31/2021] [Indexed: 12/20/2022] Open
Abstract
Myasthenia gravis (MG) is an autoimmune neuromuscular disorder which is characterized by presence of antibodies against acetylcholine receptors (AChRs) or other proteins of the postsynaptic membrane resulting in damage to postsynaptic membrane, decreased number of AChRs or blocking of the receptors by autoantibodies. A number of drugs such as immune checkpoint inhibitors, penicillamine, tyrosine kinase inhibitors and interferons may induce de novo MG by altering the immune homeostasis mechanisms which prevent emergence of autoimmune diseases such as MG. Other drugs, especially certain antibiotics, antiarrhythmics, anesthetics and neuromuscular blockers, have deleterious effects on neuromuscular transmission, resulting in increased weakness in MG or MG-like symptoms in patients who do not have MG, with the latter usually being under medical circumstances such as kidney failure. This review summarizes the drugs which can cause de novo MG, MG exacerbation or MG-like symptoms in nonmyasthenic patients.
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Grover KM, Sripathi N. Myasthenia gravis and pregnancy. Muscle Nerve 2020; 62:664-672. [PMID: 32929722 DOI: 10.1002/mus.27064] [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: 09/11/2020] [Accepted: 09/11/2020] [Indexed: 12/23/2022]
Abstract
Myasthenia gravis (MG) is an autoimmune disorder with bimodal age of presentation, occurring in young women of reproductive age and at an older age in men. Occasionally, MG is diagnosed during pregnancy. Management of MG includes symptomatic treatment with cholinesterase inhibitors and immunosuppressive therapy for controlling the disease activity. Treatment of MG in women of reproductive age, who may be contemplating pregnancy, requires discussion regarding the choice of medication as well as the understanding of risks/adverse effects involved with various treatments. During the peripartum period, it is essential to ensure careful monitoring of the disease state along with the well-being of the mother and fetus and to coordinate neonatal monitoring overseen by a multidisciplinary team comprising a high-risk maternal fetal medicine specialist, a neurologist familiar with these complex issues, and a neonatologist.
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Affiliation(s)
- Kavita M Grover
- Department of Neurology, Henry Ford Hospital, Detroit, Michigan.,Assistant Professor, Wayne State University, Detroit, Michigan
| | - Naganand Sripathi
- Department of Neurology, Henry Ford Hospital, Detroit, Michigan.,Clinical Assistant Professor, Wayne State University, Detroit, Michigan
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Krenn M, Grisold A, Wohlfarth P, Rath J, Cetin H, Koneczny I, Zimprich F. Pathomechanisms and Clinical Implications of Myasthenic Syndromes Exacerbated and Induced by Medical Treatments. Front Mol Neurosci 2020; 13:156. [PMID: 32922263 PMCID: PMC7457047 DOI: 10.3389/fnmol.2020.00156] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/31/2020] [Accepted: 07/28/2020] [Indexed: 12/21/2022] Open
Abstract
Myasthenic syndromes are typically characterized by muscle weakness and increased fatigability due to an impaired transmission at the neuromuscular junction (NMJ). Most cases are caused by acquired autoimmune conditions such as myasthenia gravis (MG), typically with antibodies against the acetylcholine receptor (AChR). Different drugs are among the major factors that may complicate pre-existing autoimmune myasthenic conditions by further impairing transmission at the NMJ. Some clinical observations are substantiated by experimental data, indicating that presynaptic, postsynaptic or more complex pathomechanisms at the NMJ may be involved, depending on the individual compound. Most robust data exist for the risks associated with some antibiotics (e.g., aminoglycosides, ketolides, fluoroquinolones) and cardiovascular medications (e.g., class Ia antiarrhythmics, beta blockers). Apart from primarily autoimmune-mediated disorders of the NMJ, de novo myasthenic manifestations may also be triggered by medical treatments that induce an autoimmune reaction. Most notably, there is growing evidence that the immune checkpoint inhibitors (ICI), a modern class of drugs to treat various malignancies, represent a relevant risk factor to develop severe and progressive medication-induced myasthenia via an immune-mediated mechanism. From a clinical perspective, it is of utmost importance for the treating physicians to be aware of such adverse treatment effects and their consequences. In this article, we aim to summarize existing evidence regarding the key molecular and immunological mechanisms as well as the clinical implications of medication-aggravated and medication-induced myasthenic syndromes.
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Affiliation(s)
- Martin Krenn
- Department of Neurology, Medical University of Vienna, Vienna, Austria
| | - Anna Grisold
- Department of Neurology, Medical University of Vienna, Vienna, Austria
| | - Philipp Wohlfarth
- Division of Blood and Marrow Transplantation, Department of Medicine I, Medical University of Vienna, Vienna, Austria
| | - Jakob Rath
- Department of Neurology, Medical University of Vienna, Vienna, Austria
| | - Hakan Cetin
- Department of Neurology, Medical University of Vienna, Vienna, Austria
| | - Inga Koneczny
- Department of Neurology, Medical University of Vienna, Vienna, Austria.,Division of Neuropathology and Neurochemistry, Department of Neurology, Medical University of Vienna, Vienna, Austria
| | - Fritz Zimprich
- Department of Neurology, Medical University of Vienna, Vienna, Austria
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Roper J, Fleming ME, Long B, Koyfman A. Myasthenia Gravis and Crisis: Evaluation and Management in the Emergency Department. J Emerg Med 2017; 53:843-853. [PMID: 28916122 DOI: 10.1016/j.jemermed.2017.06.009] [Citation(s) in RCA: 24] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/22/2017] [Accepted: 06/28/2017] [Indexed: 10/18/2022]
Abstract
BACKGROUND Myasthenia gravis (MG) is an uncommon autoimmune disorder affecting the neuromuscular junction and manifesting as muscle weakness. A multitude of stressors can exacerbate MG. When symptoms are exacerbated, muscle weakness can be severe enough to result in respiratory failure, a condition known as myasthenic crisis (MC). OBJECTIVE This review discusses risk factors, diagnosis, management, and iatrogenic avoidance of MC. DISCUSSION MC can affect any age, ethnicity, or sex and can be precipitated with any stressor, infection being the most common. MC is a clinical diagnosis defined by respiratory failure caused by exacerbation of MG. Muscle weakness can involve any voluntary muscle. MC can be differentiated from other neuromuscular junction diseases by the presence of normal reflexes, normal sensation, lack of autonomic symptoms, lack of fasciculations, and worsening weakness with repetitive motion. Treatment should target the inciting event and airway support. All acetylcholinesterase inhibitors should be avoided in crisis, including edrophonium testing and corticosteroids initially. Respiratory support can begin with noninvasive positive-pressure ventilation, as this has been successful even in patients with bulbar weakness. If intubation is necessary, consider avoiding paralytics or use a reduced dose of nondepolarizing agents. CONCLUSIONS MC should be in the differential of any patient with muscular weakness and respiratory compromise. Emergency department management of MC should focus on ruling out infection and respiratory support. Strong consideration should be given to beginning with noninvasive positive-pressure ventilation for ventilatory support. Corticosteroids, depolarizing paralytics, and acetylcholinesterase inhibitors should be avoided in patients with MC in the emergency department.
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Affiliation(s)
- Jamie Roper
- Department of Emergency Medicine, San Antonio Military Medical Center, Fort Sam Houston, Texas
| | - M Emily Fleming
- Department of Emergency Medicine, San Antonio Military Medical Center, Fort Sam Houston, Texas
| | - Brit Long
- Department of Emergency Medicine, San Antonio Military Medical Center, Fort Sam Houston, Texas
| | - Alex Koyfman
- Department of Emergency Medicine, The University of Texas Southwestern Medical Center, Dallas, Texas
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