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Guilliams KP, Harrar D. Ketamine for Status Epilepticus in Children: Searching for the Right Drug for the Right Patient. Neurocrit Care 2024; 40:45-47. [PMID: 37919546 DOI: 10.1007/s12028-023-01881-4] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/06/2023] [Accepted: 10/10/2023] [Indexed: 11/04/2023]
Affiliation(s)
- Kristin P Guilliams
- Departments of Neurology, Pediatrics, and Radiology, Washington University School of Medicine, 660 S. Euclid Ave MSC 8111-43-1260, St. Louis, MO, 63110, USA.
| | - Dana Harrar
- Division of Child Neurology, Children's National Hospital, 111 Michigan Ave, NW, Washington, District of Columbia, 20010, USA
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Loi MV, Lee JH, Huh JW, Mallory P, Napolitano N, Shults J, Krawiec C, Shenoi A, Polikoff L, Al-Subu A, Sanders R, Toal M, Branca A, Glater-Welt L, Ducharme-Crevier L, Breuer R, Parsons S, Harwayne-Gidansky I, Kelly S, Motomura M, Gladen K, Pinto M, Giuliano J, Bysani G, Berkenbosch J, Biagas K, Rehder K, Kasagi M, Lee A, Jung P, Shetty R, Nadkarni V, Nishisaki A. Ketamine Use in the Intubation of Critically Ill Children with Neurological Indications: A Multicenter Retrospective Analysis. Neurocrit Care 2024; 40:205-214. [PMID: 37160847 DOI: 10.1007/s12028-023-01734-0] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/19/2022] [Accepted: 04/10/2023] [Indexed: 05/11/2023]
Abstract
BACKGROUND Ketamine has traditionally been avoided for tracheal intubations (TIs) in patients with acute neurological conditions. We evaluate its current usage pattern in these patients and any associated adverse events. METHODS We conducted a retrospective observational cohort study of critically ill children undergoing TI for neurological indications in 53 international pediatric intensive care units and emergency departments. We screened all intubations from 2014 to 2020 entered into the multicenter National Emergency Airway Registry for Children (NEAR4KIDS) registry database. Patients were included if they were under the age of 18 years and underwent TI for a primary neurological indication. Usage patterns and reported periprocedural composite adverse outcomes (hypoxemia < 80%, hypotension/hypertension, cardiac arrest, and dysrhythmia) were noted. RESULTS Of 21,562 TIs, 2,073 (9.6%) were performed for a primary neurological indication, including 190 for traumatic brain injury/trauma. Patients received ketamine in 495 TIs (23.9%), which increased from 10% in 2014 to 41% in 2020 (p < 0.001). Ketamine use was associated with a coindication of respiratory failure, difficult airway history, and use of vagolytic agents, apneic oxygenation, and video laryngoscopy. Composite adverse outcomes were reported in 289 (13.9%) Tis and were more common in the ketamine group (17.0% vs. 13.0%, p = 0.026). After adjusting for location, patient age and codiagnoses, the presence of respiratory failure and shock, difficult airway history, provider demographics, intubating device, and the use of apneic oxygenation, vagolytic agents, and neuromuscular blockade, ketamine use was not significantly associated with increased composite adverse outcomes (adjusted odds ratio 1.34, 95% confidence interval CI 0.99-1.81, p = 0.057). This paucity of association remained even when only neurotrauma intubations were considered (10.6% vs. 7.7%, p = 0.528). CONCLUSIONS This retrospective cohort study did not demonstrate an association between procedural ketamine use and increased risk of peri-intubation hypoxemia and hemodynamic instability in patients intubated for neurological indications.
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Affiliation(s)
- Mervin V Loi
- Department of Pediatric Subspecialties, Children's Intensive Care Unit, KK Women's and Children's Hospital, 100 Bukit Timah Road, Singapore, Singapore.
| | - Jan Hau Lee
- Department of Pediatric Subspecialties, Children's Intensive Care Unit, KK Women's and Children's Hospital, 100 Bukit Timah Road, Singapore, Singapore
| | - Jimmy W Huh
- Department of Anesthesiology and Critical Care Medicine, Children's Hospital of Philadelphia and University of Pennsylvania Perelman School of Medicine, Philadelphia, PA, USA
| | - Palen Mallory
- Department of Pediatric Critical Care Medicine, Duke Children's Hospital and Health Center, Durham, NC, USA
| | - Natalie Napolitano
- Respiratory Therapy Department, Children's Hospital of Philadelphia, Philadelphia, PA, USA
| | - Justine Shults
- Department of Biostatistics, Children's Hospital of Philadelphia and University of Pennsylvania Perelman School of Medicine, Philadelphia, PA, USA
| | - Conrad Krawiec
- Departments of Pediatric Critical Care Medicine and Pediatrics, Penn State Health Children's Hospital, Hershey, PA, USA
| | - Asha Shenoi
- Department of Pediatrics, University of Kentucky, Lexington, KY, USA
| | - Lee Polikoff
- Department of Pediatric Critical Medicine, Warren Alpert Medical School of Brown University, Providence, RI, USA
| | - Awni Al-Subu
- Division of Pediatric Critical Care Medicine, Department of Pediatrics, University of Wisconsin, School of Medicine and Public Health, Madison, WI, USA
| | - Ronald Sanders
- Division of Critical Care Medicine, Arkansas Children's Hospital, Little Rock, AR, USA
| | - Megan Toal
- Division of Pediatric Critical Care Medicine, Department of Pediatrics, Weill Cornell Medicine, New York, NY, USA
| | - Aline Branca
- Department of Pediatric Critical Care Medicine, Phoenix Children's Hospital, Phoenix, AZ, USA
| | - Lily Glater-Welt
- Department of Pediatric Critical Care Medicine, Cohen Children's Medical Center of New York, New Hyde Park, NY, USA
| | - Laurence Ducharme-Crevier
- Division of Pediatric Critical Care Medicine, Department of Pediatrics, Centre Hospitalier Universitaire Sainte-Justine, Montreal, Canada
| | - Ryan Breuer
- Division of Critical Care Medicine, Department of Pediatrics, John R. Oishei Children's Hospital, Buffalo, NY, USA
| | - Simon Parsons
- Section of Critical Care Medicine, Alberta Children's Hospital, Calgary, Canada
| | - Ilana Harwayne-Gidansky
- Division of Pediatric Critical Care Medicine, Department of Pediatrics, Albany Medical College, Albany, NY, USA
| | - Serena Kelly
- Division of Pediatric Critical Care Medicine, Department of Pediatrics, Oregon Health and Science University Doernbecher Children's Hospital, Portland, OR, USA
| | - Makoto Motomura
- Division of Pediatric Critical Care Medicine, Aichi Children's Health and Medical Center, Aichi, Japan
| | - Kelsey Gladen
- Department of Pediatric Critical Care Medicine, Phoenix Children's Hospital, Phoenix, AZ, USA
| | - Matthew Pinto
- Department of Pediatrics, New York Medical College, Valhalla, NY, USA
| | - John Giuliano
- Section of Pediatric Critical Care, Department of Pediatrics, Yale University School of Medicine, New Haven, CT, USA
| | - Gokul Bysani
- Department of Pediatrics, Medical City Children's Hospital, Dallas, TX, USA
| | - John Berkenbosch
- Department of Pediatric Critical Care, University of Louisville and Norton Children's Hospital, Louisville, KY, USA
| | - Katherine Biagas
- Division of Pediatric Critical Care Medicine, Department of Pediatrics, Renaissance School of Medicine at Stony, Brook University, Stony Brook, NY, USA
| | - Kyle Rehder
- Division of Pediatric Critical Care, Duke Children's Hospital, Durham, NC, USA
| | - Mioko Kasagi
- Division of Pediatric Critical Care Medicine, Tokyo Metropolitan Children's Medical Center, Tokyo, Japan
| | - Anthony Lee
- Division of Critical Care Medicine, Nationwide Children's Hospital, Columbus, OH, USA
| | - Philipp Jung
- Department of Pediatrics, University Hospital Schleswig-Holstein, Campus Luebeck, Luebeck, Germany
| | - Rakshay Shetty
- Pediatric Intensive Care, Rainbow Children's Hospital, Bengaluru, India
| | - Vinay Nadkarni
- Department of Anesthesiology and Critical Care Medicine, Children's Hospital of Philadelphia and University of Pennsylvania Perelman School of Medicine, Philadelphia, PA, USA
| | - Akira Nishisaki
- Department of Anesthesiology and Critical Care Medicine, Children's Hospital of Philadelphia and University of Pennsylvania Perelman School of Medicine, Philadelphia, PA, USA
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Dolmans RG, Nahed BV, Robertson FC, Peul WC, Rosenthal ES, Broekman ML. Practice-Pattern Variation in Sedation of Neurotrauma Patients in the Intensive Care Unit: An International Survey. J Intensive Care Med 2023; 38:1143-1150. [PMID: 37415510 PMCID: PMC10616999 DOI: 10.1177/08850666231186563] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/18/2023] [Accepted: 06/21/2023] [Indexed: 07/08/2023]
Abstract
Background: Analgo-sedation plays an important role during intensive care management of traumatic brain injury (TBI) patients, however, limited evidence is available to guide practice. We sought to quantify practice-pattern variation in neurotrauma sedation management, surveying an international sample of providers. Methods: An electronic survey consisting of 56 questions was distributed internationally to neurocritical care providers utilizing the Research Electronic Data Capture platform. Descriptive statistics were used to quantitatively describe and summarize the responses. Results: Ninety-five providers from 37 countries responded. 56.8% were attending physicians with primary medical training most commonly in intensive care medicine (68.4%) and anesthesiology (26.3%). Institutional sedation guidelines for TBI patients were available in 43.2%. Most common sedative agents for induction and maintenance, respectively, were propofol (87.5% and 88.4%), opioids (60.2% and 70.5%), and benzodiazepines (53.4% and 68.4%). Induction and maintenance sedatives, respectively, are mostly chosen according to provider preference (68.2% and 58.9%) rather than institutional guidelines (26.1% and 35.8%). Sedation duration for patients with intracranial hypertension ranged from 24 h to 14 days. Neurological wake-up testing (NWT) was routinely performed in 70.5%. The most common NWT frequency was every 24 h (47.8%), although 20.8% performed NWT at least every 2 h. Richmond Agitation and Sedation Scale targets varied from deep sedation (34.7%) to alert and calm (17.9%). Conclusions: Among critically ill TBI patients, sedation management follows provider preference rather than institutional sedation guidelines. Wide practice-pattern variation exists for the type, duration, and target of sedative management and NWT performance. Future comparative effectiveness research investigating these differences may help optimize sedation strategies to promote recovery.
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Affiliation(s)
- Rianne G.F. Dolmans
- Department of Neurosurgery, Leiden University Medical Center, Leiden, the Netherlands
- Department of Neurology, Massachusetts General Hospital, Harvard Medical School, Boston, MA, USA
| | - Brian V. Nahed
- Department of Neurosurgery, Massachusetts General Hospital, Harvard Medical School, Boston, MA, USA
| | - Faith C. Robertson
- Department of Neurosurgery, Massachusetts General Hospital, Harvard Medical School, Boston, MA, USA
| | - Wilco C. Peul
- Department of Neurosurgery, Haaglanden Medical Centre, The Hague, the Netherlands
- University Neurosurgical Center Holland, Leiden University Medical Center, Haaglanden Medical Center and Haga Teaching Hospital, Neurosurgery, Leiden, the Netherlands
| | - Eric S. Rosenthal
- Department of Neurology, Massachusetts General Hospital, Harvard Medical School, Boston, MA, USA
| | - Marike L.D. Broekman
- Department of Neurosurgery, Leiden University Medical Center, Leiden, the Netherlands
- Department of Neurosurgery, Haaglanden Medical Centre, The Hague, the Netherlands
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Zhang T, Deng D, Huang S, Fu D, Wang T, Xu F, Ma L, Ding Y, Wang K, Wang Y, Zhao W, Chen X. A retrospect and outlook on the neuroprotective effects of anesthetics in the era of endovascular therapy. Front Neurosci 2023; 17:1140275. [PMID: 37056305 PMCID: PMC10086253 DOI: 10.3389/fnins.2023.1140275] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/08/2023] [Accepted: 03/13/2023] [Indexed: 03/30/2023] Open
Abstract
Studies on the neuroprotective effects of anesthetics were carried out more than half a century ago. Subsequently, many cell and animal experiments attempted to verify the findings. However, in clinical trials, the neuroprotective effects of anesthetics were not observed. These contradictory results suggest a mismatch between basic research and clinical trials. The Stroke Therapy Academic Industry Roundtable X (STAIR) proposed that the emergence of endovascular thrombectomy (EVT) would provide a proper platform to verify the neuroprotective effects of anesthetics because the haemodynamics of patients undergoing EVT is very close to the ischaemia–reperfusion model in basic research. With the widespread use of EVT, it is necessary for us to re-examine the neuroprotective effects of anesthetics to guide the use of anesthetics during EVT because the choice of anesthesia is still based on team experience without definite guidelines. In this paper, we describe the research status of anesthesia in EVT and summarize the neuroprotective mechanisms of some anesthetics. Then, we focus on the contradictory results between clinical trials and basic research and discuss the causes. Finally, we provide an outlook on the neuroprotective effects of anesthetics in the era of endovascular therapy.
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Affiliation(s)
| | | | | | | | | | | | | | | | | | | | | | - Xiangdong Chen
- *Correspondence: Xiangdong Chen, ; orcid.org/0000-0003-3347-2947
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Chen X, Zheng X, Cai J, Yang X, Lin Y, Wu M, Deng X, Peng YG. Effect of Anesthetics on Functional Connectivity of Developing Brain. Front Hum Neurosci 2022; 16:853816. [PMID: 35360283 PMCID: PMC8963106 DOI: 10.3389/fnhum.2022.853816] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/13/2022] [Accepted: 02/21/2022] [Indexed: 11/27/2022] Open
Abstract
The potential anesthetic neurotoxicity on the neonate is an important focus of research investigation in the field of pediatric anesthesiology. It is essential to understand how these anesthetics may affect the development and growth of neonatal immature and vulnerable brains. Functional magnetic resonance imaging (fMRI) has suggested that using anesthetics result in reduced functional connectivity may consider as core sequence for the neurotoxicity and neurodegenerative changes in the developed brain. Anesthetics either directly impact the primary structures and functions of the brain or indirectly alter the hemodynamic parameters that contribute to cerebral blood flow (CBF) in neonatal patients. We hypothesis that anesthetic agents may either decrease the brain functional connectivity in neonatal patients or animals, which was observed by fMRI. This review will summarize the effect and mechanism of anesthesia on the rapid growth and development infant and neonate brain with fMRI through functional connectivity. It is possible to provide the new mechanism of neuronal injury induced by anesthetics and objective imaging evidence in animal developing brain.
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Affiliation(s)
- Xu Chen
- Department of Pharmacy, Chengdu Women’s and Children’s Central Hospital, School of Medicine, University of Electronic Science and Technology of China, Chengdu, China
| | - Xuemei Zheng
- School of Medicine, University of Electronic Science and Technology of China, Chengdu, China
| | - Jianghui Cai
- Department of Pharmacy, Chengdu Women’s and Children’s Central Hospital, School of Medicine, University of Electronic Science and Technology of China, Chengdu, China
| | - Xiao Yang
- Department of Obstetrics, Chengdu Women’s and Children’s Central Hospital, School of Medicine, University of Electronic Science and Technology of China, Chengdu, China
| | - Yonghong Lin
- Department of Gynecology, Chengdu Women’s and Children’s Central Hospital, School of Medicine, University of Electronic Science and Technology of China, Chengdu, China
| | - Mengjun Wu
- Department of Anesthesiology, Chengdu Women’s and Children’s Central Hospital, School of Medicine, University of Electronic Science and Technology of China, Chengdu, China
- *Correspondence: Mengjun Wu,
| | - Xiaofan Deng
- Center of Organ Transplantation, Sichuan Provincial People’s Hospital, Sichuan Academy of Medical Sciences, Chengdu, China
| | - Yong G. Peng
- Department of Anesthesiology, College of Medicine, University of Florida, Gainesville, FL, United States
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Roynard P, Bilderback A, Dewey CW. Intravenous Ketamine Bolus(es) for the Treatment of Status Epilepticus, Refractory Status Epilepticus, and Cluster Seizures: A Retrospective Study of 15 Dogs. Front Vet Sci 2021; 8:547279. [PMID: 33681317 PMCID: PMC7925624 DOI: 10.3389/fvets.2021.547279] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/31/2020] [Accepted: 01/07/2021] [Indexed: 12/02/2022] Open
Abstract
Status epilepticus (SE) and cluster seizures (CS) are common occurrences in veterinary neurology and frequent reasons of admission to veterinary hospitals. With prolonged seizure activity, gamma amino-butyric acid (GABA) receptors (GABAa receptors) become inactive, leading to a state of pharmacoresistance to benzodiazepines and other GABAergic medications, which is called refractory status epilepticus (RSE). Prolonged seizure activity is also associated with overexpression of N-methyl-D-aspartic (NMDA) receptors. Rodent models have shown the efficacy of ketamine (KET) in treating RSE, and its use has been reported in one canine case of RSE. Boluses of KET 5 mg/kg IV have become the preferred treatment for RSE in our hospital. A retrospective study was performed to evaluate and report our experience with KET IV bolus to treat prolonged and/or repeated seizure activity in cases of canine CS, SE, and RSE. A total of 15 dogs were retrieved, for 20 hospitalizations and 28 KET IV injections over 3 years. KET IV boluses were used 12 times for RSE (9 generalized seizures, 3 focal seizures) and KET terminated the episode of RSE 12/12 times (100%); however, seizures recurred 4/12 times (33%) within ≤6 h of KET IV bolus. When used for CS apart from episodes of RSE, KET IV bolus was associated with termination of the CS episode only 4/14 times (29%). Only 4/28 (14%) KET IV boluses were associated with adverse effects imputable only to the use of KET. One dog experienced a short, self-limited seizure activity during administration of KET IV, which was most likely related to a pre-mature use of KET IV (i.e., before GABAergic resistance and NMDA receptor overexpression had taken place). This study indicates that KET 5 mg/kg IV bolus may be successful for the treatment of RSE in dogs.
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Affiliation(s)
- Patrick Roynard
- Long Island Veterinary Specialists, Department of Neurology/Neurosurgery, Plainview, NY, United States
| | - Ann Bilderback
- VCA Northwest Veterinary Specialists, Clackamas, OR, United States
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Godoy DA, Badenes R, Pelosi P, Robba C. Ketamine in acute phase of severe traumatic brain injury "an old drug for new uses?". CRITICAL CARE : THE OFFICIAL JOURNAL OF THE CRITICAL CARE FORUM 2021; 25:19. [PMID: 33407737 PMCID: PMC7788834 DOI: 10.1186/s13054-020-03452-x] [Citation(s) in RCA: 19] [Impact Index Per Article: 6.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 11/02/2020] [Accepted: 12/22/2020] [Indexed: 01/02/2023]
Abstract
Maintaining an adequate level of sedation and analgesia plays a key role in the management of traumatic brain injury (TBI). To date, it is unclear which drug or combination of drugs is most effective in achieving these goals. Ketamine is an agent with attractive pharmacological and pharmacokinetics characteristics. Current evidence shows that ketamine does not increase and may instead decrease intracranial pressure, and its safety profile makes it a reliable tool in the prehospital environment. In this point of view, we discuss different aspects of the use of ketamine in the acute phase of TBI, with its potential benefits and pitfalls.
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Affiliation(s)
- Daniel Agustin Godoy
- Neurointensive Care Unit, Sanatorio Pasteur, Catamarca, Argentina.,Intensive Care Unit, Hospital Carlos Malbran, Catamarca, Argentina
| | - Rafael Badenes
- Anesthesiology and Surgical-Trauma Intensive Care, University Clinic Hospital, Valencia, Spain.,Department of Surgery, University of Valencia, Valencia, Spain.,INCLIVA Research Medical Institute, Valencia, Valencia, Spain
| | - Paolo Pelosi
- Anesthesia and Intensive Care, San Martino Policlinico Hospital, IRCCS for Oncology and Neurosciences, Genoa, Italy.,Department of Surgical Sciences and Integrated Diagnostics, University of Genoa, Genoa, Italy
| | - Chiara Robba
- Anesthesia and Intensive Care, San Martino Policlinico Hospital, IRCCS for Oncology and Neurosciences, Genoa, Italy. .,Department of Surgical Sciences and Integrated Diagnostics, University of Genoa, Genoa, Italy.
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Prakash S, Gupta AK, Meena JP, Seth R. A review of the clinical applications of ketamine in pediatric oncology. Pediatr Blood Cancer 2021; 68:e28785. [PMID: 33128439 DOI: 10.1002/pbc.28785] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/28/2020] [Revised: 10/16/2020] [Accepted: 10/19/2020] [Indexed: 12/30/2022]
Abstract
Ketamine is a dissociative anesthetic agent with excellent analgesic properties and a favorable safety profile. The feasibility and efficacy of various routes of administration have been established, including intravenous (IV), intramuscular (IM), oral, intranasal, rectal, and transdermal routes. The advent of newer anesthetic agents has led to a decline in the use of ketamine as an anesthetic, but its utility in short-term sedation and analgesia has expanded. Its value for chronic pain management in children with cancer is being increasingly recognized but requires more evidence. The use of topical ketamine is largely in investigational stages. Medical use of ketamine is, to a great extent, free from significant long-term neurological side effects. The objective of this review is to provide a brief account of the pharmacology of ketamine and primarily focus on the clinical applications of ketamine in pediatric oncology.
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Affiliation(s)
- Satya Prakash
- Department of Pediatrics, All India Institute of Medical Sciences, New Delhi, India
| | - Aditya Kumar Gupta
- Division of Pediatric Oncology, Department of Pediatrics, All India Institute of Medical Sciences, New Delhi, India
| | - Jagdish Prasad Meena
- Division of Pediatric Oncology, Department of Pediatrics, All India Institute of Medical Sciences, New Delhi, India
| | - Rachna Seth
- Division of Pediatric Oncology, Department of Pediatrics, All India Institute of Medical Sciences, New Delhi, India
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Sedatives in neurocritical care: an update on pharmacological agents and modes of sedation. Curr Opin Crit Care 2020; 25:97-104. [PMID: 30672819 DOI: 10.1097/mcc.0000000000000592] [Citation(s) in RCA: 12] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/08/2023]
Abstract
PURPOSE OF REVIEW In this article, the specific and general indications for sedatives in the neurocritical care unit are discussed, together with an overview on current insights in sedative protocols for these patients. In addition, physiological effects of sedative agents on the central nervous system are reviewed. RECENT FINDINGS In the general ICU population, a large body of evidence supports light protocolized sedation over indiscriminate deep sedation. Unfortunately, in patients with severe acute brain injury, the evidence from randomized controlled trials is scarce to nonexistent, and practice is supported by expert opinion, physiological studies and observational or small interventional trials. The different sedatives each have different beneficial effects and side-effects. SUMMARY Extrapolating the findings from studies in the general ICU population suggests to reserve deep continuous sedation in the neuro-ICU for specific indications. Although an improved understanding of cerebral physiological changes in patients with brain injury may be helpful to guide individualized sedation, we still lack the evidence base to make broad recommendations for specific patient groups.
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Slupe AM, Kirsch JR. Effects of anesthesia on cerebral blood flow, metabolism, and neuroprotection. J Cereb Blood Flow Metab 2018; 38:2192-2208. [PMID: 30009645 PMCID: PMC6282215 DOI: 10.1177/0271678x18789273] [Citation(s) in RCA: 160] [Impact Index Per Article: 26.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/25/2018] [Revised: 06/11/2018] [Accepted: 06/25/2018] [Indexed: 12/12/2022]
Abstract
Administration of anesthetic agents fundamentally shifts the responsibility for maintenance of homeostasis from the patient and their intrinsic physiological regulatory mechanisms to the anesthesiologist. Continuous delivery of oxygen and nutrients to the brain is necessary to prevent irreversible injury and arises from a complex series of regulatory mechanisms that ensure uninterrupted cerebral blood flow. Our understanding of these regulatory mechanisms and the effects of anesthetics on them has been driven by the tireless work of pioneers in the field. It is of paramount importance that the anesthesiologist shares this understanding. Herein, we will review the physiological determinants of cerebral blood flow and how delivery of anesthesia impacts these processes.
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Affiliation(s)
- Andrew M Slupe
- Department of Anesthesiology and Perioperative Medicine, Oregon Health and Science University, Portland, OR, USA
| | - Jeffrey R Kirsch
- Department of Anesthesiology and Perioperative Medicine, Oregon Health and Science University, Portland, OR, USA
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11
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Pharmacological Management of Severe Neuropathic Pain in a Case of Eosinophilic Meningitis Related to Angiostrongylus cantonensis. Case Rep Anesthesiol 2018; 2018:5038272. [PMID: 30416830 PMCID: PMC6207877 DOI: 10.1155/2018/5038272] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/25/2018] [Revised: 09/06/2018] [Accepted: 09/27/2018] [Indexed: 11/17/2022] Open
Abstract
Angiostrongylus cantonensis, the rat lungworm, is the most common infectious cause of eosinophilic meningitis and can be fatal. The parasite can be found throughout Southeast Asia and Pacific Islands and the global distribution is expanding. We present the case of a fourteen-year-old female who had previously traveled to Hawaii and developed severe neuropathic pain related to A. cantonensis infection refractory to gabapentin and pregabalin monotherapy, who was eventually managed with an ultralow dose ketamine infusion, methadone, and serotonin-norepinephrine reuptake inhibitor.
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12
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Affiliation(s)
- John B Dillon
- Department of Anesthesiology, University of California School of Medicine, Los Angeles, California 90024
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Benken ST, Goncharenko A. The Future of Intensive Care Unit Sedation: A Report of Continuous Infusion Ketamine as an Alternative Sedative Agent. J Pharm Pract 2016; 30:576-581. [PMID: 27139887 DOI: 10.1177/0897190016646293] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
Abstract
This report describes a patient case utilizing a nontraditional sedative, continuous infusion ketamine, as an alternative agent for intensive care unit (ICU) sedation. A 27-year-old female presented for neurosurgical management of a coup contrecoup injury, left temporal fracture, epidural hemorrhage (EDH), and temporal contusion leading to sustained mechanical ventilation. The patient experienced profound agitation during mechanical ventilation and developed adverse effects with all traditional sedatives: benzodiazepines, dexmedetomidine, opioids, and propofol. Ketamine was titrated to effect and eliminated the need for other agents. This led to successful ventilator weaning, extubation, and transition of care. Given the unique side effect profile of ketamine, it is imperative that information is disseminated on potential utilization of this agent. More information is needed regarding dosing, monitoring, and long-term effects of utilizing ketamine as a continuous ICU sedative, but given the analgesia, anesthesia, and cardiopulmonary stability, future utilization of this medication for this indication seems promising.
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Affiliation(s)
- Scott T Benken
- 1 Department of Pharmacy Practice, University of Illinois Hospital and Health Sciences System and University of Illinois at Chicago College of Pharmacy, Chicago, IL, USA
| | - Alexandra Goncharenko
- 1 Department of Pharmacy Practice, University of Illinois Hospital and Health Sciences System and University of Illinois at Chicago College of Pharmacy, Chicago, IL, USA
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14
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Zeiler FA, Teitelbaum J, West M, Gillman LM. The ketamine effect on intracranial pressure in nontraumatic neurological illness. J Crit Care 2014; 29:1096-106. [DOI: 10.1016/j.jcrc.2014.05.024] [Citation(s) in RCA: 36] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/06/2014] [Revised: 05/22/2014] [Accepted: 05/24/2014] [Indexed: 10/25/2022]
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Green SM, Andolfatto G, Krauss BS. Ketamine and intracranial pressure: no contraindication except hydrocephalus. Ann Emerg Med 2014; 65:52-4. [PMID: 25245275 DOI: 10.1016/j.annemergmed.2014.08.025] [Citation(s) in RCA: 38] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/19/2014] [Revised: 08/19/2014] [Accepted: 08/20/2014] [Indexed: 11/17/2022]
Affiliation(s)
- Steven M Green
- Department of Emergency Medicine, Loma Linda University Medical Center and Children's Hospital, Loma Linda, CA.
| | - Gary Andolfatto
- Emergency Department, Lions Gate Hospital, North Vancouver, British Columbia, Canada
| | - Baruch S Krauss
- Division of Emergency Medicine, Boston Children's Hospital, and the Department of Pediatrics, Harvard Medical School, Boston, MA
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Loflin R, Koyfman A. When used for sedation, does ketamine increase intracranial pressure more than fentanyl or sufentanil? Ann Emerg Med 2014; 65:55-6. [PMID: 25233812 DOI: 10.1016/j.annemergmed.2014.08.017] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/12/2014] [Revised: 08/14/2014] [Accepted: 08/15/2014] [Indexed: 11/18/2022]
Affiliation(s)
- Rob Loflin
- Carilion Clinic-Virginia Tech Carilion Emergency Medicine Residency Program, Carilion Roanoke Memorial Hospital, Roanoke, VA
| | - Alex Koyfman
- Department of Emergency Medicine, UT Southwestern Medical Center/Parkland Memorial Hospital, Dallas, TX
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Ketamine does not increase intracranial pressure compared with opioids: meta-analysis of randomized controlled trials. J Anesth 2014; 28:821-7. [PMID: 24859931 DOI: 10.1007/s00540-014-1845-3] [Citation(s) in RCA: 28] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/19/2014] [Accepted: 05/02/2014] [Indexed: 10/25/2022]
Abstract
BACKGROUND Ketamine is traditionally avoided in sedation management of patients with risk of intracranial hypertension. However, results from many clinical trials contradict this concern. We critically analyzed the published data of the effects of ketamine on intracranial pressure (ICP) and other cerebral hemodynamics to determine whether ketamine was safe for patients with hemodynamic instability and brain injuries. METHODS We systematically searched the online databases of PubMed, Medline, Embase, Current Controlled Trials, and Cochrane Central (last search performed on January 15, 2014). Trial characteristics and outcomes were independently extracted by two assessors (Xin Wang, Xibing Ding). For continuous data, mean differences (MD) were formulated. If the P value of the chi-square test was >0.10 or I(2) <50%, a fixed-effects model was used; otherwise, the random effects model was adopted. RESULTS Five trials (n = 198) met the inclusion criteria. Using ICP levels within the first 24 h of ketamine administration as the main outcome, the use of ketamine leads to the same ICP levels as opioids [MD = 1.94; 95% confidence interval (95% CI), -2.35, 6.23; P = 0.38]. There were no significant differences in mean arterial pressure values between the two groups (MD = 0.99; 95% CI, -2.24, 4.22; P = 0.55). Ketamine administration was also comparable with opioids in the maintenance of cerebral perfusion pressure (MD = -1.07; 95% CI, -7.95, 5.8; P = 0.76). CONCLUSIONS The results of this study suggest that ketamine does not increase ICP compared with opioids. Ketamine provides good maintenance of hemodynamic status. Clinical application of ketamine should not be discouraged on the basis of ICP-related concerns.
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A standardized rapid sequence intubation protocol facilitates airway management in critically injured patients. J Trauma Acute Care Surg 2013. [PMID: 23188232 DOI: 10.1097/ta.0b013e318270dcf5] [Citation(s) in RCA: 26] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
Abstract
BACKGROUND In the emergency department (ED) of a teaching hospital, rapid sequence intubation (RSI) is performed by physicians with a wide range of experience. A variety of medications have been used for RSI, with potential for inadequate or excessive dosing as well as complications including hypotension and the need for redosing. We hypothesized that the use of a standardized RSI medication protocol has facilitated endotracheal intubation requiring less medication redosing and less medication-related hypotension. METHODS An RSI medication protocol (ketamine 2 mg/kg intravenously administered and rocuronium 1 mg/kg intravenously administered, or succinylcholine 1.5 mg/kg intravenously administered) was implemented for all trauma patients undergoing ED intubation at a Level I trauma center. We retrospectively reviewed patients for the 1-year period before (PRE) and after (KET) the protocol was instituted. Data collected included age, sex, Injury Severity Score (ISS), Abbreviated Injury Scale (AIS) score of the head/face, AIS score of the chest, RSI drugs, need for redosing, time to intubation, indication for RSI, and number of RSI attempts. RESULTS During the study period, 439 patients met inclusion criteria; 266 without protocol (PRE) and 173 with protocol (KET). Patients were severely injured with a mean ISS of 24 and median AIS score of the head/face of 3. Dosing in the KET group was appropriate with a mean dose of 1.9-mg/kg ketamine administered. Compliance after KET introduction approached 90%. Fifteen patients in the PRE group required redosing of medication versus three in the KET group (p < 0.05, χ). For patients younger than 14 years, (26 in PRE and 10 in KET), 2 patients in the PRE group required redosing and none in the KET group (not significant). In all patients, mean time from drug administration to intubation decreased from 4 minutes to 3 minutes. CONCLUSION A standardized medication protocol simplifies RSI and allows efficient airway management of critically injured trauma patients in the ED of a teaching hospital. Incorporation of ketamine avoids potential complications of other commonly used RSI medications. LEVEL OF EVIDENCE Therapeutic study, level IV.
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Flower O, Hellings S. Sedation in traumatic brain injury. Emerg Med Int 2012; 2012:637171. [PMID: 23050154 PMCID: PMC3461283 DOI: 10.1155/2012/637171] [Citation(s) in RCA: 66] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/08/2012] [Revised: 05/16/2012] [Accepted: 06/22/2012] [Indexed: 02/08/2023] Open
Abstract
Several different classes of sedative agents are used in the management of patients with traumatic brain injury (TBI). These agents are used at induction of anaesthesia, to maintain sedation, to reduce elevated intracranial pressure, to terminate seizure activity and facilitate ventilation. The intent of their use is to prevent secondary brain injury by facilitating and optimising ventilation, reducing cerebral metabolic rate and reducing intracranial pressure. There is limited evidence available as to the best choice of sedative agents in TBI, with each agent having specific advantages and disadvantages. This review discusses these agents and offers evidence-based guidance as to the appropriate context in which each agent may be used. Propofol, benzodiazepines, narcotics, barbiturates, etomidate, ketamine, and dexmedetomidine are reviewed and compared.
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Affiliation(s)
- Oliver Flower
- University of Sydney, Sydney, NSW, Australia
- Department of Intensive Care, Royal North Shore Hospital, Sydney, NSW 2065, Australia
| | - Simon Hellings
- Department of Intensive Care, Royal North Shore Hospital, Sydney, NSW 2065, Australia
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Green SM, Roback MG, Kennedy RM, Krauss B. Clinical Practice Guideline for Emergency Department Ketamine Dissociative Sedation: 2011 Update. Ann Emerg Med 2011; 57:449-61. [DOI: 10.1016/j.annemergmed.2010.11.030] [Citation(s) in RCA: 276] [Impact Index Per Article: 21.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/20/2010] [Revised: 11/17/2010] [Accepted: 11/22/2010] [Indexed: 10/18/2022]
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Bar-Joseph G, Guilburd Y, Tamir A, Guilburd JN. Effectiveness of ketamine in decreasing intracranial pressure in children with intracranial hypertension. J Neurosurg Pediatr 2009; 4:40-6. [PMID: 19569909 DOI: 10.3171/2009.1.peds08319] [Citation(s) in RCA: 151] [Impact Index Per Article: 10.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
Abstract
OBJECT Deepening sedation is often needed in patients with intracranial hypertension. All widely used sedative and anesthetic agents (opioids, benzodiazepines, propofol, and barbiturates) decrease blood pressure and may therefore decrease cerebral perfusion pressure (CPP). Ketamine is a potent, safe, rapid-onset anesthetic agent that does not decrease blood pressure. However, ketamine's use in patients with traumatic brain injury and intracranial hypertension is precluded because it is widely stated that it increases intracranial pressure (ICP). Based on anecdotal clinical experience, the authors hypothesized that ketamine does not increase-but may rather decrease-ICP. METHODS The authors conducted a prospective, controlled, clinical trial of data obtained in a pediatric intensive care unit of a regional trauma center. All patients were sedated and mechanically ventilated prior to inclusion in the study. Children with sustained, elevated ICP (> 18 mm Hg) resistant to first-tier therapies received a single ketamine dose (1-1.5 mg/kg) either to prevent further ICP increase during a potentially distressing intervention (Group 1) or as an additional measure to lower ICP (Group 2). Hemodynamic, ICP, and CPP values were recorded before ketamine administration, and repeated-measures analysis of variance was used to compare these values with those recorded every minute for 10 minutes following ketamine administration. RESULTS The results of 82 ketamine administrations in 30 patients were analyzed. Overall, following ketamine administration, ICP decreased by 30% (from 25.8 +/- 8.4 to 18.0 +/- 8.5 mm Hg) (p < 0.001) and CPP increased from 54.4 +/- 11.7 to 58.3 +/- 13.4 mm Hg (p < 0.005). In Group 1, ICP decreased significantly following ketamine administration and increased by > 2 mm Hg during the distressing intervention in only 1 of 17 events. In Group 2, when ketamine was administered to lower persistent intracranial hypertension, ICP decreased by 33% (from 26.0 +/- 9.1 to 17.5 +/- 9.1 mm Hg) (p < 0.0001) following ketamine administration. CONCLUSIONS In ventilation-treated patients with intracranial hypertension, ketamine effectively decreased ICP and prevented untoward ICP elevations during potentially distressing interventions, without lowering blood pressure and CPP. These results refute the notion that ketamine increases ICP. Ketamine is a safe and effective drug for patients with traumatic brain injury and intracranial hypertension, and it can possibly be used safely in trauma emergency situations.
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Affiliation(s)
- Gad Bar-Joseph
- Paediatric Critical Care, Meyer Children's Hospital, Rambam Medical Center, Haifa, Israel.
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Abstract
Ketamine is widely used for anesthesia and analgesia in neonates and children. It provides potent sedation, analgesia, and amnesia, a short duration of action, supporting hemodynamic and respiratory stability. Noncompetitive antagonism of NMDA receptors produces its primary therapeutic effects, but it also alters receptor function at dopaminergic, serotonergic, cholinergic, and opioidergic sites. Recent interest in ketamine stems from its potential to block excitotoxic cell death, although concerns have been raised about anesthetic neurotoxicity in neonatal animal models. The development of ketamine, its clinical profile, toxic effects in the immature brain, and future applications in neonates and children are reviewed in this article.
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Affiliation(s)
- Adnan T Bhutta
- Department of Pediatrics, University of Arkansas for Medical Sciences, Little Rock, AR 72202, USA.
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Green SM, Krauss B. Clinical practice guideline for emergency department ketamine dissociative sedation in children. Ann Emerg Med 2005. [PMID: 15520705 DOI: 10.1016/j.annemergmed.2004.06.006] [Citation(s) in RCA: 122] [Impact Index Per Article: 6.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/06/2023]
Abstract
We present an evidence-based clinical practice guideline for the administration of the dissociative agent ketamine for emergency department pediatric procedural sedation and analgesia. Substantial research in recent years has necessitated updates and revisions to the widely disseminated 1990 recommendations. We critically discuss indications, contraindications, personnel requirements, monitoring, dosing, coadministered medications, recovery issues, and future research questions for dissociative sedation.
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Affiliation(s)
- Steven M Green
- Department of Emergency Medicine, Loma Linda University Medical Center and Children's Hospital, Loma Linda, CA 92354, USA.
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Ridenour TR, Warner DS, Todd MM, Baker MT. Effects of ketamine on outcome from temporary middle cerebral artery occlusion in the spontaneously hypertensive rat. Brain Res 1991; 565:116-22. [PMID: 1773349 DOI: 10.1016/0006-8993(91)91742-j] [Citation(s) in RCA: 29] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/28/2022]
Abstract
This experiment evaluated the potential for ketamine HCl, a non-competitive glutamate antagonist, to minimize injury resulting from temporary focal cerebral ischemia. Male spontaneously hypertensive rats were randomly assigned to receive either ketamine (n = 13) or halothane anesthesia (n = 12) during 2 h of reversible middle cerebral artery occlusion (MCAO). Ketamine was administered as a 50 mg/kg i.v. loading dose followed by a continuous 1.25 mg/kg/min i.v. infusion beginning 25 min prior to ischemia and continued until 30 min after reperfusion. An additional group of rats (ketamine-shams, n = 8) underwent craniectomy and ketamine administration (as above) but the middle cerebral artery was not ligated. Physiologic values were similar between groups with the exception of plasma glucose which was elevated in the halothane-MCAO group. After 4 days recovery, rats in all groups were neurologically evaluated. There were no differences between the two groups undergoing MCAO for neurologic grading or open field behavior, although both groups performed worse than did ketamine-shams (P less than 0.05). In contrast, motor performance revealed more severe deficits in the ketamine-MCAO rats vs either the halothane-MCAO or ketamine-sham groups (P less than 0.05). Cerebral infarct volume was then planimetrically measured after triphenyl tetrazolium chloride (TTC) staining of fresh brain sections. Mean +/- S.D. infarct volume was not different between the halothane-MCAO (134 +/- 51 mm3) and ketamine-MCAO (131 +/- 64 mm3) groups. Seven of 8 sham rats were free of TTC demarcated injury and in the remaining rat injury was minimal.(ABSTRACT TRUNCATED AT 250 WORDS)
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Affiliation(s)
- T R Ridenour
- Department of Surgery, University of Iowa, Iowa City 52242
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Abstract
Ketamine produces rapid and consistent pediatric sedation with a predictable onset and recovery time. A wide margin of safety is afforded without the respiratory and cardiovascular depression commonly seen with alternative agents. The efficacy of ketamine is well established in anesthesia and dentistry and has extensive applications in other specialties. Ketamine sedation facilitates superior technical and cosmetic results while minimizing emotional trauma to distraught children. The much-feared complications of aspiration and laryngospasm are extremely rare when ketamine is used with proper precautions. Ketamine deserves increased use in the ED, and we advocate additional clinical investigation in this setting.
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Affiliation(s)
- S M Green
- Department of Emergency Medicine, Riverside General Hospital, California 92503
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Kaul HL, Bhaskaran K, Saxena N, Mitra DK. Alterations in intracranial pressure following ketamine anesthesia in hydrocephalic children. Indian J Pediatr 1984; 51:25-8. [PMID: 6746071 DOI: 10.1007/bf02753521] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 01/21/2023]
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Belopavlovic M, Buchthal A. Modification of ketamine-induced intracranial hypertension in neurosurgical patients by pretreatment with midazolam. Acta Anaesthesiol Scand 1982; 26:458-62. [PMID: 6128856 DOI: 10.1111/j.1399-6576.1982.tb01799.x] [Citation(s) in RCA: 30] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/18/2023]
Abstract
The effect on intracranial pressure (ICP) of ketamine as an anaesthetic induction agent following pretreatment with either midazolam (ten cases) or diazepam (five cases) was investigated in unpremedicated neurosurgical patients. In all patients in the midazolam group, ICP increased following ketamine while the cerebral perfusion pressure (CPP) fell in five cases. ICP rose further after intubation by a mean of 21 mmHg (2.8 kPa) with a further drop in CPP in two cases. The changes were usually terminated after pethidine was given but were allowed to continue for 10 min or more in two cases. There was little increase in ICP after the diazepam-ketamine combination, while the CPP fell in one case and increased markedly in two cases. The mean increase in ICP following intubation was 6 mmHg (0.8 kPa) above control values. All patients required assisted ventilation after either benzodiazepine-ketamine combination. It is concluded that midazolam much more effectively suppresses the cardiostimulatory action of ketamine than the increase in ICP and that neither a midazolam-ketamine nor a diazepam-ketamine combination should be considered safe for use in patients who may have reduced intracranial compliance.
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Kaul HL, Jayalaxmi T, Gode GR, Mitra DK. Effect of ketamine on intracranial pressure in hydrocephalic children. Anaesthesia 1976; 31:698-701. [PMID: 779521 DOI: 10.1111/j.1365-2044.1976.tb11853.x] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/24/2022]
Abstract
Intracranial pressure changes were observed in 10 children with hydrocephalus after ketamine administration. Three patients showed an elevation of pressure and a fall was observed in 7 patients. Two more patients who were given ketamine while under general anaesthesia and IPPV also showed a fall in pressure. No explanation is forthcoming at present for such an unusual response, but an altered cerebral vascular response in the presence of promethazine and general anaesthesia has been postulated.
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