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Begley SL, McBriar JD, Pelcher I, Schulder M. Intraoperative MRI: A Review of Applications Across Neurosurgical Specialties. Neurosurgery 2024; 95:527-536. [PMID: 38530004 DOI: 10.1227/neu.0000000000002933] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/25/2023] [Accepted: 01/30/2024] [Indexed: 03/27/2024] Open
Abstract
Intraoperative MRI (iMRI) made its debut to great fanfare in the mid-1990s. However, the enthusiasm for this technology with seemingly obvious benefits for neurosurgeons has waned. We review the benefits and utility of iMRI across the field of neurosurgery and present an overview of the evidence for iMRI for multiple neurosurgical disciplines: tumor, skull base, vascular, pediatric, functional, and spine. Publications on iMRI have steadily increased since 1996, plateauing with approximately 52 publications per year since 2011. Tumor surgery, especially glioma surgery, has the most evidence for the use of iMRI contributing more than 50% of all iMRI publications, with increased rates of gross total resection in both adults and children, providing a potential survival benefit. Across multiple neurosurgical disciplines, the ability to use a multitude of unique sequences (diffusion tract imaging, diffusion-weighted imaging, magnetic resonance angiography, blood oxygenation level-dependent) allows for specialization of imaging for various types of surgery. Generally, iMRI allows for consideration of anatomic changes and real-time feedback on surgical outcomes such as extent of resection and instrument (screw, lead, electrode) placement. However, implementation of iMRI is limited by cost and feasibility, including the need for installation, shielding, and compatible tools. Evidence for iMRI use varies greatly by specialty, with the most evidence for tumor, vascular, and pediatric neurosurgery. The benefits of real-time anatomic imaging, a lack of radiation, and evaluation of surgical outcomes are limited by the cost and difficulty of iMRI integration. Nonetheless, the ability to ensure patients are provided by a maximal yet safe treatment that specifically accounts for their own anatomy and highlights why iMRI is a valuable and underutilized tool across multiple neurosurgical subspecialties.
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Affiliation(s)
- Sabrina L Begley
- Department of Neurosurgery, Brain Tumor Center, Lake Success , New York , USA
- Donald and Barbara Zucker School of Medicine at Hofstra/Northwell, Hempstead , New York , USA
| | - Joshua D McBriar
- Department of Neurosurgery, Brain Tumor Center, Lake Success , New York , USA
- Donald and Barbara Zucker School of Medicine at Hofstra/Northwell, Hempstead , New York , USA
| | - Isabelle Pelcher
- Department of Neurosurgery, Brain Tumor Center, Lake Success , New York , USA
- Donald and Barbara Zucker School of Medicine at Hofstra/Northwell, Hempstead , New York , USA
| | - Michael Schulder
- Department of Neurosurgery, Brain Tumor Center, Lake Success , New York , USA
- Donald and Barbara Zucker School of Medicine at Hofstra/Northwell, Hempstead , New York , USA
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Menezes DR, de Lima L, Mansilla R, Conci A, Rueda F, Velarde LGC, Landeiro JA, Acioly MA. A prospective study on the usefulness of high-resolution intraoperative infrared thermography in intracranial tumors. Front Surg 2024; 11:1386722. [PMID: 38933651 PMCID: PMC11199714 DOI: 10.3389/fsurg.2024.1386722] [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: 02/15/2024] [Accepted: 04/30/2024] [Indexed: 06/28/2024] Open
Abstract
Introduction Infrared thermography (IT) is a non-invasive real-time imaging technique with potential application in different areas of neurosurgery. Despite technological advances in the field, intraoperative IT (IIT) has been an underestimated tool with scarce reports on its usefulness during intracranial tumor resection. We aimed to evaluate the usefulness of high-resolution IIT with static and dynamic thermographic maps for transdural lesion localization, and diagnosis, to assess the extent of resection, and the occurrence of perioperative acute ischemia. Methods In a prospective study, 15 patients affected by intracranial tumors (six gliomas, four meningiomas, and five brain metastases) were examined with a high-resolution thermographic camera after craniotomy, after dural opening, and at the end of tumor resection. Results Tumors were transdurally located with 93.3% sensitivity and 100% specificity (p < 0.00001), as well as cortical arteries and veins. Gliomas were consistently hypothermic, while metastases and meningiomas exhibited highly variable thermographic maps on static (p = 0.055) and dynamic (p = 0.015) imaging. Residual tumors revealed non-specific static but characteristic dynamic thermographic maps. Ischemic injuries were significantly hypothermic (p < 0.001). Conclusions High-resolution IIT is a non-invasive alternative intraoperative imaging method for lesion localization, diagnosis, assessing the extent of tumor resection, and identifying acute ischemia changes with static and dynamic thermographic maps.
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Affiliation(s)
- Diego Rodrigues Menezes
- Division of Neurosurgery, Fluminense Federal University, Rio de Janeiro, Brazil
- Postgraduation Program in Neurology, Federal University of the State of Rio de Janeiro (UNIRIO), Rio de Janeiro, Brazil
| | - Lázaro de Lima
- Division of Neurosurgery, Fluminense Federal University, Rio de Janeiro, Brazil
| | - Raíssa Mansilla
- Division of Neurosurgery, Fluminense Federal University, Rio de Janeiro, Brazil
| | - Aura Conci
- Department of Computer Science, Fluminense Federal University, Rio de Janeiro, Brazil
| | - Fernanda Rueda
- Division of Radiology, Fluminense Federal University, Rio de Janeiro, Brazil
| | | | | | - Marcus André Acioly
- Division of Neurosurgery, Fluminense Federal University, Rio de Janeiro, Brazil
- Postgraduation Program in Neurology, Federal University of the State of Rio de Janeiro (UNIRIO), Rio de Janeiro, Brazil
- Division of Neurosurgery, Federal University of Rio de Janeiro (UFRJ), Rio de Janeiro, Brazil
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Limpo H, Díez R, Albisua J, Tejada S. Intraoperative high-field resonance: How to optimize its use in our healthcare system. ACTA ACUST UNITED AC 2021; 33:261-268. [PMID: 34625382 DOI: 10.1016/j.neucie.2021.05.001] [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] [Received: 12/08/2020] [Accepted: 05/18/2021] [Indexed: 01/21/2023]
Abstract
BACKGROUND AND AIMS Intraoperative MRI (ioMRI) consists of performing a MRI during brain or spinal surgery. Although it is a safe and useful technique, it is available in a few hospitals. This means some aspects are not perfectly defined or standardized, forcing each center to develop its own solutions. Our goal is to describe the technique, evaluate the changes made to optimize its use and thus be able to facilitate the intraoperative resonance implementation in other neurosurgery departments. METHODS A prospective analysis of patients consecutively operated using high-field ioMRI guidance was carried out, describing the type of tumor, clinical data, time and sequences of ioMR, use of intraoperative neurophysiology, preoperative tumor volume, after ioMR, and postoperative, as well as complications. RESULTS ioMR was performed in 38 patients selected from among 425 brain tumors (9%) operated on in this interval. The tumor types were: 11 glioblastomas, 8 anaplastic astrocytomas, 5 diffuse astrocytomas, 4 meningiomas, 3 oligodendrogliomas, 2 metastases, 2 epidermoid cysts, 1 astroblastoma, 1 arachnoid cyst and 1 pituitary adenoma. The mean age was 45 years. The mean preoperative tumor volume was 45.22cc, after the ioMR 5.08cc and postoperative 1.28cc. Resection was extended after ioMR in 76%. Gross total resection was achieved in 15 patients and residual tumor of less than 1cc was observed in 8. An intentional tumor tissue was left in an eloquent brain region (mean volume 7cc) in 13 patients. Bleeding and ischemia complications were detected early on ioMR in 5%. MRI length was 47 min on average. CONCLUSIONS Intraoperative MRI was a useful and safe technique, and no associated complications were registered.
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Affiliation(s)
- Hiria Limpo
- Departamento de Neurocirugía, Hospital Universitario Fundación Jiménez Díaz, Madrid, Spain.
| | - Ricardo Díez
- Departamento de Neurocirugía, Hospital Universitario Fundación Jiménez Díaz, Madrid, Spain
| | - Julio Albisua
- Departamento de Neurocirugía, Hospital Universitario Fundación Jiménez Díaz, Madrid, Spain
| | - Sonia Tejada
- Departamento de Neurocirugía, Hospital Universitario Fundación Jiménez Díaz, Madrid, Spain
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Resonancia intraoperatoria de alto campo: cómo optimizar su uso en nuestro modelo sanitario. Neurocirugia (Astur) 2021. [DOI: 10.1016/j.neucir.2021.05.003] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
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Laochamroonvorapongse D, Theard MA, Yahanda AT, Chicoine MR. Intraoperative MRI for Adult and Pediatric Neurosurgery. Anesthesiol Clin 2021; 39:211-225. [PMID: 33563383 DOI: 10.1016/j.anclin.2020.11.010] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/10/2023]
Abstract
Intraoperative MRI (iMRI) technology and its use in both adult and pediatric neurosurgery have advanced significantly over the past 2 decades, allowing neurosurgeons to account for brain shift and optimize resection of brain lesions. Combining the risks of the MR environment with those of the operating room creates a challenging, zero-tolerance environment for the anesthesiologist. This article provides an overview of the currently available iMRI systems, the neurosurgical evidence supporting iMRI use, and the anesthetic and safety considerations for iMRI procedures.
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Affiliation(s)
- Dean Laochamroonvorapongse
- Department of Anesthesiology and Perioperative Medicine, Oregon Health and Science University, 3181 Southwest Sam Jackson Park Road, Mail Code-UH2, Portland, OR 97239, USA.
| | - Marie A Theard
- Department of Anesthesiology and Perioperative Medicine, Oregon Health and Science University, 3181 Southwest Sam Jackson Park Road, Mail Code-UH2, Portland, OR 97239, USA
| | - Alexander T Yahanda
- Department of Neurosurgery, Washington University School of Medicine, 660 South Euclid Avenue, St Louis, MO 63110, USA
| | - Michael R Chicoine
- Department of Neurosurgery, Washington University School of Medicine, 660 South Euclid Avenue, St Louis, MO 63110, USA
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Sotardi ST, Degnan AJ, Liu CA, Mecca PL, Serai SD, Smock RD, Victoria T, White AM. Establishing a magnetic resonance safety program. Pediatr Radiol 2021; 51:709-715. [PMID: 33871724 PMCID: PMC8054505 DOI: 10.1007/s00247-020-04910-y] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/01/2020] [Revised: 09/03/2020] [Accepted: 11/09/2020] [Indexed: 11/24/2022]
Abstract
Establishing a magnetic resonance (MR) safety program is crucial to ensuring the safe MR imaging of pediatric patients. The organizational structure includes a core safety council and broader safety committee comprising all key stakeholders. These groups work in synchrony to establish a strong culture of safety; create and maintain policies and procedures; implement device regulations for entry into the MR setting; construct MR safety zones; address intraoperative MR concerns; guarantee safe scanning parameters, including complying with specific absorption rate limitations; adhere to national regulatory body guidelines; and ensure appropriate communication among all parties in the MR environment. Perspectives on the duties of the safety council members provide important insight into the organization of program oversite. Ultimately, the collective dedication and vigilance of all MR staff are crucial to the success of a safety program.
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Affiliation(s)
- Susan T. Sotardi
- Department of Radiology, Children’s Hospital of Philadelphia, 3401 Civic Center Blvd., Philadelphia, PA 19104 USA
| | - Andrew J. Degnan
- Department of Radiology, Children’s Hospital of Philadelphia, 3401 Civic Center Blvd., Philadelphia, PA 19104 USA
| | - Chang Amber Liu
- Department of Anesthesiology, Massachusetts General Hospital, Boston, MA USA
| | - Patricia L. Mecca
- Department of Radiology, Children’s Hospital of Philadelphia, 3401 Civic Center Blvd., Philadelphia, PA 19104 USA
| | - Suraj D. Serai
- Department of Radiology, Children’s Hospital of Philadelphia, 3401 Civic Center Blvd., Philadelphia, PA 19104 USA
| | - R. Daniel Smock
- Department of Radiology, Children’s Mercy Hospital, Kansas City, MO USA
| | - Teresa Victoria
- Department of Radiology, Children’s Hospital of Philadelphia, 3401 Civic Center Blvd., Philadelphia, PA 19104 USA
| | - Ammie M. White
- Department of Radiology, Children’s Hospital of Philadelphia, 3401 Civic Center Blvd., Philadelphia, PA 19104 USA
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MR Imaging Safety in the Interventional Environment. Magn Reson Imaging Clin N Am 2020; 28:583-591. [PMID: 33040998 DOI: 10.1016/j.mric.2020.07.007] [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: 11/23/2022]
Abstract
Interventional MR imaging procedures are rapidly growing in number owing to the excellent soft tissue resolution of MR imaging, lack of ionizing radiation, hardware and software advancements, and technical developments in MR imaging-compatible robots, lasers, and ultrasound equipment. The safe operation of an interventional MR imaging system is a complex undertaking, which is only possible with multidisciplinary planning, training, operations and oversight. Safety for both patients and operators is essential for successful operations. Herein, we review the safety concerns, solutions and challenges associated with the operation of a modern interventional MR imaging system.
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Greenberg TD, Hoff MN, Gilk TB, Jackson EF, Kanal E, McKinney AM, Och JG, Pedrosa I, Rampulla TL, Reeder SB, Rogg JM, Shellock FG, Watson RE, Weinreb JC, Hernandez D. ACR guidance document on MR safe practices: Updates and critical information 2019. J Magn Reson Imaging 2019; 51:331-338. [PMID: 31355502 DOI: 10.1002/jmri.26880] [Citation(s) in RCA: 41] [Impact Index Per Article: 8.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/19/2019] [Accepted: 07/11/2019] [Indexed: 12/11/2022] Open
Abstract
The need for a guidance document on MR safe practices arose from a growing awareness of the MR environment's potential risks and adverse event reports involving patients, equipment, and personnel. Initially published in 2002, the American College of Radiology White Paper on MR Safety established de facto industry standards for safe and responsible practices in clinical and research MR environments. The most recent version addresses new sources of risk of adverse events, increases awareness of dynamic MR environments, and recommends that those responsible for MR medical director safety undergo annual MR safety training. With regular updates to these guidelines, the latest MR safety concerns can be accounted for to ensure a safer MR environment where dangers are minimized. Level of Evidence: 1 Technical Efficacy Stage: 5 J. Magn. Reson. Imaging 2020;51:331-338.
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Affiliation(s)
| | | | - Michael N Hoff
- Department of Radiology, University of Washington, Seattle, Washington, USA
| | | | - Edward F Jackson
- Departments of Medical Physics, Radiology, and Human Oncology, University of Wisconsin School of Medicine and Public Heath, Madison, Wisconsin, USA
| | - Emanuel Kanal
- Department of Radiology, University of Pittsburgh Medical Center, Pittsburgh, Pennsylvania, USA
| | - Alexander M McKinney
- Department of Radiology, University of Minnesota Medical Center, Minneapolis, Minnesota, USA
| | - Joseph G Och
- Department of Medical & Health Physics, Geisinger, Danville, Pennsylvania, USA
| | - Ivan Pedrosa
- Department of Radiology, University of Texas Southwestern Medical Center, Dallas, Texas, USA
| | | | - Scott B Reeder
- Departments of Radiology, Medical Physics, Biomedical Engineering, Medicine, and Emergency Medicine, University of Wisconsin, Madison, Wisconsin, USA
| | - Jeffrey M Rogg
- Department of Diagnostic Imaging, Rhode Island Hospital, Alpert Medical School of Brown University, Providence, Rhode Island, USA
| | - Frank G Shellock
- Keck School of Medicine, University of Southern California, Los Angeles, California, USA
| | - Robert E Watson
- Department of Radiology, Mayo Clinic, Rochester, Minnesota, USA
| | - Jeffrey C Weinreb
- Department of Radiology and Biomedical Imaging, Yale School of Medicine, New Haven, Connecticut, USA
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Schroeck H, Welch TL, Rovner MS, Johnson HA, Schroeck FR. Anesthetic challenges and outcomes for procedures in the intraoperative magnetic resonance imaging suite: A systematic review. J Clin Anesth 2018; 54:89-101. [PMID: 30415150 DOI: 10.1016/j.jclinane.2018.10.022] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/22/2018] [Revised: 09/28/2018] [Accepted: 10/28/2018] [Indexed: 01/25/2023]
Abstract
BACKGROUND AND OBJECTIVE Hybrid operating room suites with intraoperative magnetic resonance imaging enable image guided surgery in a fully functional operating room environment. While this environment creates challenges to anesthetic care, the effects on anesthetic adverse events and outcomes are largely unknown. This systematic scoping review aims to map the existing knowledge about anesthetic care in advanced imaging hybrid operating rooms. METHODS A broad-based literature search was performed using the PubMed (Medline), Embase, Cochrane Library, Web of Science, and Google Scholar databases. References published in English between January 1994 and August 2017 were included. Quality of evidence was assessed using the GRADE guidelines. RESULTS Forty-seven manuscripts were eligible for data collection. Adverse events were heterogeneously defined across 17 manuscripts and occurred in 0 to 100% (quality of evidence mostly very low). Monitoring difficulty was reported in 4 manuscripts of very low data quality. Interference between the magnet and the electrocardiogram was investigated in 2 manuscripts (quality of evidence low and very low, respectively). None of the reported events appeared to result in long-term patient harm. Author recommendations or a narrative review of the literature were provided in 40 manuscripts. Common safety concerns included lower equipment reliability, inaccessibility of the patient and airway, and the relative isolation of the suite (in relationship to other anesthesia care areas). Most authors also emphasized the importance of safety checklists, protocols, and provider training. DISCUSSION While intraoperative magnetic resonance imaging hybrid operating rooms are increasingly utilized, the existing literature does not allow estimating adverse event rates in this location. Prospective studies quantifying the effect of the environment on anesthesia outcomes are lacking. Despite this, there is a broad consensus regarding the anesthetic and safety concerns. More research is needed to inform practice standards and training requirements for this challenging environment.
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Affiliation(s)
- Hedwig Schroeck
- Geisel School of Medicine at Dartmouth College, 1 Rope Ferry Road, Hanover, NH 03755, USA; Department of Anesthesiology, Dartmouth-Hitchcock Medical Center, 1 Medical Center Drive, Lebanon, NH 03756, USA.
| | - Tasha L Welch
- Department of Anesthesiology and Perioperative Medicine, Mayo Clinic, 200 First Street SW, Rochester, MN 55905, USA.
| | - Michelle S Rovner
- Department of Anesthesia & Perioperative Medicine, Medical University of South Carolina, 165 Ashley Avenue, Suite 525CH, Charleston, SC 29425, USA.
| | - Heather A Johnson
- Biomedical Libraries, Dartmouth College, 1 Medical Center Drive, Lebanon, NH 03756, USA
| | - Florian R Schroeck
- Geisel School of Medicine at Dartmouth College, 1 Rope Ferry Road, Hanover, NH 03755, USA; White River Junction VA Medical Center, 215 N Main Street, White River Junction, VT 05009, USA; The Dartmouth Institute for Health Policy and Clinical Practice, Geisel School of Medicine at Dartmouth College, USA.
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10
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Abstract
PURPOSE OF REVIEW The use of intraoperative MRI technology during neurosurgery has become increasingly more common over the past several years. These surgical procedures require a specialized operating room designed to accommodate an MRI machine, as well as MRI-compatible anesthesia equipment and monitors. The MRI environment also poses unique risks and challenges to both patients and medical staff. RECENT FINDINGS General anesthesia in the MRI operating room suite poses several challenges not routinely experienced in a conventional operating room suite, and anesthesia providers delivering care in these suites must complete specialized training and screening. The presence of a magnetic field, as well as reduced access to the patient during the MRI scan, require high levels of vigilance. SUMMARY The use of checklists and teamwork training can maximize both patient and provider safety in the intraoperative MRI environment.
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Zhang ZZ, Shields LBE, Sun DA, Zhang YP, Hunt MA, Shields CB. The Art of Intraoperative Glioma Identification. Front Oncol 2015; 5:175. [PMID: 26284196 PMCID: PMC4520021 DOI: 10.3389/fonc.2015.00175] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/21/2015] [Accepted: 07/14/2015] [Indexed: 01/01/2023] Open
Abstract
A major dilemma in brain-tumor surgery is the identification of tumor boundaries to maximize tumor excision and minimize postoperative neurological damage. Gliomas, especially low-grade tumors, and normal brain have a similar color and texture, which poses a challenge to the neurosurgeon. Advances in glioma resection techniques combine the experience of the neurosurgeon and various advanced technologies. Intraoperative methods to delineate gliomas from normal tissue consist of (1) image-based navigation, (2) intraoperative sampling, (3) electrophysiological monitoring, and (4) enhanced visual tumor demarcation. The advantages and disadvantages of each technique are discussed. A combination of these methods is becoming widely accepted in routine glioma surgery. Gross total resection in conjunction with radiation, chemotherapy, or immune/gene therapy may increase the rates of cure in this devastating disease.
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Affiliation(s)
- Zoe Z Zhang
- Department of Neurosurgery, University of Minnesota , Minneapolis, MN , USA
| | - Lisa B E Shields
- Norton Neuroscience Institute, Norton Healthcare , Louisville, KY , USA
| | - David A Sun
- Norton Neuroscience Institute, Norton Healthcare , Louisville, KY , USA
| | - Yi Ping Zhang
- Norton Neuroscience Institute, Norton Healthcare , Louisville, KY , USA
| | - Matthew A Hunt
- Department of Neurosurgery, University of Minnesota , Minneapolis, MN , USA
| | - Christopher B Shields
- Norton Neuroscience Institute, Norton Healthcare , Louisville, KY , USA ; Department of Anatomical Sciences and Neurobiology, University of Louisville School of Medicine , Louisville, KY , USA
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Fisher JD, Freeman K, Clarke A, Spurgeon P, Smyth M, Perkins GD, Sujan MA, Cooke MW. Patient safety in ambulance services: a scoping review. HEALTH SERVICES AND DELIVERY RESEARCH 2015. [DOI: 10.3310/hsdr03210] [Citation(s) in RCA: 21] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022] Open
Abstract
BackgroundThe role of ambulance services has changed dramatically over the last few decades with the introduction of paramedics able to provide life-saving interventions, thanks to sophisticated equipment and treatments available. The number of 999 calls continues to increase, with adverse events theoretically possible with each one. Most patient safety research is based on hospital data, but little is known concerning patient safety when using ambulance services, when things can be very different. There is an urgent need to characterise the evidence base for patient safety in NHS ambulance services.ObjectiveTo identify and map available evidence relating to patient safety when using ambulance services.DesignMixed-methods design including systematic review and review of ambulance service documentation, with areas for future research prioritised using a Delphi process.Setting and participantsAmbulance services, their staff and service users in UK.Data sourcesA wide range of data sources were explored. Multiple databases, reference lists from key papers and citations, Google and the NHS Confederation website were searched, and experts contacted to ensure that new data were included in the review. The databases MEDLINE, EMBASE, Cumulative Index to Nursing and Allied Health Literature (CINAHL), Web of Science, Science Direct, Emerald, Education Resources Information Center (ERIC), Applied Social Sciences Index and Abstracts, Social Services Abstracts, Sociological Abstracts, International Bibliography of the Social Sciences (IBSS), PsycINFO, PsycARTICLES, Health Management Information Consortium (HMIC), NHS Evidence, Cochrane Database of Systematic Reviews, Database of Abstracts of Reviews of Effects (DARE), NHS Economic Evaluation Database (NHS EED),Health Technology Assessment, the FADE library, Current Awareness Service for Health (CASH), OpenDOAR (Directory of Open Access Repositories) and Open System for Information on Grey Literature in Europe (OpenSIGLE) and Zetoc (The British Library's Electronic Table of Contents) were searched from 1 January 1980 to 12 October 2011. Publicly available documents and issues identified by National Patient Safety Agency (NPSA), NHS Litigation Authority (NHSLA) and coroners’ reports were considered. Opinions and perceptions of senior managers, ambulance staff and service users were solicited.Review methodsData were extracted from annual reports using two-stage thematic analysis, data from quality accounts were collated with safety priorities tabulated and considered using thematic analysis, NPSA incident report data were collated and displayed comparatively using descriptive statistics, claims reported to NHSLA were analysed to identify number and cost of claims from mistakes and/or poor service, and summaries of coroners’ reports were assessed using thematic analysis to identify underlying safety issues. The depth of analysis is limited by the remit of a scoping exercise and availability of data.ResultsWe identified studies exploring different aspects of safety, which were of variable quality and with little evidence to support activities currently undertaken by ambulance services. Adequately powered studies are required to address issues of patient safety in this service, and it appeared that national priorities were what determined safety activities, rather than patient need. There was inconsistency of information on attitudes and approaches to patient safety, exacerbated by a lack of common terminology.ConclusionPatient safety needs to become a more prominent consideration for ambulance services, rather than operational pressures, including targets and driving the service. Development of new models of working must include adequate training and monitoring of clinical risks. Providers and commissioners need a full understanding of the safety implications of introducing new models of care, particularly to a mobile workforce often isolated from colleagues, which requires a body of supportive evidence and an inherent critical evaluation culture. It is difficult to extrapolate findings of clinical studies undertaken in secondary care to ambulance service practice and current national guidelines often rely on consensus opinion regarding applicability to the pre-hospital environment. Areas requiring further work include the safety surrounding discharging patients, patient accidents, equipment and treatment, delays in transfer/admission to hospital, and treatment and diagnosis, with a clear need for increased reliability and training for improving handover to hospital.FundingThe National Institute for Health Research Health Services and Delivery Research programme.
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Affiliation(s)
- Joanne D Fisher
- Department of Health Sciences, Warwick Medical School, Coventry, UK
| | - Karoline Freeman
- Department of Health Sciences, Warwick Medical School, Coventry, UK
| | - Aileen Clarke
- Department of Health Sciences, Warwick Medical School, Coventry, UK
| | - Peter Spurgeon
- Department of Health Sciences, Warwick Medical School, Coventry, UK
| | - Mike Smyth
- West Midlands Ambulance Service, Millennium Point, Waterfront Business Park, Brierley Hill, West Midlands, UK
| | - Gavin D Perkins
- Department of Health Sciences, Warwick Medical School, Coventry, UK
| | | | - Matthew W Cooke
- Department of Health Sciences, Warwick Medical School, Coventry, UK
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Caputi L, Ghielmetti F, Faragò G, Longaretti F, Lamperti M, Anzola GP, Carriero MR, Charbel FT, Bruzzone MG, Parati E, Ciceri E. Cerebrovascular reactivity by quantitative magnetic resonance angiography with a Co₂ challenge. Validation as a new imaging biomarker. Eur J Radiol 2014; 83:1005-1010. [PMID: 24721002 DOI: 10.1016/j.ejrad.2014.03.001] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/05/2013] [Revised: 03/03/2014] [Accepted: 03/06/2014] [Indexed: 11/16/2022]
Abstract
Assessment of cerebrovascular reactivity (CVR) is essential in cerebrovascular diseases, as exhausted CVR may enhance the risk of cerebral ischemic events. Transcranial Doppler (TCD) with a vasodilatory stimulus is currently used for CVR evaluation. Scanty data are available for Quantitative Magnetic Resonance Angiography (QMRA), which supplies higher spatial resolution and quantitative cerebral blood flow values. Aims of our pilot study were: (a) to assess safety and feasibility of CO2 administration during QMRA, (b) evaluation of CVR under QMRA compared to TCD, and (c) quantitative evaluation of blood flow from the major intracranial arterial vessels both at rest and after CO2. CVR during 5% CO2 air breathing was measured with TCD as a reference method and compared with QMRA. Fifteen healthy subjects (age 60.47 ± 2.24; male 11/15) were evaluated at rest and during CO2 challenge. Feasibility and safety of QMRA under CO2 were ensured in all subjects. CVR from middle cerebral artery territory was not statistically different between TCD and MRI (p>0.05). Mean arterial pressure (MAP) and heart rate (HR) increased during QMRA and TCD (MAP p=0.007 and p=0.001; HR p=0.043 and p=0.068, respectively). Blood flow values from all intracranial vessels increased after CO2 inhalation (p<0.001). CO2 administration during QMRA sessions is safe and feasible. Good correlation in terms of CVR was obtained comparing TCD and QMRA. Blood flow values significantly increased from all intracranial arterial vessels after CO2. Studies regarding CVR in physiopathological conditions might consider the utilization of QMRA both in routine clinical settings and in research projects.
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Affiliation(s)
- Luigi Caputi
- Department of Cerebrovascular Diseases, Fondazione IRCCS Neurological Institute C. Besta, Via Celoria 11, 20133 Milan, Italy.
| | - Francesco Ghielmetti
- Department of Neuroradiology, Fondazione IRCCS Neurological Institute C. Besta, Via Celoria 11, 20133 Milan, Italy.
| | - Giuseppe Faragò
- Department of Neuroradiology, Fondazione IRCCS Neurological Institute C. Besta, Via Celoria 11, 20133 Milan, Italy.
| | - Fabio Longaretti
- Department of Neuroradiology, Fondazione IRCCS Neurological Institute C. Besta, Via Celoria 11, 20133 Milan, Italy.
| | - Massimo Lamperti
- Department of Neuroanesthesia and Intensive Care, Fondazione IRCCS Neurological Institute C. Besta, Via Celoria 11, 20133 Milan, Italy.
| | - Gian Paolo Anzola
- Service of Neurology, S. Orsola Hospital, Fondazione Poliambulanza, Via Vittorio Emanuele II 27, 25122 Brescia, Italy.
| | - Maria Rita Carriero
- Department of Cerebrovascular Diseases, Fondazione IRCCS Neurological Institute C. Besta, Via Celoria 11, 20133 Milan, Italy.
| | - Fady T Charbel
- Department of Neurosurgery, University of Illinois at Chicago College of Medicine, Chicago, IL 60612, USA.
| | - Maria Grazia Bruzzone
- Department of Neuroradiology, Fondazione IRCCS Neurological Institute C. Besta, Via Celoria 11, 20133 Milan, Italy.
| | - Eugenio Parati
- Department of Cerebrovascular Diseases, Fondazione IRCCS Neurological Institute C. Besta, Via Celoria 11, 20133 Milan, Italy.
| | - Elisa Ciceri
- Department of Neuroradiology, Fondazione IRCCS Neurological Institute C. Besta, Via Celoria 11, 20133 Milan, Italy.
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14
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Rahmathulla G, Recinos PF, Traul DE, Avitsian R, Yunak M, Harper NT, Barnett GH, Recinos VR. Surgical briefings, checklists, and the creation of an environment of safety in the neurosurgical intraoperative magnetic resonance imaging suite. Neurosurg Focus 2012; 33:E12. [DOI: 10.3171/2012.9.focus12260] [Citation(s) in RCA: 23] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
Abstract
Technological advances have made it possible to seamlessly integrate modern neuroimaging into the neurosurgical operative environment. This integration has introduced many new applications improving surgical treatments. One major addition to the neurosurgical armamentarium is intraoperative navigation and MRI, enabling real-time use during surgery. In the 1970s, the American College of Radiology issued safety guidelines for diagnostic MRI facilities. Until now, however, no such guidelines existed for the MRI-integrated operating room, which is a high-risk zone requiring standardized protocols to ensure the safety of both the patient and the operating room staff. The forces associated with the strong 1.5- and 3.0-T magnets used for MRI are potent and hazardous, creating distinct concerns regarding safety, infection control, and image interpretation. Authors of this paper provide an overview of the intraoperative MRI operating room, safety considerations, and a series of checklists and protocols for maintaining safety in this zero tolerance environment.
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Affiliation(s)
- Gazanfar Rahmathulla
- 1Rose Ella Burkhardt Brain Tumor and Neuro-Oncology Center
- 2Departments of Neurosurgery and
- 3Neurological Institute
| | - Pablo F. Recinos
- 1Rose Ella Burkhardt Brain Tumor and Neuro-Oncology Center
- 2Departments of Neurosurgery and
- 4Department of Neurosurgery, Johns Hopkins University School of Medicine, Baltimore, Maryland
| | | | | | | | | | - Gene H. Barnett
- 1Rose Ella Burkhardt Brain Tumor and Neuro-Oncology Center
- 2Departments of Neurosurgery and
- 3Neurological Institute
| | - Violette Renard Recinos
- 1Rose Ella Burkhardt Brain Tumor and Neuro-Oncology Center
- 2Departments of Neurosurgery and
- 3Neurological Institute
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