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1.
Appl Ergon ; 113: 104105, 2023 Nov.
Artigo em Inglês | MEDLINE | ID: mdl-37541103

RESUMO

Designing health IT aimed at supporting team-based care and improving patient safety is difficult. This requires a work system (i.e., SEIPS) evaluation of the technology by care team members. This study aimed to identify work system barriers and facilitators to the use of a team health IT that supports care transitions for pediatric trauma patients. We conducted an analysis on 36 interviews - representing 12 roles - collected from a scenario-based evaluation of T3. We identified eight dimensions with both barriers and facilitators in all five work system elements: person (experience), task (task performance, workload/efficiency), technology (usability, specific features of T3), environment (space, location), and organization (communication/coordination). Designing technology that meets every role's needs is challenging; in particular, when trade-offs need to be managed, e.g., additional workload for one role or divergent perspectives regarding specific features. Our results confirm the usefulness of a continuous work system approach to technology design and implementation.


Assuntos
Comunicação , Informática Médica , Humanos , Criança , Segurança do Paciente , Análise e Desempenho de Tarefas , Tecnologia
2.
Appl Ergon ; 106: 103846, 2023 Jan.
Artigo em Inglês | MEDLINE | ID: mdl-35985249

RESUMO

We need to design technologies that support the work of health care teams; designing such solutions should integrate different clinical roles. However, we know little about the actual collaboration that occurs in the design process for a team-based care solution. This study examines how multiple perspectives were managed in the design of a team health IT solution aimed at supporting clinician information needs during pediatric trauma care transitions. We focused our analysis on four co-design sessions that involved multiple clinicians caring for pediatric trauma patients. We analyzed design session transcripts using content analysis and process coding guided by Détienne's (2006) co-design framework. We expanded upon Détienne (2006) three collaborative activities to identify specific themes and processes of collaboration between care team members engaged in the design process. The themes and processes describe how team members collaborated in a team health IT design process that resulted in a highly usable technology.


Assuntos
Informática Médica , Equipe de Assistência ao Paciente , Humanos , Criança
3.
Hum Factors ; : 187208221086342, 2022 Jun 05.
Artigo em Inglês | MEDLINE | ID: mdl-35658721

RESUMO

OBJECTIVE: This study investigates how team cognition occurs in care transitions from operating room (OR) to intensive care unit (ICU). We then seek to understand how the sociotechnical system and team cognition are related. BACKGROUND: Effective handoffs are critical to ensuring patient safety and have been the subject of many improvement efforts. However, the types of team-level cognitive processing during handoffs have not been explored, nor is it clear how the sociotechnical system shapes team cognition. METHOD: We conducted this study in an academic, Level 1 trauma center in the Midwestern United States. Twenty-eight physicians (surgery, anesthesia, pediatric critical care) and nurses (OR, ICU) participated in semi-structured interviews. We performed qualitative content analysis and epistemic network analysis to understand the relationships between system factors, team cognition in handoffs and outcomes. RESULTS: Participants described three team cognition functions in handoffs-(1) information exchange, (2) assessment, and (3) planning and decision making; information exchange was mentioned most. Work system factors influenced team cognition. Inter-professional handoffs facilitated information exchange but included large teams with diverse backgrounds communicating, which can be inefficient. Intra-professional handoffs decreased team size and role diversity, which may simplify communication but increase information loss. Participants in inter-professional handoffs reflected on outcomes significantly more in relation to system factors and team cognition (p < 0.001), while participants in intra-professional handoffs discussed handoffs as a task. CONCLUSION: Handoffs include team cognition, which was influenced by work system design. Opportunities for handoff improvement include a flexibly standardized process and supportive tools/technologies. We recommend incorporating perspectives of the patient and family in future work.

4.
Int J Med Inform ; 162: 104727, 2022 Mar 02.
Artigo em Inglês | MEDLINE | ID: mdl-35305517

RESUMO

BACKGROUND: As problems of acceptance, usability and workflow integration continue to emerge with health information technologies (IT), it is critical to incorporate human factors and ergonomics (HFE) methods and design principles. Human-centered design (HCD) provides an approach to integrate HFE and produce usable technologies. However, HCD has been rarely used for designing team health IT, even though team-based care is expanding. OBJECTIVE: To describe the HCD process used to develop a usable team health IT (T3 or Teamwork Transition Technology) that provides cognitive support to pediatric trauma care teams during transitions from the emergency department to the operating room and the pediatric intensive care unit. METHODS: The HCD process included seven steps in three phases of analysis, design activities and feedback. RESULTS: The HCD process involved multiple perspectives and clinical roles that were engaged in inter-related activities, leading to design requirements, i.e., goals for the technology, a set of 47 information elements, and a list of HFE design principles applied to T3. Results of the evaluation showed a high usability score for T3. CONCLUSIONS: HFE can be integrated in the HCD process through a range of methods and design principles. That design process can produce a usable technology that provides cognitive support to a large diverse team involved in pediatric trauma care transitions. Future research should continue to focus on HFE-based design of team health IT.

5.
Appl Clin Inform ; 13(1): 218-229, 2022 01.
Artigo em Inglês | MEDLINE | ID: mdl-35139563

RESUMO

BACKGROUND: Clinicians need health information technology (IT) that better supports their work. Currently, most health IT is designed to support individuals; however, more and more often, clinicians work in cross-functional teams. Trauma is one of the leading preventable causes of children's death. Trauma care by its very nature is team based but due to the emergent nature of trauma, critical clinical information is often missed in the transition of these patients from one service or unit to another. Teamwork transition technology can help support these transitions and minimize information loss while enhancing information gathering and storage. In this study, we created a large screen technology to support shared situational awareness across multiple clinical roles and departments. OBJECTIVES: This study aimed to examine if the Teamwork Transition Technology (T3) supports teams and team cognition. METHODS: We used a scenario-based mock-up methodology with 36 clinicians and staff from the different units and departments who are involved in pediatric trauma to examine T3. RESULTS: Results of the evaluation show that most participants agreed that the technology helps achieve the goals set out in the design phase. Respondents thought that T3 organizes and presents information in a different way that was helpful to them. CONCLUSION: In this study, we examined a health IT (T3) that was designed to support teams and team cognition. The results of our evaluation show that participants agreed that T3 does support them in their work and increases their situation awareness.


Assuntos
Informática Médica , Transferência de Pacientes , Conscientização , Criança , Cognição , Humanos , Equipe de Assistência ao Paciente
6.
BJA Open ; 3: 100088, 2022 Sep.
Artigo em Inglês | MEDLINE | ID: mdl-37588575

RESUMO

Background: Micro-electrode recordings are often necessary during electrode implantation for deep brain stimulation of the subthalamic nucleus. Dexmedetomidine may be a useful sedative for these procedures, but there is limited information regarding its effect on neural activity in the subthalamic nucleus and on micro-electrode recording quality. Methods: We recorded neural activity in five patients undergoing deep brain stimulation implantation to the subthalamic nucleus. Activity was recorded after subthalamic nucleus identification while patients received dexmedetomidine sedation (loading - 1 µg kg-1 over 10-15 min, maintenance - 0.7 µg kg-1 h-1). We compared the root-mean square (RMS) and beta band (13-30 Hz) oscillation power of multi-unit activity recorded by microelectrode before, during and after recovery from dexmedetomidine sedation. RMS was normalised to values recorded in the white matter. Results: Multi-unit activity decreased during sedation in all five patients. Mean normalised RMS decreased from 2.8 (1.5) to 1.6 (1.1) during sedation (43% drop, p = 0.056). Beta band power dropped by 48.4%, but this was not significant (p = 0.15). Normalised RMS values failed to return to baseline levels during the time allocated for the study (30 min). Conclusions: In this small sample, we demonstrate that dexmedetomidine decreases neuronal firing in the subthalamic nucleus as expressed in the RMS of the multi-unit activity. As multi-unit activity is a factor in determining the subthalamic nucleus borders during micro-electrode recordings, dexmedetomidine should be used with caution for sedation during these procedures. Clinical trial number: NCT01721460.

7.
Appl Ergon ; 98: 103606, 2022 Jan.
Artigo em Inglês | MEDLINE | ID: mdl-34638036

RESUMO

While care transitions influence quality of care, less work studies transitions between hospital units. We studied care transitions from the operating room (OR) to pediatric and adult intensive critical care units (ICU) using Systems Engineering Initiative for Patient Safety (SEIPS)-based process modeling. We interviewed twenty-nine physicians (surgery, anesthesia, pediatric critical care) and nurses (OR, ICU) and administered the AHRQ Hospital Survey on Patient Safety Culture items about handoffs, care transitions and teamwork. Care transitions are complex, spatio-temporal processes and involve work during the transition (i.e., handoff and transport) and preparation and follow up activities (i.e., articulation work). Physicians defined the transition as starting earlier and ending later than nurses. Clinicians in the OR to adult ICU transition without a team handoff reported significantly less information loss and better cooperation, despite positive interview data. A team handoff and supporting articulation work should increase awareness, improving quality and safety of care transitions.


Assuntos
Transferência da Responsabilidade pelo Paciente , Adulto , Criança , Humanos , Unidades de Terapia Intensiva , Salas Cirúrgicas , Segurança do Paciente , Transferência de Pacientes
8.
Br J Anaesth ; 128(2): e109-e119, 2022 Feb.
Artigo em Inglês | MEDLINE | ID: mdl-34862001

RESUMO

The paediatric population is disproportionately affected during mass casualty incidents (MCIs). Several unique characteristics of children merit special attention during natural and man-made disasters because of their age, physiology, and vulnerability. Paediatric anaesthesiologists play a critical part of MCI care for this population, yet there is a deficit of publications within the anaesthesia literature addressing paediatric-specific MCI concerns. This narrative review article analyses paediatric MCI considerations and compares differing aspects between care provision in Australia, the UK, and the USA. We integrate some of the potential roles for anaesthesiologists with paediatric experience, which include preparation, command consultation, in-field care, pre-hospital transport duties, and emergency department, operating theatre, and ICU opportunities. Finally, we propose several methods by which anaesthesiologists can improve their contribution to paediatric MCI care through personal education, training, and institutional involvement.


Assuntos
Serviços Médicos de Emergência/organização & administração , Serviço Hospitalar de Emergência/organização & administração , Incidentes com Feridos em Massa , Fatores Etários , Anestesia/métodos , Anestesiologistas/organização & administração , Criança , Humanos , Pediatria
9.
Anesth Analg ; 133(3): 562-568, 2021 09 01.
Artigo em Inglês | MEDLINE | ID: mdl-33780391

RESUMO

Electronic cigarettes (e-cigarettes) or vaping use in adolescents has emerged as a public health crisis that impacts the perioperative care of this vulnerable population. E-cigarettes have become the most commonly used tobacco products among youth in the United States. Fruit and mint flavors and additives such as marijuana have enticed children and adolescents. E-cigarette, or vaping, product use-associated lung injury (EVALI) is a newly identified lung disease linked to vaping. Clinical presentation of EVALI can be varied, but most commonly includes the respiratory system, gastrointestinal (GI) tract, and constitutional symptoms. Clinical management of EVALI has consisted of vaping cessation and supportive therapy, including supplemental oxygen, noninvasive ventilation, mechanical ventilation, glucocorticoids, and empiric antibiotics, until infectious causes are eliminated, and in the most severe cases, extracorporeal membrane oxygenation (ECMO). Currently, although there is an insufficient evidence to determine the safety and the efficacy of e-cigarettes for perioperative smoking cessation, EVALI clearly places these patients at an increased risk of perioperative morbidity. Given the relatively recent introduction of e-cigarettes, the long-term impact on adolescent health is unknown. As a result, the paucity of postoperative outcomes in this potentially vulnerable population does not support evidence-based recommendations for the management of these patients. Clinicians should identify "at-risk" individuals during preanesthetic evaluations and adjust the risk stratification accordingly. Our societies encourage continued education of the public and health care providers of the risks associated with vaping and nicotine use and encourage regular preoperative screening and postoperative outcome studies of patients with regard to smoking and vaping use.


Assuntos
Sistemas Eletrônicos de Liberação de Nicotina , Pneumopatias/etiologia , Nicotina/efeitos adversos , Agonistas Nicotínicos/efeitos adversos , Assistência Perioperatória , Complicações Pós-Operatórias/etiologia , Fumantes , Vaping/efeitos adversos , Adolescente , Fatores Etários , Criança , Tomada de Decisão Clínica , Feminino , Humanos , Exposição por Inalação/efeitos adversos , Pneumopatias/diagnóstico , Pneumopatias/prevenção & controle , Masculino , Nicotina/administração & dosagem , Agonistas Nicotínicos/administração & dosagem , Complicações Pós-Operatórias/diagnóstico , Complicações Pós-Operatórias/prevenção & controle , Medição de Risco , Fatores de Risco
10.
J Neurosurg Anesthesiol ; 33(4): 343-346, 2021 Oct 01.
Artigo em Inglês | MEDLINE | ID: mdl-31688332

RESUMO

BACKGROUND: The choice of general anesthesia (GA) or conscious sedation (CS) may impact neurological outcomes of patients undergoing endovascular therapy (EVT) for acute ischemic stroke (AIS). The aim of this survey was to describe the practice patterns of members of the Society for Neuroscience in Anesthesiology and Critical Care (SNACC) for anesthetic management of AIS. METHODS: Following institutional review board approval, a 16-question online survey assessing anesthetic management of patients with AIS undergoing EVT was circulated to members of SNACC. RESULTS: A total of 76 SNACC members from 52 institutions and 11 countries completed the survey (12.5% response rate). Overall, 33% of institutions reported dedicated neuroanesthesia teams for EVT. Patients treated with GA ranged from 5% to 100% between centers. In total 51% and 49% of centers in the United States reported preferentially providing GA and CS, respectively, compared with 34% and 66%, respectively, in European centers. Reported anesthetic induction agents are propofol (64%), etomidate (4%) and either medication (33%). For maintenance of GA, volatile anesthetic is used more often (54%) than propofol (16%). There was wide variation in medications used for CS. Arterial catheter placement was reported by 75% and 43% of respondents for patients undergoing GA and CS, respectively. Systolic blood pressure >140 mm Hg was targeted by 35.7% of respondents, with others targeting mean arterial pressure within 10%, 20% or 30% of baseline values. Phenylephrine and norepinephrine were the most commonly used vasopressors. CONCLUSIONS: There is wide variation in anesthesia technique and hemodynamic management during EVT for AIS, and no consensus on the choice of, or preferred medications for, GA or CS, or target blood pressure and management of hypotension during the procedure.


Assuntos
Anestesiologia , Isquemia Encefálica , Procedimentos Endovasculares , AVC Isquêmico , Acidente Vascular Cerebral , Anestesia Geral , Isquemia Encefálica/terapia , Sedação Consciente , Cuidados Críticos , Humanos , Acidente Vascular Cerebral/terapia , Inquéritos e Questionários , Resultado do Tratamento
11.
Appl Ergon ; 85: 103059, 2020 May.
Artigo em Inglês | MEDLINE | ID: mdl-32174347

RESUMO

Hospital-based care of pediatric trauma patients includes transitions between units that are critical for quality of care and patient safety. Using a macroergonomics approach, we identify work system barriers and facilitators in care transitions. We interviewed eighteen healthcare professionals involved in transitions from emergency department (ED) to operating room (OR), OR to pediatric intensive care unit (PICU) and ED to PICU. We applied the Systems Engineering Initiative for Patient Safety (SEIPS) process modeling method and identified nine dimensions of barriers and facilitators - anticipation, ED decision making, interacting with family, physical environment, role ambiguity, staffing/resources, team cognition, technology and characteristic of trauma care. For example, handoffs involving all healthcare professionals in the OR to PICU transition created a shared understanding of the patient, but sometimes included distractions. Understanding barriers and facilitators can guide future improvements, e.g., designing a team display to support team cognition of healthcare professionals in the care transitions.


Assuntos
Ergonomia , Pessoal de Saúde/organização & administração , Equipe de Assistência ao Paciente/organização & administração , Transferência de Pacientes/organização & administração , Análise de Sistemas , Criança , Serviço Hospitalar de Emergência , Feminino , Humanos , Unidades de Terapia Intensiva Pediátrica , Masculino , Salas Cirúrgicas , Fluxo de Trabalho
12.
Cogn Technol Work ; 21(3): 397-416, 2019 Aug.
Artigo em Inglês | MEDLINE | ID: mdl-31485191

RESUMO

Trauma is the leading cause of disability and death in children and young adults in the US. While much is known about the medical aspects of inpatient pediatric trauma care, not much is known about the processes and roles involved in in-hospital care. Using human factors engineering (HFE) methods, we combine interview, archival document and trauma registry data to describe how intra-hospital care transitions affect process and team complexity. Specifically, we identify the 53 roles directly involved in patient care in each hospital unit and describe the 3324 total transitions between hospital units and the 69 unique pathways, from arrival to discharge, experienced by pediatric trauma patients. We continue the argument to shift from eliminating complexity to coping with it and propose supporting three levels of awareness to enhance the resilience and adaptation necessary for patient safety in health care, i.e. safety in complex systems. We discuss three levels of awareness (individual, team and organizational) and describe challenges and potential sociotechnical solutions for each. For example, one challenge to individual awareness is high time pressure. A potential solution is clinical decision support of information perception, integration and decision making. A challenge to team awareness is inadequate "non-technical" skills, e.g., leadership, communication, role clarity; simulation or another form of training could improve these. The complex, distributed nature of this process is a challenge to organizational awareness; a potential solution is to develop awareness of the process and the roles and interdependencies within it, by using process modeling or simulation.

13.
Intern Emerg Med ; 14(5): 797-805, 2019 08.
Artigo em Inglês | MEDLINE | ID: mdl-31140061

RESUMO

Pediatric trauma is one of the leading causes of morbidity and mortality in children in the USA. Every year, nearly 10 million children are evaluated in emergency departments (EDs) for traumatic injuries, resulting in 250,000 hospital admissions and 10,000 deaths. Pediatric trauma care in hospitals is distributed across time and space, and particularly complex with involvement of large and fluid care teams. Several clinical teams (including emergency medicine, surgery, anesthesiology, and pediatric critical care) converge to help support trauma care in the ED; this co-location in the ED can help to support communication, coordination and cooperation of team members. The most severe trauma cases often need surgery in the operating room (OR) and are admitted to the pediatric intensive care unit (PICU). These care transitions in pediatric trauma can result in loss of information or transfer of incorrect information, which can negatively affect the care a child will receive. In this study, we interviewed 18 clinicians about communication and coordination during pediatric trauma care transitions between the ED, OR and PICU. After the interview was completed, we surveyed them about patient safety during these transitions. Results of our study show that, despite the fact that the many services and units involved in pediatric trauma cooperate well together during trauma cases, important patient care information is often lost when transitioning patients between units. To safely manage the transition of this fragile and complex population, we need to find ways to better manage the information flow during these transitions by, for instance, providing technological support to ensure shared mental models.


Assuntos
Comunicação , Pediatria/normas , Cuidado Transicional/normas , Ferimentos e Lesões/terapia , Continuidade da Assistência ao Paciente/normas , Continuidade da Assistência ao Paciente/estatística & dados numéricos , Humanos , Relações Interprofissionais , Entrevistas como Assunto/métodos , Transferência de Pacientes/métodos , Transferência de Pacientes/normas , Transferência de Pacientes/estatística & dados numéricos , Pediatria/métodos , Pesquisa Qualitativa , Inquéritos e Questionários , Cuidado Transicional/estatística & dados numéricos
14.
Anesth Analg ; 128(6): e97-e99, 2019 06.
Artigo em Inglês | MEDLINE | ID: mdl-31094796

RESUMO

Anesthetic agents are known greenhouse gases with hundreds to thousands of times the global warming impact compared with carbon dioxide. We sought to mitigate the negative environmental and financial impacts of our practice in the perioperative setting through multidisciplinary staff engagement and provider education on flow rate reduction and volatile agent choice. These efforts led to a 64% per case reduction in carbon dioxide equivalent emissions (163 kg in Fiscal Year 2012, compared with 58 kg in Fiscal Year 2015), as well as a cost savings estimate of $25,000 per month.


Assuntos
Poluentes Atmosféricos , Anestesia por Inalação , Conservação dos Recursos Naturais , Gases de Efeito Estufa/análise , Nebulizadores e Vaporizadores , Anestesiologia , Anestésicos , Anestésicos Inalatórios/economia , Automóveis , Dióxido de Carbono , Redução de Custos , Desflurano , Cirurgia Geral , Aquecimento Global , Humanos , Tecnologia da Informação , Capacitação em Serviço , Comunicação Interdisciplinar , Isoflurano , Óxido Nitroso/análise , Enfermeiras e Enfermeiros , Sevoflurano , Suíça
16.
Appl Clin Inform ; 10(1): 113-122, 2019 01.
Artigo em Inglês | MEDLINE | ID: mdl-30759492

RESUMO

OBJECTIVE: To describe physician perceptions of the potential goals, characteristics, and content of the electronic problem list (PL) in pediatric trauma. METHODS: We conducted 12 semistructured interviews with physicians involved in the pediatric trauma care process, including residents, fellows, and attendings from four services: emergency medicine, surgery, anesthesia, and pediatric critical care. Using qualitative content analysis, we identified PL goals, characteristics, and patient-related information from these interviews and the hospital's PL etiquette document of guideline. RESULTS: We identified five goals of the PL (to document the patient's problems, to make sense of the patient's problems, to make decisions about the care plan, to know who is involved in the patient's care, and to communicate with others), seven characteristics of the PL (completeness, efficiency, accessibility, multiple users, organized, created before arrival, and representing uncertainty), and 22 patient-related information elements (e.g., injuries, vitals). Physicians' suggested criteria for a PL varied across services with respect to goals, characteristics, and patient-related information. CONCLUSION: Physicians involved in pediatric trauma care described the electronic PL as ideally more than a list of a patient's medical diagnoses and injuries. The information elements mentioned are typically found in other parts of the patient's electronic record besides the PL, such as past medical history and labs. Future work is needed to evaluate the optimal design of the PL so that users with emergent cases, such as pediatric trauma, have access to key information related to the patient's immediate problems.


Assuntos
Atitude Frente aos Computadores , Registros Eletrônicos de Saúde , Pediatria , Médicos/psicologia , Centros de Traumatologia , Humanos , Políticas , Inquéritos e Questionários
17.
J Surg Res ; 201(2): 432-9, 2016 Apr.
Artigo em Inglês | MEDLINE | ID: mdl-27020829

RESUMO

BACKGROUND: Surgical wound classification (SWC) communicates the degree of contamination in the surgical field and is used to stratify risk of surgical site infection and compare outcomes among centers. We hypothesized that by changing from nurse-directed to surgeon-directed SWC during a structured operative debrief, we will improve accuracy of documentation. METHODS: An institutional review board-approved retrospective chart review was performed. Two time periods were defined: initially, SWC was determined and recorded by the circulating nurse (before debrief, June 2012-May 2013) and allowing 6 mo for adoption and education, we implemented a structured operative debriefing including surgeon-directed SWC (after debrief, January 2014-August 2014). Accuracy of SWC was determined for four commonly performed pediatric general surgery operations: inguinal hernia repair (clean), gastrostomy ± Nissen fundoplication (clean contaminated), appendectomy without perforation (contaminated), and appendectomy with perforation (dirty). RESULTS: One hundred eighty-three cases before debrief and 142 cases after debrief met inclusion criteria. No differences between time periods were noted in regard to patient demographics, ASA class, or case mix. Accuracy of wound classification improved before debrief (42% versus 58.5%, P = 0.003). Before debrief, 26.8% of cases were overestimated or underestimated by more than one wound class, versus 3.5% of cases after debrief (P < 0.001). Interestingly, most after debrief contaminated cases were incorrectly classified as clean contaminated. CONCLUSIONS: Implementation of a structured operative debrief including surgeon-directed SWC improves the percentage of correctly classified wounds and decreases the degree of inaccuracy in incorrectly classified cases. However, after implementation of the debriefing, we still observed a 41.5% rate of incorrect documentation, most notably in contaminated cases, indicating further education and process improvement is needed.


Assuntos
Cirurgia Geral/normas , Pediatria/normas , Ferimentos e Lesões/classificação , Apendicectomia , Gastrostomia , Herniorrafia , Humanos , Infecção da Ferida Cirúrgica/etiologia , Ferimentos e Lesões/complicações
18.
Clin Neurol Neurosurg ; 127: 79-85, 2014 Dec.
Artigo em Inglês | MEDLINE | ID: mdl-25459248

RESUMO

OBJECT: We report results of the initial experience with magnetic resonance image (MRI)-guided implantation of subthalamic nucleus (STN) deep brain stimulating (DBS) electrodes at the University of Wisconsin after having employed frame-based stereotaxy with previously available MR imaging techniques and microelectrode recording for STN DBS surgeries. METHODS: Ten patients underwent MRI-guided DBS implantation of 20 electrodes between April 2011 and March 2013. The procedure was performed in a purpose-built intraoperative MRI suite configured specifically to allow MRI-guided DBS, using a wide-bore (70 cm) MRI system. Trajectory guidance was accomplished with commercially available system consisting of an MR-visible skull-mounted aiming device and a software guidance system processing intraoperatively acquired iterative MRI scans. RESULTS: A total of 10 patients (5 male, 5 female)-representative of the Parkinson Disease (PD) population-were operated on with standard technique and underwent 20 electrode placements under MRI-guided bilateral STN-targeted DBS placement. All patients completed the procedure with electrodes successfully placed in the STN. Procedure time improved with experience. CONCLUSION: Our initial experience confirms the safety of MRI-guided DBS, setting the stage for future investigations combining physiology and MRI guidance. Further follow-up is required to compare the efficacy of the MRI-guided surgery cohort to that of traditional frame-based stereotaxy.


Assuntos
Estimulação Encefálica Profunda/métodos , Imageamento por Ressonância Magnética/métodos , Procedimentos Neurocirúrgicos/métodos , Cirurgia Assistida por Computador/métodos , Adulto , Idoso , Anestesia , Estimulação Encefálica Profunda/efeitos adversos , Eletrodos Implantados , Feminino , Humanos , Masculino , Erros Médicos , Microeletrodos , Pessoa de Meia-Idade , Procedimentos Neurocirúrgicos/efeitos adversos , Doença de Parkinson/cirurgia , Técnicas Estereotáxicas , Núcleo Subtalâmico , Cirurgia Assistida por Computador/efeitos adversos
19.
Clin Med Res ; 7(3): 69-84, 2009 Sep.
Artigo em Inglês | MEDLINE | ID: mdl-19474452

RESUMO

OBJECTIVES: Many complications in the perioperative interval are associated with genetic susceptibilities that may be unknown in advance of surgery and anesthesia, including drug toxicity and inefficacy, thrombosis, prolonged neuromuscular blockade, organ failure and sepsis. The aims of this study were to design and validate the first genetic testing platform and panel designed for use in perioperative care, to establish allele frequencies in a target population, and to determine the number of mutant alleles per patient undergoing surgery. DESIGN/SETTING/PARTICIPANTS AND METHODS: One hundred fifty patients at Marshfield Clinic, Marshfield, Wisconsin, 100 patients at the Medical College of Wisconsin Zablocki Veteran's Administration Medical Center, Milwaukee, Wisconsin, and 200 patients at the University of Wisconsin Hospitals and Clinics, Madison, Wisconsin undergoing surgery and anesthesia were tested for 48 polymorphisms in 22 genes including ABC, BChE, ACE, CYP2C9, CYP2C19, CYP2D6, CYP3A4, CYP3A5, beta2AR, TPMT, F2, F5, F7, MTHFR, TNFalpha, TNFbeta, CCR5, ApoE, HBB, MYH7, ABO and Gender (PRKY, PFKFB1). Using structure-specific cleavage of oligonucleotide probes (Invader, Third Wave Technologies, Inc., Madison, WI), 96-well plates were configured so that each well contained reagents for detection of both the wild type and mutant alleles at each locus. RESULTS: There were 21,600 genotypes confirmed in duplicate. After withdrawal of polymorphisms in non-pathogenic genes (i.e., the ABO blood group and gender-specific alleles), 376 of 450 patients were found to be homozygous for mutant alleles at one or more loci. Modes of two mutant homozygous loci and 10 mutant alleles in aggregate (i.e., the sum of homozygous and heterozygous mutant polymorphisms) were observed per patient. CONCLUSIONS: Significant genetic heterogeneity that may not be accounted for by taking a family medical history, or by obtaining routine laboratory test results, is present in most patients presenting for surgery and may be detected using a newly developed genotyping platform.


Assuntos
Genômica , Oligonucleotídeos/genética , Farmacogenética/métodos , Alelos , Anestesia , Feminino , Predisposição Genética para Doença , Variação Genética , Genótipo , Homozigoto , Humanos , Masculino , Modelos Biológicos , Técnicas de Diagnóstico Molecular , Reação em Cadeia da Polimerase , Período Pré-Operatório
20.
Anesthesiology ; 110(3): 563-73, 2009 Mar.
Artigo em Inglês | MEDLINE | ID: mdl-19212259

RESUMO

BACKGROUND: The authors explored the relationship between nitrous oxide use and neurologic and neuropsychological outcome in a population of patients likely to experience intraoperative cerebral ischemia: those who had temporary cerebral arterial occlusion during aneurysm clipping surgery. METHODS: A post hoc analysis of a subset of the data from the Intraoperative Hypothermia for Aneurysm Surgery Trial was conducted. Only subjects who had temporary arterial occlusion during surgery were included in the analysis. Metrics of short-term and long-term (i.e., 3 months after surgery) outcome were evaluated via both univariate and multivariate logistic regression analysis. An odds ratio (OR) greater than 1.0 denotes a worse outcome in patients receiving nitrous oxide. RESULTS: The authors evaluated 441 patients, of which 199 received nitrous oxide. Patients receiving nitrous oxide had a greater risk of delayed ischemic neurologic deficits (i.e., the clinical manifestation of vasospasm) (OR, 1.78, 95% confidence interval [CI], 1.08-2.95; P = 0.025). However, at 3 months after surgery, there was no difference in any metric of gross neurologic outcome: Glasgow Outcome Score (OR, 0.67; CI, 0.44-1.03; P = 0.065), Rankin Score (OR, 0.74; CI, 0.47-1.16; P = 0.192), National Institutes of Health Stroke Scale (OR, 1.02; CI, 0.66-1.56; P = 0.937), or Barthel Index (OR, 0.69; CI, 0.38-1.25; P = 0.22). The risk of impairment on at least one test of neuropsychological function was reduced in those who received nitrous oxide (OR, 0.56; CI, 0.36-0.89; P = 0.013). CONCLUSION: In this patient population, use of nitrous oxide was associated with an increased risk for the development of delayed ischemic neurologic deficits; however, there was no evidence of detriment to long-term gross neurologic or neuropsychological outcome.


Assuntos
Artérias Cerebrais/cirurgia , Aneurisma Intracraniano/cirurgia , Doenças do Sistema Nervoso/psicologia , Testes Neuropsicológicos , Procedimentos Neurocirúrgicos/instrumentação , Óxido Nitroso/administração & dosagem , Complicações Pós-Operatórias/psicologia , Adulto , Oclusão com Balão/efeitos adversos , Artérias Cerebrais/efeitos dos fármacos , Feminino , Seguimentos , Humanos , Aneurisma Intracraniano/fisiopatologia , Masculino , Pessoa de Meia-Idade , Doenças do Sistema Nervoso/induzido quimicamente , Doenças do Sistema Nervoso/fisiopatologia , Procedimentos Neurocirúrgicos/efeitos adversos , Óxido Nitroso/efeitos adversos , Complicações Pós-Operatórias/induzido quimicamente , Complicações Pós-Operatórias/fisiopatologia , Estudos Prospectivos , Instrumentos Cirúrgicos/efeitos adversos , Resultado do Tratamento
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