Mortalidad perioperatoria / Perioperative mortality

Introducción: La tasa de mortalidad perioperatoria representa un indicador global del acceso seguro a la atención quirúrgica y anestesiológica. Objetivo: Caracterizar los pacientes fallecidos durante el perioperatorio en intervenciones quirúrgicas. Métodos: Se realizó un estudio descriptivo transversal en el servicio de Anestesiología del Hospital Clínico Quirúrgico Arnaldo Milián Castro, provincia Villa Clara, en el periodo período de enero de 2015 a diciembre de 2018. La población estuvo constituida por los pacientes intervenidos quirúrgicamente en dicho hospital (N: 133 724). La muestra fueron los pacientes fallecidos durante el período intraoperatorio y primeras 24 h tras la intervención quirúrgica (n: 77). Resultados: La tasa de mortalidad perioperatoria general fue de 5,76/10 000. Incidencia de mortalidad mayor en hombres (59,7 por ciento), ancianos (75,3 por ciento), con varias comorbilidades asociadas (51,9 por ciento), clase 4 de la ASA (41,5 por ciento), riesgo quirúrgico grupo II (62,3 por ciento), cirugía abdominal (63,6 por ciento), intervenciones de urgencia (88,3 por ciento), bajo una técnica anestésica general (84,4 por ciento) y en el período postoperatorio 24 h (68,8 por ciento). El shock séptico constituyó la principal causa de mortalidad (48,1 por ciento). Conclusiones: Predominaron las defunciones en ancianos con comorbilidades asociadas, alto riesgo anestésico y quirúrgico, intervenidos de urgencia bajo anestesia general, con el shock séptico como principal causa de muerte. La tasa de mortalidad perioperatoria fue similar a naciones de desarrollo socioeconómico equivalente(AU)

Introduction: Perioperative mortality rate represents a global indicator for safe access to surgical and anesthesiological care. Objective: To characterize patients who deceased during the perioperative period in surgical interventions. Methods: A cross-sectional and descriptive study was carried out in the anesthesiology service of Arnaldo Milián Castro Clinical-Surgical Hospital, in Villa Clara Province, in the period from January 2015 to December 2018. The study population consisted of patients who received surgery within that hospital (N: 133 724). The sample consisted of patients who died during the intraoperative period and within the first 24 hours after surgery (n: 77). Results: The general perioperative mortality rate was 5.76/10 000. There was incidence of higher mortality among men (59.7 percent), elderlies (75.3 percent), patients with several associated comorbidities (51.9 percent), those classified as ASA-IV (41.5 percent), those belonging to group II for surgical risk (62.3 percent), cases of abdominal surgery (63.6 percent), emergency interventions (88.3 percent), patients under general anesthetic technique (84.4 percent), and at 24 hours after the postoperative period (68.8 percent). Septic shock was the main cause of mortality (48.1 percent). Conclusions: There was a predominance of deaths among elderlies with associated comorbidities, high anesthetic, as well as surgical risk, who received emergency surgery under general anesthesia, being septic shock the main cause of death. The perioperative mortality rate was similar to that in nations of equivalent socioeconomic development(AU)

¿Qué hemos hecho en nuestra UCI de Anestesia para mantener la comunicación en la pandemia? / What have we done in our anesthesia ICU to maintain communication in the pandemic?

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Transport of Critically Ill Patients by the Anesthesia Versus the Intensive Care Unit Service: A Before-After Study of Operating Room Workflows.

BACKGROUND: We implemented a new policy at our institution where the responsibility for intensive care unit (ICU) patient transports to the operating room (OR) was changed from the anesthesia to the ICU service. We hypothesized that this approach would be associated with increased on-time starts and decreased turnover times. METHODS: In the historical model, intubated patients or those on mechanical circulatory assistance (MCA) were transported by the anesthesia service to the OR ("pre-ICU Pickup"). In our new model, these patients are transported by the ICU service to the preoperative holding area (Pre-op) where care is transferred to the anesthesia service ("post-ICU Transfer"). If judged necessary by the ICU or anesthesia attending, the patient was transported by the anesthesia service ("post-ICU Pickup"). We retrospectively reviewed case tracking data for patients undergoing surgery before (January 2014 to May 2015) and after implementation (July 2016 to June 2017) of the new policy. The primary outcome was the proportion of elective, weekday first-case, on-time starts. To adjust for confounders including comorbidities and time trends, we performed a segmented logistic regression analysis assessing the effect of our intervention on the primary outcome. Secondary outcomes were turnover times and compliance with preoperative checklist documentation. RESULTS: We identified 95 first-start and 86 turnover cases in the pre-ICU Pickup, 70 first-start and 88 turnover cases in the post-ICU Transfer, and 6 turnover cases in the post-ICU Pickup group. Ignoring time trends, the crude proportion of on-time starts increased from 32.6% in the pre-ICU Pickup to 77.1% in the post-ICU Transfer group. After segmented logistic regression adjusting for age, sex, American Society of Anesthesiologists (ASA) physical status, Sequential Organ Failure Assessment (SOFA) score, respiratory failure, endotracheal intubation, MCA, congestive heart failure (CHF), valvular heart disease, and cardiogenic and hemorrhagic shock, the post-ICU Transfer group was more likely to have an on-time start at the start of the intervention than the pre-ICU Pickup group at the end of the preintervention period (odds ratio, 11.1; 95% confidence interval [CI], 1.3-125.7; P = .043). After segmented linear regression adjusting for the above confounders, the estimated difference in mean turnover times between the post-ICU Pickup and pre-ICU Transfer group was not significant (-6.9 minutes; 95% CI, -17.09 to 3.27; P = .17). In post-ICU Transfer patients, consent, history and physical examination (H&P), and site marking were verified before leaving the ICU in 92.9%, 93.2%, and 89.2% of the cases, respectively. No adverse events were reported during the study period. CONCLUSIONS: A transition from the anesthesia to the ICU service for transporting ICU patients to the OR did not change turnover times but resulted in more on-time starts and high compliance with preoperative checklist documentation.

The effects of an aviation-style computerised pre-induction anaesthesia checklist on pre-anaesthetic set-up and non-routine events.

This prospective, observational study compared the proportion of cases with missing critical pre-induction items before and after the implementation of an aviation-style computerised pre-induction anaesthesia checklist. Trained observers recorded the availability of critical pre-induction items and evaluated the characteristics of the pre-induction anaesthesia checklist performance including provider participation and distraction level, resistance to the use of the checklist and the time required for completion. Surgical cases that met the criteria for inclusion in the National Surgical Quality Improvement Program at a single academic hospital were selected for observation. A total of 853 cases were observed before and 717 after implementation of the checklist. The proportion of cases with failure to perform all pre-induction steps decreased from 10.0% to 6.4% (p = 0.012). There was also a significant decrease in the proportion of cases with non-routine events from 1.2% cases before to none after checklist implementation (p = 0.003). In 17 cases, the checklist alerted the anaesthesia provider to correct a mistake in pre-induction preparation.

A Digital Cognitive Aid for Anesthesia to Support Intraoperative Crisis Management: Results of the User-Centered Design Process.

BACKGROUND: Stressful situations during intraoperative emergencies have negative impact on human cognitive functions. Consequently, task performance may decrease and patient safety may be compromised. Cognitive aids can counteract these effects and support anesthesiologists in their crisis management. The Professional Association of German Anesthesiologists set up a project to develop a comprehensive set of digital cognitive aids for intraoperative emergencies. A parallel development for several software platforms and stationary and mobile devices will accommodate the inhomogeneity of the information technology infrastructure within German anesthesia departments. OBJECTIVE: This paper aimed to provide a detailed overview of how the task of developing a digital cognitive aid for intraoperative crisis management in anesthesia was addressed that meets user requirements and is highly user-friendly. METHODS: A user-centered design (UCD) process was conducted to identify, specify, and supplement the requirements for a digital cognitive aid. The study covered 4 aspects: analysis of the context of use, specification of user requirements, development of design solutions, and evaluation of design solutions. Three prototypes were developed and evaluated by end users of the application. Following each evaluation, the new requirements were prioritized and used for redesign. For the first and third prototype, the System Usability Scale (SUS) score was determined. The second prototype was evaluated with an extensive Web-based questionnaire. The evaluation of the third prototype included a think-aloud protocol. RESULTS: The chosen methods enabled a comprehensive collection of requirements and helped to improve the design of the application. The first prototype achieved an average SUS score of 74 (SD 12), indicating good usability. The second prototype included the following main revisions: 2-column layout, initial selection of patient type (infant, adult, or parturient), 4 offered search options, and the option to check off completed action steps. Its evaluation identified the following major revision points: add quick selection for resuscitation checklists, design the top bar and tabs slightly larger, and add more pictograms to the text. The third prototype achieved an average SUS score of 77 (SD 15). The evaluation of the think-aloud protocol revealed a good intuitiveness of the application and identified a missing home button as the main issue. CONCLUSIONS: Anesthesiology-as an acute medical field-is particularly characterized by its high demands on decision making and action in dynamic, or time-critical situations. The integration of usability aspects is essential for everyday and emergency suitability. The UCD process allowed us to develop a prototypical digital cognitive aid, exhibiting high usability and user satisfaction in the demanding environment of anesthesiological emergencies. Both aspects are essential to increase the acceptance of the application in later stages. The study approach, combining different methods for determining user requirements, may be useful for other implementation projects in a highly demanding environment.

An Automated Critical Event Screening and Notification System to Facilitate Preanesthesia Record Review.

BACKGROUND: Anesthesia information management systems make prior anesthesia records readily available for review when patients return for a subsequent procedure but may create a problem of too much documentation to review in a limited amount of time. We implemented a screening tool to facilitate the identification of critical documentation for review. METHODS: An algorithm was developed to electronically search prior anesthesia records for predefined critical events and flag records containing these events. Our web-based daily case schedule was modified to contain a warning message for any patient on the schedule who has a prior record flagged by the system, in addition to a preexisting hyperlink to view the relevant record. A retrospective analysis was performed to determine the impact of the warning messages on the frequency with which the care team reviewed these records before providing anesthesia care. RESULTS: The screening algorithm flagged 13% of archived cases as critical. There were 3329 and 3369 cases in the 6 months before and after system implementation, respectively, that had prior critical records available for review at that time. One or more of these critical records were viewed before the subsequent case start in 39% vs 59% (P < .01) of cases in the pre- versus postimplementation periods. Subgroup analysis revealed that the increase was greatest for attending anesthesiologists working alone. CONCLUSIONS: We created a system to automatically detect critical events in prior anesthesia records for the purpose of forewarning the anesthesia care team when the same patient returns for another procedure. Inclusion of these warnings on the daily case schedule was associated with an increased frequency of preanesthesia review of old records.

Using Lean Six Sigma Methodology to Improve Quality of the Anesthesia Supply Chain in a Pediatric Hospital.

Six Sigma and Lean methodologies are effective quality improvement tools in many health care settings. We applied the DMAIC methodology (define, measure, analyze, improve, control) to address deficiencies in our pediatric anesthesia supply chain. We defined supply chain problems by mapping existing processes and soliciting comments from those involved. We used daily distance walked by anesthesia technicians and number of callouts for missing supplies as measurements that we analyzed before and after implementing improvements (anesthesia cart redesign). We showed improvement in the metrics after those interventions were implemented, and those improvements were sustained and thus controlled 1 year after implementation.

Implementing situation-background-assessment-recommendation in an anaesthetic clinic and subsequent information retention among receivers: A prospective interventional study of postoperative handovers.

BACKGROUND: Communication errors cause clinical incidents and adverse events in relation to surgery. To ensure proper postoperative patient care, it is essential that personnel remember and recall information given during the handover from the operating theatre to the postanaesthesia care unit. Formalizing the handover may improve communication and aid memory, but research in this area is lacking. OBJECTIVE: The objective of this study was to evaluate whether implementing the communication tool Situation-Background-Assessment-Recommendation (SBAR) affects receivers' information retention after postoperative handover. DESIGN: A prospective intervention study with an intervention group and comparison nonintervention group, with assessments before and after the intervention. SETTING: The postanaesthesia care units of two hospitals in Sweden during 2011 and 2012. PARTICIPANTS: Staff involved in the handover between the operating theatre and the postanaesthesia care units within each hospital. INTERVENTION: Implementation of the communication tool SBAR in one hospital. MAIN OUTCOME MEASURES: The main outcome was the percentage of recalled information sequences among receivers after the handover. Data were collected using both audio-recordings and observations recorded on a study-specific protocol form. RESULTS: Preintervention, 73 handovers were observed (intervention group, n = 40; comparison group, n = 33) involving 72 personnel (intervention group, n = 40; comparison group, n = 32). Postintervention, 91 handovers were observed (intervention group, n = 44; comparison group, n = 47) involving 57 personnel (intervention group, n = 31; comparison group, n = 26). In the intervention group, the percentage of recalled information sequences by the receivers increased from 43.4% preintervention to 52.6% postintervention (P = 0.004) and the SBAR structure improved significantly (P = 0.028). In the comparison group, the corresponding figures were 51.3 and 52.6% (P = 0.725) with no difference in SBAR structure. When a linear regression generalised estimating equation model was used to account for confounding influences, we were unable to show a significant difference in the information recalled between the intervention group and the nonintervention group over time. CONCLUSION: Compared with the comparison group with no intervention, when SBAR was implemented in an anaesthetic clinic, we were unable to show any improvement in recalled information among receivers following postoperative handover. TRIAL REGISTRATION: Current controlled trials http://www.controlled-trials.com Identifier: ISRCTN37251313.

Casos clínicos sobre ventilación independiente en traqueoplastia de urgencia / Clinical cases about independent ventilation in emergency tracheoplasty

Introducción: el uso de la ventilación mecánica artificial con intubación endotraqueal prologada, es causa de múltiples complicaciones graves como la estenosis traqueal baja postintubación. La cirugía de tráquea plantea un reto anestésico debido a la dificultad en el mantenimiento de la ventilación. En situaciones de emergencias se puede usar la ventilación pulmonar independiente.Objetivos: mostrar la conducta anestesiológica en ambos casos en los cuales fue necesario esta técnica ventilatoria. Casos clínicos: en el presente reporte se informan de dos casos con estenosis traqueal baja en estado crítico que fueron intervenidos de urgencia, para realizar una resección circunferencial de los anillos traqueales afectados y anastomosis término- terminal. Se describe la valoración preoperatoria realizada por los anestesiólogos, resultados de estudios imaginológicos y gasométricos. También se expone la medicación preanestésica y el plan anestésico elaborado con especial énfasis en el intraoperatorio donde fue necesario como medida salvadora realizar ventilación independiente asincrónica con dos equipos diferentes. Se describen los cuidados postoperatorios del paciente. Conclusiones: en la evaluación preoperatoria es de vital importancia conocer el sitio exacto de la estenosis por parte del anestesiólogo. También se proponen valores de volumen y presión para el uso de la ventilación independiente asincrónica, como una medida insustituible en situaciones de emergencia y a la cual se le pudiera dar más uso en lugares donde no existan condiciones óptimas para otros métodos de ventilación(AU)

Foundation: the use of the mechanical artificial ventilation with tracheal intubation has been a helpful treatment in patients's great quantity, but cause of several complications like postintubation tracheal stenosis. The surgery of trachea presents an anesthetic challenge due to the difficulty in the maintenance of the ventilation. The independent pulmonary ventilation can be used in situations of emergencies. Objectives: showing the conduct anesthesiologist both times. Clinical case: in the present report they get informed of two cases with low tracheal stenosis in critic illness patient that they were intervened of urgency, in order to accomplish a circumferential resection of tracheal affected rings and anastomosis terminal term. The pre-operative evaluation accomplished by anesthetists, proven to be of studies describes scanners and arteries blood gas itself. Also the pre-medication and the anesthetic management elaborated with emphasis in the trans-operative period where he was necessary to use a independent asynchronic ventilation with two different ventilation machine are exposed. They describe the patient's taken care of aftercares. Conclusions: in the pre-operative evaluation it becomes of vital importance knowing the anesthetist's exact place of stenosis for part. Also they recomended values of volume and pressure for the use of the independent asynchronic ventilation like an irreplaceable measure in emergency situations, and to which may give it plus use in places where optimal conditions for another methods of ventilation do not exist(AU)

A System for Anesthesia Drug Administration Using Barcode Technology: The Codonics Safe Label System and Smart Anesthesia Manager.

BACKGROUND: Many anesthetic drug errors result from vial or syringe swaps. Scanning the barcodes on vials before drug preparation, creating syringe labels that include barcodes, and scanning the syringe label barcodes before drug administration may help to prevent errors. In contrast, making syringe labels by hand that comply with the recommendations of regulatory agencies and standards-setting bodies is tedious and time consuming. A computerized system that uses vial barcodes and generates barcoded syringe labels could address both safety issues and labeling recommendations. METHODS: We measured compliance of syringe labels in multiple operating rooms (ORs) with the recommendations of regulatory agencies and standards-setting bodies before and after the introduction of the Codonics Safe Label System (SLS). The Codonics SLS was then combined with Smart Anesthesia Manager software to create an anesthesia barcode drug administration system, which allowed us to measure the rate of scanning syringe label barcodes at the time of drug administration in 2 cardiothoracic ORs before and after introducing a coffee card incentive. Twelve attending cardiothoracic anesthesiologists and the OR satellite pharmacy participated. RESULTS: The use of the Codonics SLS drug labeling system resulted in >75% compliant syringe labels (95% confidence interval, 75%-98%). All syringe labels made using the Codonics SLS system were compliant. The average rate of scanning barcodes on syringe labels using Smart Anesthesia Manager was 25% (730 of 2976) over 13 weeks but increased to 58% (956 of 1645) over 8 weeks after introduction of a simple (coffee card) incentive (P < 0.001). CONCLUSIONS: An anesthesia barcode drug administration system resulted in a moderate rate of scanning syringe label barcodes at the time of drug administration. Further, adaptation of the system will be required to achieve a higher utilization rate.

Versatility of delayed reverse-flow islanded sural flap for reconstructing pretibal defects among high-risk patients.

BACKGROUND AND OBJECTIVE: Reconstructing defects related to the leg soft tissue may be quite difficult because the soft tissue over the bone is rather thin and the tendons lie right under the skin. Distal pedicle sural neurocutaneous flap with its long pedicle composed of skin, subcutaneous tissue and fascia is suitable for superficial defects. This study aimed to determine the usability of the delayed reverse-flow (distally based) islanded sural flap for correcting tibial and ankle defects. DESIGN AND SETTINGS: A prospective clinical trial conducted from 2012 to 2013 in Plastic & Reconstructive and Aesthetic Surgery clinic, Necmettin Erbakan University, Turkey. METHODS: Eleven patients with pretibial defects and a visible open bone who underwent reconstruction with reverse-flow islanded sural flap between 2012 and 2013 were included in the study. All patients who had defects between the middle of the tibia and the foot underwent surgery in 2 sessions under spinal anesthesia. In the first session, necrotic tissues were debrided and cultures were taken, and the flap was delayed. Reconstruction was performed in the second session. RESULTS: The biggest flap was 16.11 cm and the smallest one was 5.6 cm. The longest pedicle was 27 cm long and the shortest one 21 cm. A total of 6 patients were smokers and 3 had diabetes mellitus. One patient had partial necrosis of the flap, and the necrosis was healed secondarily. No complications were seen in other patients. CONCLUSION: Delayed reverse-flow islanded sural flaps can be used as an easy, quick, and secure surgical alternative to free flaps for correcting in leg defects involving an exposed bone between the middle portion of the tibia and the heel.

Derivación submandibular para garantizar la vía respiratoria en la traumatologia facial / Submandibular bypass to secure the airway in facial trauma

Introducción: uno de los recursos más efectivos en traumatismos maxilofaciales es el empleo de la traqueostomía, esta se conoce desde hace más de doscientos años. Pocas intervenciones quirúrgicas han salvado tantas vidas como la traqueostomía pues esta, permite garantizar una vía respiratoria segura para el paciente, pero como todo proceder quirúrgico no está exenta de complicaciones. La derivación endotraqueal submandibular se presenta como una alternativa viable en los casos que se requiera una traqueostomía temporal, esta consiste en el paso del tubo endotraqueal de la boca para el exterior a través de una incisión en la región submandibular. Se denomina fractura panfacial cuando las lesiones comprometen los tercios superiores, medio e inferior da la cara y que resulta en una perturbación grave de la arquitectura facial. Objetivos: dar a conocer siete casos realizados desde el 2006 hasta la actualidad, cuatro en el Hospital General Docente "Abel Santamaría Cuadrado" de Pinar del Rio, Cuba, y tres en la Clínica Multiperfil de Luanda, Angola. Métodos: se exponen la técnica descrita por Altemir y detallada por Guevara Mantilla y cols en sus cuatro fases. Los pacientes fueron llevados al quirófano de forma urgente y electiva mediante coordinación con el Servicio de Anestesiología y Reanimación. Se realizó, primero la derivación submandibular y seguidamente el proceder programado para cada paciente. Conclusiones: el proceder permite un adecuado control de la vía respiratoria y constituye una alternativa segura y eficaz en pacientes con traumas complejos del tercio medio facial. No se han encontraron complicaciones ni durante ni en el posoperatorio(AU)

Introduction: tracheostomy is one of the most effective resources in the treatment of facial trauma. This technique has been used for more than two hundred years. Few surgical interventions have saved as many lives as tracheostomy, since it makes it possible to secure a safe airway for the patient. However, as with all surgical procedures, tracheostomy may also have complications. Submandibular endotracheal bypass is a viable alternative when temporary tracheostomy is required. It consists in the passage of an endotracheal tube from the mouth outwards through an incision in the submandibular region. It is called panfacial fracture when the lesions compromise the upper, middle and lower thirds of the face, resulting in serious disturbance of the facial architecture. Objectives: present seven cases treated from 2006 to the present: four at Abel SantamarÝa Cuadrado General Teaching Hospital in Pinar del RÝo, Cuba, and three at the Multiprofile Clinic of Luanda, Angola. Methods: a presentation is provided of the four stages of the technique described by Altemir and detailed by Guevara Mantilla and cols. Patients were carried to the operating room for emergency and elective surgery prior coordination with the Anesthesiology and Resuscitation Service. Submandibular bypass was performed first, followed by the procedure scheduled for each patient. Conclusions: the procedure allows appropriate control of the airway and constitutes a safe, effective alternative for patients with complex trauma of the facial middle third. No complications were found during surgery or in the postoperative period(AU)

Componente para la lectura de datos por alas-HIS desde máquinas de anestesia / Data reader component by alas-HIS from anesthesia machines

El presente trabajo tiene como objetivo desarrollar el componente de comunicación entre máquinas de anestesia y el Sistema de Información Hospitalaria alas-HIS, que permita visualizar, almacenar y graficar en tiempo real la información obtenida de los equipos. El desarrollo está basado en una conexión entre la máquina de anestesia y una PC a través del puerto serie estándar RS 232. A partir de la lectura de los bytes recibidos desde el equipo, se propone una solución para decodificar los datos asociados a los indicadores de anestesia. Para lograr la solución es necesario conocer el protocolo de comunicaciones del equipo con el que se desea comunicar la aplicación. Se utilizó el lenguaje de programación Java y su API de Comunicaciones Serie para la comunicación con los dispositivos externos. Se utilizó Eclipse SDK V3, 4, 2 como Entorno de Desarrollo Integrado. Para generar los gráficos se utilizó la librería JFreeChart. El componente posibilitará visualizar, almacenar y graficar los datos obtenidos en tiempo real desde las máquinas de anestesia. Esto permitirá a los médicos una mejor comprensión de los indicadores, evitará errores humanos y ayudará a esclarecer casos médico-legales(AU)

This investigation aims to develop the communications component between anesthesia machines and alas HIS Hospital Information System, which will permit to visualize, to storage and to graphic in real time, the data cmoing from the equipment. The development is supported on any connection between the anesthesia machine and the PC through the standard serial port RS 232. From the data obtained of the equipment, it is proposed a solution to decode information related with anesthesia variables. To achieve the objective, is important to know the communications protocol of the hardware connected with the application. To implement it, the Java Programming Language and its Serial Communications API were used to connect external devices with the software. It was used Eclipse SDK V3, 4, 2 as development IDE. To get the graphics was used the JFreeChart library. The component will allow the visualizing, storage, and graphic representation of real time information from the anesthesia machines. To the physicians, it will permit better interpretation of anesthesia variables, thus avoiding human mistakes and helping to solve legal-medical cases(AU)

Technology diffusion of anesthesia information management systems into academic anesthesia departments in the United States.

BACKGROUND: Anesthesia information management systems (AIMS) are electronic health records that automatically import vital signs from patient monitors and allow for computer-assisted creation of the anesthesia record. When most recently surveyed in 2007, it was estimated that at least 16% of U.S. academic hospitals (i.e., with an anesthesia residency program) had installed an AIMS. At least an additional 28% reported that they were in the process of implementing, or searching for an AIMS. In this study, we updated the adoption figures as of May 2013 and examined the historical trend of AIMS deployment in U.S. anesthesia residency programs from the perspective of the theory of diffusion of technologic innovations. METHODS: Questionnaires were sent by e-mail to program directors or their identified contact individuals at the 130 U.S. anesthesiology residency programs accredited as of June 30, 2012 by the Accreditation Council for Graduate Medical Education. The questionnaires asked whether the department had an AIMS, the year of installation, and, if not present, whether there were plans to install an AIMS within the next 12 months. Follow-up e-mails and phone calls were made until responses were obtained from all programs. Results were collected between February and May 2013. Implementation percentages were determined using the number of accredited anesthesia residency programs at the start of each academic year between 1987 and 2013 and were fit to a logistic regression curve using data through 2012. RESULTS: Responses were received from all 130 programs. Eighty-seven (67%) reported that they currently are using an AIMS. Ten programs without a current AIMS responded that they would be installing an AIMS within 12 months of the survey. The rate of AIMS adoption by year was well fit by a logistic regression curve (P = 0.90). CONCLUSIONS: By the end of 2014, approximately 75% of U.S. academic anesthesiology departments will be using an AIMS, with 84% adoption expected between 2018 and 2020. Historical adoption of AIMS has followed Roger's 1962 formulation of the theory of diffusion of innovation.

Aportaciones de la Armada española en la introducción de la anestesia en España. La ciencia médica en el último tercio del siglo xix / Contributions of the Spanish Navy to the introduction of anaesthesia in Spain. Medical science in the last third of the xix century

Las últimas décadas del siglo xix son años de resurgimiento y progreso en el ámbito de la Sanidad Naval, encontrándose a la vanguardia de las estructuras sanitarias europeas del momento. En esta época, los médicos de la armada desarrollaron unos documentos conocidos como «Memorias Clínicas», establecidas previamente como obligatorias en sus reglamentos y ordenanzas. Preciosos documentos de la ciencia médica y arte de curar que se encuentran depositados en el Archivo General de la Marina (Viso del Marqués, Ciudad Real). Si bien la información recogida en estas Memorias es muy variada, hemos centrado el interés en aquellas que versan sobre el descubrimiento y desarrollo de la anestesia. La implantación de la misma en España estuvo rodeada de una inmensa polémica, con defensores y detractores. La exclusividad de los documentos que aquí se presentan es testimonio original del saber médico-quirúrgico de la época y sitúan la Sanidad Naval española a la vanguardia de las estructuras sanitarias europeas del momento(AU)

The last decades of the xix century were years of resurgence and progress in the field of Naval Health, which was in the vanguard of European health structures at that time. In this era, the navy physicians produced some documents known as “Memorias Clínicas” (Clinical Reports), previously established as obligatory in their rules and regulations. Valuable documents on medical science and the art of healing are deposited in the Archivo General de la Marina (Viso del Marqués, Ciudad Real). Although the information recorded in these Reports varies considerably, we have centred our interest on those that focus on the discovery and development of anaesthesia. The introduction of these discoveries was surrounded by immense controversy, with its defenders and critics. The exclusiveness of the documents presented here is an original testimony to the medical-surgical knowledge of the era and places Naval Health in the vanguard of European health structures at that time(AU)