Safety of prone emergence from general endotracheal anesthesia in patients undergoing ERCP: a randomized controlled trial.

BACKGROUND: Conventional supine emergence and prone extubation from general endotracheal anesthesia (GEA) are associated with extubation-related adverse events (ERAEs). Given the minimally invasive nature of endoscopic retrograde cholangiopancreatography (ERCP) as well as the improved ventilation/perfusion matching and easier airway opening in the prone position, we aimed to assess the safety of prone emergence and extubation in patients undergoing ERCP under GEA. METHODS: Totally, 242 eligible patients were recruited and randomized into the supine extubation group (n = 121; supine group) and the prone extubation group (n = 121; prone group). The primary endpoint was the incidence of ERAEs during emergence, including hemodynamic fluctuations, coughing, stridor, and hypoxemia requiring airway maneuvers. The secondary endpoints included the incidence of monitoring disconnections, extubation time, recovery time, room exit time, and post-procedure sore throat. RESULTS: The incidence of ERAEs was significantly lower in the prone group compared with the supine group (8.3% vs 34.7%, OR = 0.17, 95% CI 0.18-0.56; P < 0.001). Moreover, the prone group demonstrated no monitoring disconnections, shorter extubation time and room exit time, faster recovery, and, lower frequency and milder sore throat after the procedure. CONCLUSIONS: For patients undergoing ERCP under GEA, compared with supine, prone emergence, and extubation had remarkably lower rates of EAREs and better recovery, and can maintain continuous monitoring and improve efficiency.

Pro-Con Debate: Monitored Anesthesia Care Versus General Endotracheal Anesthesia for Endoscopic Retrograde Cholangiopancreatography.

Over the past several decades, anesthesia has experienced a significant growth in nonoperating room anesthesia. Gastrointestinal suites represent the largest volume location for off-site anesthesia procedures, which include complex endoscopy procedures like endoscopic retrograde cholangiopancreatography (ERCP). These challenging patients and procedures necessitate a shared airway and are typically performed in the prone or semiprone position on a dedicated procedural table. In this Pro-Con commentary article, the Pro side supports the use of monitored anesthesia care (MAC), citing fewer hemodynamic perturbations, decreased side effects from inhalational agents, faster cognitive recovery, and quicker procedural times leading to improved center efficiency (ie, quicker time to discharge). Meanwhile, the Con side favors general endotracheal anesthesia (GEA) to reduce the infrequent, but well-recognized, critical events due to impaired oxygenation and/or ventilation known to occur during MAC in this setting. They also argue that procedural interruptions are more frequent during MAC as anesthesia professionals need to rescue patients from apnea with various airway maneuvers. Thus, the risk of hypoxemic episodes is minimized using GEA for ERCP. Unfortunately, neither position is supported by large randomized controlled trials. The consensus opinion of the authors is that anesthesia for ERCP should be provided by a qualified anesthesia professional who weighs the risks and benefits of each technique for a given patient and clinical circumstance. This Pro-Con article highlights the many challenges anesthesia professionals face during ERCPs and encourages thoughtful, individualized anesthetic plans over knee-jerk decisions. Both sides agree that an anesthetic technique administered by a qualified anesthesia professional is favored over an endoscopist-directed sedation approach.

Recomendaciones para la evaluación y manejo de la vía aérea difícil prevista y no prevista de la Societat Catalana d'Anestesiologia, Reanimació I Terapèutica del Dolor, basadas en la adaptación de guías de práctica clínica y consenso de expertos / Recommendations for the evaluation and management of the anticipated and non-anticipated difficult airway of the Societat Catalana d'Anestesiologia, Reanimació I Terapèutica del Dolor, based on the adaptation of clinical practice guidelines and expert consensus

La Sección de Vía Aérea de la Sociedad Catalana de Anestesiología, Reanimación y Terapéutica del Dolor (SCARTD) presenta la actualización de las recomendaciones para la evaluación y manejo de la vía aérea difícil con el fin de incorporar los avances técnicos y los cambios observados en la práctica clínica desde la publicación de la primera edición en 2008. La metodología elegida fue la adaptación de 5 guías internacionales recientemente publicadas, cuyo contenido fue previamente analizado y comparado de forma estructurada, y el consenso de expertos de los 19 centros participantes. El documento final fue sometido a la valoración de los miembros de la SCARTD y a la revisión por parte de 11 expertos independientes. Estas recomendaciones están pues sustentadas en la evidencia científica actualmente disponible y en un amplio acuerdo de los profesionales de su ámbito de aplicación. En esta edición se amplía la definición de vía aérea difícil, abarcando todas las técnicas de manejo, y se hace mayor hincapié en la valoración de la vía aérea y en la clasificación en 3 categorías según el potencial grado de dificultad y las consideraciones de seguridad adicionales, que guiarán la planificación de la estrategia a seguir. La preparación previa al manejo de la vía aérea, no solo relativa al paciente y al material, sino también a la comunicación e interacción entre todos los agentes implicados, ocupa un lugar destacado en todos los escenarios incluidos en el presente documento. El texto refleja el aumento progresivo del uso de los videolaringoscopios y de los dispositivos de segunda generación en nuestro entorno y promueve tanto su uso electivo como el uso precoz en la vía aérea no prevista. También recoge la creciente utilización de la ecografía como herramienta de apoyo en la exploración y toma de decisiones. Se han abordado nuevos escenarios como el riesgo de broncoaspiración y la extubación considerada difícil. Finalmente, se trazan las líneas maestras de los programas de entrenamiento y formación continuada en vía aérea necesarios para garantizar la implementación efectiva y segura de las recomendaciones

The Airway Division of the Catalan Society of Anaesthesiology, Intensive Care and Pain Management (SCARTD) presents its latest guidelines for the evaluation and management of the difficult airway. This update includes the technical advances and changes observed in clinical practice since publication of the first edition of the guidelines in 2008. The recommendations were defined by a consensus of experts from the 19 participating hospitals, and were adapted from 5 recently published international guidelines following an in-depth analysis and systematic comparison of their recommendations. The final document was sent to the members of SCARTD for evaluation, and was reviewed by 11 independent experts. The recommendations, therefore, are supported by the latest scientific evidence and endorsed by professionals in the field. This edition develops the definition of the difficult airway, including all airway management techniques, and places emphasis on evaluating and classifying the airway into 3 categories according to the anticipated degree of difficulty and additional safety considerations in order to plan the management strategy. Pre-management planning, in terms of preparing patients and resources and optimising communication and interaction between all professionals involved, plays a pivotal role in all the scenarios addressed. The guidelines reflect the increased presence of video laryngoscopes and second-generation devices in our setting, and promotes their routine use in intubation and their prompt use in cases of unanticipated difficult airway. They also address the increased use of ultrasound imaging as an aid to evaluation and decision-making. New scenarios have also been included, such as the risk of bronchoaspiration and difficult extubation Finally, the document outlines the training and continuing professional development programmes required to guarantee effective and safe implementation of the guidelines

Capacidad del índice de El-Ganzouri para predecir el grado de dificultad en la intubación traqueal / El-Ganzouri index effectiveness for predicting the degree difficulty in tracheal intubation

Introducción: La intubación de la vía respiratoria difícil constituye un problema de salud. Para prevenirla, se han utilizado diferentes índices. Objetivo: Evaluar la utilidad del índice de El-Ganzouri en la predicción del grado de dificultad en la intubación traqueal mediante laringoscopia convencional. Método: Se realizó un estudio descriptivo de corte transversal, en pacientes que requirieron intubación traqueal, en el Hospital Hermanos Ameijeiras, entre febrero de 2014 y 2017. Esta prueba combina y estratifica siete variables derivadas de parámetros observacionales asociadas individualmente. Se estratificó sus valores y se interpretó < 4 vía respiratoria de fácil acceso y ; 4 vía respiratoria de difícil acceso. Resultados: Se estudiaron 94 pacientes en los que se evaluó el índice de El-Ganzouri. Predominó el grupo etáreo de 50 a 59 años (29,8 por ciento) y el sexo masculino 52,1 por ciento. ASA II fue más frecuente en 66 por ciento. El índice de El Ganzouri primó la apertura oral lt; 4 cm, la distancia tiromentoniana gt; 6.5 cm, El Mallamapati I en 91,5 por ciento, los movimientos del cuello gt; 90°, el peso corporal < 90 kg y ningún antecedente de historia de dificultad en la intubación 67,0 por ciento. Al corroborar las pruebas predictivas con la de Cormack y Lehane, se observó que 92,6 por ciento de los pacientes presentaron una vía respiratoria fácil y esta condición se obtuvo en el 78,7 por ciento con el Índice El Ganzouri. La sensibilidad fue de 71,43 por ciento y la especificidad fue de 20,69 por ciento. El valor predictivo positivo de 6,76 y 90,0 de predictivo negativo. Conclusiones: Se confirmó la utilidad del índice de riesgo multivariado de El-Ganzouri en la predicción del grado de dificultad en la intubación traqueal mediante laringoscopia convencional. Se identificó la sensibilidad, especificidad, valores predictivos positivos y negativos los cuales mostraron buena predicción de vía respiratoria anatómicamente difícil(AU)

Anesthesia-administered sedation for endoscopic retrograde cholangiopancreatography: monitored anesthesia care or general endotracheal anesthesia?

PURPOSE OF REVIEW: The decision to undertake monitored anesthesia care (MAC) or general endotracheal anesthesia (GEA) for patients undergoing endoscopic retrograde cholangiopancreatography (ERCP) is influenced by many factors. These include locoregional practice preferences, procedure complexity, patient position, and comorbidities. We aim to review the data regarding anesthesia-administered sedation for ERCP and identify the impact of airway management on procedure success, adverse event rates and endoscopy unit efficiency. RECENT FINDINGS: Several studies have consistently identified patients at high risk for sedation-related adverse events during ERCP. This group includes those with higher American Society of Anesthesiologists class and (BMI). ERCP is commonly performed in the prone position, which can make the placement of an emergent advanced airway challenging. Although this may be alleviated by performing ERCP in the supine position, this technique is more technically cumbersome for the endoscopist. Data regarding the impact of routine GEA on endoscopy unit efficiency remain controversial. SUMMARY: Pursuing MAC or GEA for patients undergoing ERCP is best-approached on an individual basis. Patients at high risk for sedation-related adverse events likely benefit from GEA. Larger, multicenter randomized controlled trials will aid significantly in better delineating which sedation approach is best for an individual patient.

¿Ha muerto la laringoscopia directa? Larga vida a la videolaringoscopia / Is direct laryngoscopy dead? Long live the video laryngoscopy

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Resultados de un taller de cricotiroidotomía quirúrgica con un modelo de tráquea de cerdo / Results of a surgical cricothyrotomy workshop with a pig trachea model

Introducción: Las últimas guías de la Difficult Airway Society recomiendan que todos los anestesiólogos deberían estar entrenados para la realización de una cricotiroidotomía quirúrgica (CtQ). El objetivo de este estudio es analizar los resultados de aprendizaje de un taller de CtQ mediante la evaluación de la tasa de éxito y el tiempo necesario para realizarla en un modelo de tráquea porcina. Material y métodos: Diseñamos un taller en el que cada alumno respondía un cuestionario con datos demográficos y conocimientos teóricos sobre el abordaje quirúrgico de la vía aérea. Durante la hora siguiente se revisaron aspectos teóricos. Se mostró el modelo y realizamos una CtQ siguiendo la técnica clásica. Después, en grupos de 3-4 alumnos con un instructor, los alumnos realizaron 6 CtQ cada uno. Registramos si la ventilación era correcta, el tiempo necesario para realizarla y la facilidad de realización evaluada por alumno e instructor. Finalmente, los alumnos respondieron un cuestionario de aspectos teóricos. Realizamos un análisis estadístico, considerando estadísticamente significativo un valor de p<0,05. Resultados: Llevamos a cabo 8 ediciones del taller, con 91 alumnos. Consiguieron hacer la CtQ y ventilar correctamente el 86% en el primer intento y el 92% en el sexto (p<0,0001). El tiempo necesario para hacer una CtQ pasó de 163 [107-211] a 70 [55-85] segundos (p<0,0001). Al final del taller los alumnos habían mejorado sus conocimientos teóricos (p<0,0001) y la percepción de facilidad de la técnica. Conclusión: El taller realizado mejora los conocimientos teóricos y la competencia en la realización de una CtQ

Background: The latest Difficult Airway Society (DAS) guidelines recommend that all anaesthesiologists should to be trained in the performing of a surgical cricothyrotomy (CtQ). The aim of this study was to analyse the learning results of a CtQ workshop by assessing the success rate and time to perform CtQ on a porcine tracheal model. Material and methods: A workshop was designed in which each student completed a questionnaire with demographic data and theoretical knowledge about surgical approaches of airway. During the following hour, a review was presented theoretical aspects of CtQ. The model was shown and a CtQ was performed using a classical technique. Afterwards, in groups of 3-4 students with an instructor, each one of the students performed 6 CtQ. A record was made on whether the ventilation was correct, the time to perform CtQ, and the ease of performing the CtQ by the students and instructors. Finally, students completed a questionnaire on the theoretical aspects. Students and instructors performed a workshop debriefing. A statistical analysis was performed, considering a P-value <0.05 as statistically significant. Results: A total of 8 workshop sessions were held with a total of 91 students. At first attempt, 86% of students performed a CtQ with successful ventilation, and 92% at the sixth attempt (P<.0001). Time taken was 163 [107-211] seconds at first attempt, and 70 [55-85] seconds at the sixth (P<.0001). At the end of workshop, students had improved their theoretical knowledge (P<.0001) and perception of the ease of the technique. Conclusion: Workshop performance improved theoretical knowledge and competence in surgical cricothyrotomy

Localización de la membrana cricotiroidea en varones: influencia de las características morfológicas del cuello / Locating the cricothyroid membrane in males: Influence of the morphological characteristics of the neck

Introducción: La cricotirotomía es una técnica que forma parte de los algoritmos de manejo de vía aérea difícil. Para su adecuada realización se precisa una correcta localización de la membrana cricotiroidea (MCT). Diversos estudios han encontrado una alta tasa de error en la localización por palpación, lo que condiciona un fracaso en el resultado de la técnica. Objetivos: El propósito del estudio fue determinar si las características morfológicas del cuello del paciente influyen en la correcta localización de la MCT y en el tiempo empleado. Materiales y métodos: Estudio observacional donde participaron voluntariamente anestesiólogos e intensivistas en una simulación consistente en un escenario de «cannot intubate, cannot oxygenate» donde tenían que localizar en el menor tiempo posible la MCT en 2 varones seleccionados con diferentes características morfológicas de cuello. Se cronometró el tiempo empleado desde que el sujeto comenzaba a localizar la MCT hasta que la marcaba con un rotulador. Resultados y conclusiones: Se encontró que el modelo con mayor índice de masa corporal y mayor perímetro cervical tenía una tasa de fracaso en la localización de un 70%, empleando, además, mayor tiempo, comparado con el modelo de características estándares

Introduction: Cricothyrotomy is a recommended technique to restore oxygenation in most of guidelines for difficult airway management. A correct location of the cricothyroid membrane (CTM) is fundamental for a proper performance of the technique. Several studies have shown poor accuracy with the identification the CTM by palpation, resulting in a high failure rate of the technique. Objective: The aim of this study was to determine the impact of the patient's neck morphology on the accurate location of the CTM and on the time employed. Materials and method: Observational study in which anaesthesiologists and intensivists voluntarily participated in a simulation that consisted of a «cannot intubate, cannot oxygenate» scenario, where they had to locate the CTM, as soon as possible, in 2 selected male patients with different morphological characteristics of the neck. The time was measured from the beginning of CTM palpation to locating it with a marker. Results and Conclusions: A higher body mass index and a higher neck circumference correlated with a 70% location failure rate and with a longer time as compared with a standard model

Sinequia traqueal objetivada mediante fibrobroncoscopia flexible en inducción anestésica reglada para cirugía torácica / Tracheal synechia visualized in flexible fibrobronchoscopy in induction of anesthesia for thoracic surgery

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A randomized controlled trial evaluating general endotracheal anesthesia versus monitored anesthesia care and the incidence of sedation-related adverse events during ERCP in high-risk patients.

BACKGROUND AND AIMS: ERCP is a complex procedure often performed in patients at high risk for sedation-related adverse events (SRAEs). However, there is no current standard of care with regard to mode of sedation and airway management during ERCP. The aim of this study was to assess the safety of general endotracheal anesthesia (GEA) versus propofol-based monitored anesthesia care (MAC) without endotracheal intubation in patients undergoing ERCP at high risk for SRAEs. METHODS: Consecutive patients undergoing ERCP at high risk for SRAEs at a single center were invited to participate in this randomized controlled trial comparing GEA and MAC. Inclusion criteria were STOP-BANG score ≥3, abdominal ascites, body mass index ≥35, chronic lung disease, American Society of Anesthesiologists class >3, Mallampati class 4 airway, and moderate to heavy alcohol use. Exclusion criteria were preceding EUS, emergent ERCP, tracheostomy, unstable airway, gastric outlet obstruction or delayed gastric emptying, and altered foregut anatomy. The primary endpoint was composite incidence of SRAEs: hypoxemia, use of airway maneuvers, hypotension requiring vasopressors, sedation-related procedure interruption, cardiac arrhythmia, and respiratory failure. Secondary outcomes included procedure duration, cannulation success, in-room time, and immediate adverse events. RESULTS: Two hundred patients (mean age, 61.1 ± 13.6 years; 36.5% women) were randomly assigned to GEA (n = 101) or MAC (n = 99) groups. Composite SRAEs were significantly higher in the MAC group compared with the GEA group (51.5% vs 9.9%, P < .001). This was primarily driven by the frequent need for airway maneuvers in the MAC group. Additionally, ERCP was interrupted in 10.1% of patients in the MAC group to convert to GEA because of respiratory instability refractory to airway maneuvers (n = 8) or significant retained gastric contents (n = 2). There were no statistically significant differences in cannulation, in-room, procedure, or fluoroscopy times between the 2 groups. All patients undergoing GEA were successfully extubated in the procedure room at completion of ERCP, and Aldrete scores in recovery did not differ between the 2 groups. There were no immediate adverse events. CONCLUSION: In patients at high risk for SRAEs undergoing ERCP, sedation with GEA is associated with a significantly lower incidence of SRAEs, without impacting procedure duration, success, recovery, or in-room time. These data suggest that GEA should be used for ERCP in patients at high risk for SRAEs (Clinical trial registration number: NCT02850887.).

Periprocedural pulmonary aspiration: An analysis of medical malpractice cases and alleged causative factors.

RATIONALE AIMS AND OBJECTIVES: Pulmonary aspiration is a feared complication of anaesthesia that is associated with significant morbidity and mortality. Within the small existing body of literature on medical malpractice claims related to periprocedural aspiration, very little information is available regarding the case-specific factors that were alleged to contribute to each aspiration event. METHODS: This study searched an extensive nationwide database of medical malpractice claims and identified 43 relating to periprocedural pulmonary aspiration. RESULTS: The most common mechanism of causation cited in these claims (37%) was the failure to secure the airway with an endotracheal tube (ETT) when an elevated aspiration risk existed, most commonly because endotracheal intubation was not originally selected as part of the anaesthetic plan. The second most common alleged category of causation (33%) was the failure to perform a proper rapid-sequence induction and/or place a nasogastric tube (NGT) for decompression prior to induction. An equal amount of cases resulted in defendant versus plaintiff verdicts (44.2% each), while a settlement was reached in the remaining 11.6% of cases. CONCLUSION: These findings are generalizable to clinical practice improvement on a broader scale. They demonstrate the need to develop reliable, high-sensitivity tests for detecting elevated risk before clinicians can be expected to take special steps to protect susceptible patients, and they also show that medical malpractice can be alleged because of failure to uphold currently accepted standards of care even when the published evidence for those standards is weak. This study demonstrates that careful review of medical malpractice litigation can elucidate common contributory factors and facilitate improvements in clinical practice and decision-making.

Influence of anxiolytic premedication on vasovagal reactions and home readiness following outpatient intrathecal anaesthesia-A retrospective analysis.

BACKGROUND: Vasovagal reactions during application of intrathecal anaesthesia (IA) are associated with high anxiety levels. A high percentage of patients undergoing outpatient surgery suffer from anxiety. Anxiolytic premedication in day-surgery is suspected to delay recovery and discharge and is, therefore, not routinely used. The aim of this retrospective analysis was to detect the influence of anxiolytic premedication on the incidence of vasovagal reactions and time until discharge home. METHODS: Anaesthesia records of all patients undergoing outpatient surgery under low-dose IA from January 2008 to June 2017 were analysed. Incidences of vasovagal reactions with a decrease in blood pressure and/or heart rate and need for cardiovascular activating medications were documented. Patients were categorised as having received an anxiolytic premedication or not. The time from intrathecal injection of the local anaesthetic until readiness for discharge was recorded. RESULTS: The records of 2747 patients were analysed. One thousand two hundred and ninety-one of them received an anxiolytic premedication of 1-2 mg midazolam intravenously. Three hundred and fourteen patients had vasovagal incidents during application of IA (no premedication n = 217 [15.0%], premedication n = 97 [7.5%], P < 0.0001). Premedication did not prolong time to achieve readiness for discharge (mepivacaine: P = 0.5886, chloroprocaine: P = 0.1555). However, in the prilocaine group, premedication led to a significantly earlier achievement of readiness for discharge (P = 0.0002). CONCLUSION: Anxiolytic premedication significantly reduces the incidence of vasovagal reactions during the application of IA and does not affect time until readiness for discharge.

Resección de tumor traqueal / Tracheal tumor resection

Introducción: Los tumores primitivos de la tráquea son infrecuentes. Objetivo: Presentar la evolución de un paciente para resección de un tumor traqueal que ocluía el 95 por ciento de su luz. Caso Clínico: Disnea con tiraje supraesternal. No tolera el decúbito supino, presencia de tos y expectoración. Se le administró anestesia general endotraqueal convencional. Intubación con tubo No. 8. Se colocó en decúbito lateral izquierdo. Se procedió a realizar toracotomía. Con la tráquea abierta, el cirujano intubó el bronquio izquierdo con tubo No. 7. Se aspiraron secreciones, descendió la saturación de oxígeno. Se colocó sonda de levine en el pulmón derecho para oxigenación apneica con lo cual mejoró la saturación. En el pulmón ventilado se aplicó presión positiva al final de la espiración de 3 cm de agua con una fracción inspirada de oxígeno de 1. Luego de cerrada la pared posterior de la tráquea, se pasó una sonda nasogástrica a través del tubo colocado por vía orotraqueal. El cirujano fijó el extremo distal con una pinza. Se retiró el tubo orotraqueal inicial y se colocó un tubo 5.5 para intubar selectivamente el bronquio izquierdo por la boca y terminar la sutura de la tráquea y ambos bronquios. Terminado el procedimiento, se retiró el tubo y se ventilaron ambos pulmones. Conclusiones: La cirugía de tráquea impone un gran reto al anestesiólogo y al cirujano actuante, por lo que resultan imprescindibles las buenas relaciones del equipo de trabajo(AU)

Introduction: Primitive tumors of the trachea are rare. Objective: To present the evolution of a patient for removal of a tracheal tumor that occluded 95 percent of its light. Clinical case: Dyspnea with suprasternal retractions. No tolerance of supine decubitus, presence of cough and expectoration. The patient was administered conventional endotracheal general anesthesia. Intubation with tube number 8. The patient was placed in the left lateral decubitus position. A thoracotomy was performed. With the trachea open, the surgeon intubated the left bronchus with tube number 7. Secretions were aspirated, oxygen saturation decreased. A Levine tube was placed in the right lung for apneic oxygenation, which improved the saturation. In the ventilated lung, positive pressure was applied at the end of the expiration of 3 cm of water with an inspired fraction of oxygen of 1. After closing the posterior wall of the trachea, a nasogastric tube was passed through the tube placed via the orotracheal approach. The surgeon fixed the distal end with a clamp. The initial orotracheal tube was removed and a 5.5 tube was placed to intubate the left bronchus selectively through the mouth and complete the suture of the trachea and both bronchi. After the procedure, the tube was removed and both lungs were ventilated. Conclusions: The trachea surgery represents a great challenge for the anesthesiologist and the surgeon, a reason why good team working relations are essential(AU)

Changes in endotracheal tube intracuff pressure and air leak pressure over time in anesthetized Beagle dogs.

OBJECTIVE: To evaluate endotracheal tube intracuff pressure (Pcuff) changes over time and the effect of these changes on air leak pressure (Pleak). STUDY DESIGN: Prospective experimental study. ANIMALS: A group of nine healthy adult Beagle dogs. METHODS: In part I, in vitro measurements of Pcuff were recorded for 1 hour in eight endotracheal tubes subjected to four treatments: room temperature without lubricant (RT0L), room temperature with lubricant (RTWL), body temperature without lubricant (BT0L), and body temperature with lubricant (BTWL). In part II, nine dogs were endotracheally intubated and Pleak was evaluated at Pcuff of 25 mmHg. Subsequently, Pcuff was reset to 25 mmHg (baseline) and Pcuff measurements were recorded every 5 minutes for 1 hour. Subsequently, a second Pleak measurement was recorded at the current Pcuff. The data were analyzed using Wilcoxon signed-rank test, repeated measures anova and Mann-Whitney U test. RESULTS: In part I, Pcuff differed significantly between the RT0L and RTWL treatments at 5-60 minutes, and between the BT0L and BTWL treatments at 5-35, 55 and 60 minutes (p < 0.05). In part II, compared with baseline pressures, mean Pcuff decreased to <18 mmHg at 10 minutes and significant decreases were recorded at 15-60 minutes (Pcuff range: 10.0 ± 4.9 to 13.4 ± 6.3 mmHg, mean ± standard deviation). Significant differences were observed between the first and second Pleak measurements (p = 0.034). Pleak decreased in six of nine dogs, was not changed in two dogs and increased in one dog. CONCLUSIONS AND CLINICAL RELEVANCE: Significant decreases in Pcuff over time were measured. Pleak may decrease during anesthesia and increase the risk for silent pulmonary aspiration. The results indicate the need for testing Pcuff more than once, especially at 10 minutes after the onset of anesthesia.

Evaluación de los resultados de aprendizaje de un curso de introducción a la anestesiología basado en simulación clínica / Learning outcomes evaluation of a simulation-based introductory course to anaesthesia

Objetivo. Se han evidenciado más errores y menor seguridad de los pacientes durante el periodo de incorporación de los residentes. Se evaluaron los resultados de aprendizaje de las competencias de valoración y control de la vía aérea, y cateterización epidural tras un curso de introducción a la anestesiología basado en simulación clínica antes de comenzar las rotaciones. Material y método. Participaron 12 residentes de anestesiología. Se estudió la transferencia de las competencias aprendidas durante el curso a la clínica (variable principal). Se utilizó una rúbrica de 28 habilidades y comportamientos para evaluar la primera intubación supervisada en pacientes ASA I/II. La variable secundaria fue el grado de autoeficacia para realizar la cateterización epidural y se valoró mediante preguntas de autoevaluación. Se realizó una encuesta de satisfacción. Se describieron las variables cualitativas (método Wilson) y las numéricas con la media y la desviación estándar (tras la prueba de Shapiro-Wilk). Resultados. Durante la primera intubación en pacientes se encontró que el 75% de los participantes completaron más de 21 habilidades de valoración y control de la vía aérea de un total de 28. Doce fueron completadas por todos ellos y 5 por la mitad. Más del 83% de los participantes refirieron un alto grado de autoeficacia para la cateterización epidural. Todos los participantes recomendarían el curso. Conclusiones. El rendimiento de los residentes de anestesiología al realizar por primera vez en pacientes la valoración y control de la vía aérea, y el grado de autoeficacia para la cateterización epidural fueron elevados tras un curso intensivo de simulación al comenzar la residencia (AU)

Objective. An increased number of errors and reduced patient safety have been reported during the incorporation of residents, as this period involves learning new skills. The objectives were to evaluate the learning outcomes of an immersive simulation boot-camp for incoming residents before starting the clinical rotations. Airway assessment, airway control with direct laryngoscopy, and epidural catheterization competencies were evaluated. Material and method. Twelve first-year anaesthesiology residents participated. A prospective study to evaluate transfer of endotracheal intubation skills learned at the simulation centre to clinical practice (primary outcome) was conducted. A checklist of 28 skills and behaviours was used to assess the first supervised intubation performed during anaesthesia induction in ASA I/II patients. Secondary outcome was self-efficacy to perform epidural catheterization. A satisfaction survey was also performed. Results. Seventy-five percent of residents completed more than 21 out of 28 skills and behaviours to assess and control the airway during their first intubation in patients. Twelve items were performed by all residents and 5 by half of them. More than 83% of participants reported a high level of self-efficacy in placing an epidural catheter. All participants would recommend the course to their colleagues. Conclusions. A focused intensive simulation-based boot-camp addressing key competencies required to begin anaesthesia residency was well received, and led to transfer of airway management skills learned to clinical settings when performing for first time on patients, and to increased self-reported efficacy in performing epidural catheterization (AU)

Aislamiento pulmonar en pacientes con resecciones pulmonares previas: bloqueo lobular selectivo secuencial con bloqueador bronquial Fuji Uniblocker® / Lung isolation in patients with previous lung resections: Selective sequential lobar blockade using a Fuji Uniblocker® endobronchial blocker

El aislamiento pulmonar es obligado durante la cirugía torácica, al permitir la visualización y manipulación por parte del cirujano del pulmón intervenido. La aparición de hipoxemia durante el aislamiento pulmonar es habitual, y aún es más frecuente en aquellos pacientes con reserva funcional pulmonar disminuida. Presentamos 2 casos clínicos de pacientes con antecedentes de resección pulmonar previa izquierda (1.° lobectomía inferior izquierda y 2.° lobectomía inferior izquierda y segmentectomía del lóbulo superior izquierdo), en los que se realizó bloqueo lobular secuencial selectivo (BLSS), con BB Fuji Uniblocker® para la realización de resecciones atípicas de pulmón derecho (LSD, LM y LID). En nuestra experiencia la técnica fue satisfactoria, el campo quirúrgico fue óptimo y no registramos ningún tipo de complicación intra o postoperatoria derivada de su uso, pudiendo ser una alternativa al aislamiento pulmonar tradicional, en pacientes con función respiratoria comprometida (reserva funcional escasa o resecciones pulmonares previas) (AU)

Lung isolation is essential during thoracic surgery, as it allows the thoracic surgeon to visualise and work in the surgical field. The occurrence of hypoxaemia during lung isolation is common, and is even more so in patients with decreased pulmonary functional reserve. The clinical cases are presented of 2 patients with a history of left pulmonary resections (1st left lower lobectomy, 2nd left lower lobectomy and left upper lobe segmentectomy), in which sequential selective lobar blockade was performed with Fuji Uniblocker® endobronchial blocker for performing right lung atypical resections (right upper lobe, middle lobe, and right lower lobe). In our experience the technique was successful, the surgical field was optimal and no intra- or post-operative complications were found. This technique may be an alternative to traditional lung isolation in patients with compromised respiratory function (low functional reserve or previous contralateral lung resections) (AU)

A case of severe perioperative hypoxia in uncorrected tetralogy of fallot: anesthetic management / Caso de hipoxia perioperatoria grave en tetralogía de Fallot no corregida: tratamiento anestésico

Tetralogy of fallot (TOF) is one of the most common congenital heart disease (CHD) in children. With the development of pediatric surgery and intensive care units, increasing number of grown-up CHD patients are presenting for non-cardiac surgeries. Non-operated TOF patients suffer from chronic hypoxia and decreased pulmonary blood flow resulting in considerable alteration in the physiology. The optimal management of these patients, therefore, require a thorough understanding of the pathophysiology of the uncorrected TOF. We hereby report a case of successful management of a 10-year-old child with an uncorrected TOF posted for tibial external fixation device (AU)

La tetralogía de Fallot (TF) es una de las cardiopatías congénitas más habituales en niños. Con el desarrollo de la cirugía pediátrica y las unidades de cuidados intensivos cada vez se presentan más casos de pacientes adultos con cardiopatías congénitas para cirugías no cardíacas. Los pacientes con TF no operada padecen hipoxia crónica y un flujo sanguíneo pulmonar reducido, lo que supone una alteración considerable de la fisiología. El manejo óptimo de estos pacientes requiere, por tanto, un profundo conocimiento de la fisiopatología de la TF no corregida. El presente artículo expone el caso de tratamiento exitoso de un paciente de 10 años con TF no corregida intervenido con dispositivo de fijación externa tibial (AU)