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A paucity of data supports the use of transesophageal echocardiography (TEE) for bedside extracorporeal membrane oxygenation (ECMO) cannulation. Concerns have been raised about performing TEEs in patients with COVID-19. The authors describe the use and safety of TEE guidance for ECMO cannulation for COVID-19.Single-center retrospective cohort study.The study took place in the intensive care unit of an academic tertiary center.The authors included 107 patients with confirmed SARS-CoV-2 infection who underwent bedside venovenous ECMO (VV ECMO) cannulation under TEE guidance between May 2020 and June 2021.TEE-guided bedside VV ECMO cannulation.Patient characteristics, physiologic and ventilatory parameters, and echocardiographic findings were analyzed. The primary outcome was the number of successful TEE-guided bedside cannulations without complications. The secondary outcomes were cannulation complications, frequency of cannula repositioning, and TEE-related complications.TEE-guided cannulation was successful in 99% of the patients. Initial cannula position was adequate in all but 1 patient. Fourteen patients (13%) required cannula repositioning during ECMO support. Forty-five patients (42%) had right ventricular systolic dysfunction, and 9 (8%) had left ventricular systolic dysfunction. Twelve patients (11%) had intracardiac thrombi. One superficial arterial injury and 1 pneumothorax occurred. No pericardial tamponade, hemothorax or intraabdominal bleeding occurred in the authors' cohort. No TEE-related complications or COVID-19 infection of healthcare providers were reported during this study.Bedside TEE guidance for VV ECMO cannulation is safe in patients with severe respiratory failure due to COVID-19. No tamponade or hemothorax, nor TEE-related complications were observed in the authors' cohort.

This article highlights the ultrasonography machine as a machine that saves lives in the intensive care unit. We review its utility in the limited resource intensive care unit and some elements of machine design that are relevant to both the constrained operating environment and the well-resourced intensive care unit. As the ultrasonography machine can only save lives, if is operated by a competent intensivist; we discuss the challenges of training the frontline clinician to become competent in critical care ultrasonography followed by a review of research that supports its use.

Limited data exist on advanced critical care echocardiography (CCE) training programs for intensivists. We sought to describe a longitudinal echocardiography program and investigate the effect of distributed conditional supervision vs predefined en-bloc supervision, as well as the effect of an optional echocardiography laboratory rotation, on learners' engagement.In this mixed methods study, we enrolled critical care fellows and faculty from five University of Toronto-affiliated intensive care units (ICU) between July 2015 and July 2018 in an advanced training program, comprising theoretical lectures and practical sessions. After the first year, the program was modified with changes to supervision model and inclusion of a rotation in the echo laboratory. We conducted semistructured interviews and investigated the effects of curricular changes on progress toward portfolio completion (150 transthoracic echocardiograms) using a Bayesian framework.Sixty-five learners were enrolled and 18 were interviewed. Four (9%) learners completed the portfolio. Learners reported lack of time and supervision, and skill complexity as the main barriers to practicing independently. Conditional supervision was associated with a higher rate of submitting unsupervised echocardiograms than unconditional supervision (rate ratio, 1.11, 95% credible interval, 1.08 to 1.14). After rotation in the echocardiography laboratory, submission of unsupervised echocardiograms decreased.Trainees perceived lack of time and limited access to supervision as major barriers to course completion. Nevertheless, successful portfolio completion was related to factors other than protected time in the echocardiography laboratory or unconditional direct supervision in ICU. Further research is needed to better understand the factors promoting success of CCE training programs.RéSUMé: OBJECTIF: Il n’existe que peu de données sur les programmes de formation avancés en échocardiographie pour les soins intensifs (écho-USI) destinés aux intensivistes. Nous avons cherché à décrire un programme longitudinal d’échocardiographie et à étudier l’effet d’une supervision conditionnelle distribuée vs une supervision prédéfinie en bloc, ainsi que l’effet d’une rotation facultative en laboratoire d’échocardiographie, sur le niveau d’implication des apprenants. MéTHODE: Dans cette étude à méthodes mixtes, nous avons recruté des fellows en soins intensifs et des professeurs de cinq unités de soins intensifs (USI) affiliées à l’Université de Toronto entre juillet 2015 et juillet 2018 pour participer à un programme de formation avancée comprenant des conférences théoriques et des séances pratiques. Après la première année, le programme a été modifié en apportant des changements au modèle de supervision et en incluant une rotation dans le laboratoire d’écho. Nous avons mené des entretiens semi-structurés et étudié les effets des changements du programme d’études sur les progrès vers la réussite de la formation (150 échocardiogrammes transthoraciques) en utilisant un cadre bayésien. RéSULTATS: Soixante-cinq apprenants étaient inscrits et 18 ont été interviewés. Quatre (9 %) apprenants ont complété la formation. Les apprenants ont signalé que le manque de temps et de supervision ainsi que la complexité des compétences constituaient les principaux obstacles à une pratique autonome. La supervision conditionnelle était associée à un taux plus élevé de soumission d’échocardiogrammes non supervisés que la supervision inconditionnelle (ratio de taux, 1,11, intervalle crédible à 95 %, 1,08 à 1,14). Après la rotation dans le laboratoire d’échocardiographie, la soumission d’échocardiogrammes non supervisés a diminué. CONCLUSION: Les stagiaires ont perçu le manque de temps et l’accès limité à la supervision comme des obstacles majeurs à la réussite de la formation. Néanmoins, l’achèvement du cours était lié à des facteurs autres que le temps protégé au laboratoire d’échocardiographie ou la supervision directe inconditionnelle aux soins intensifs. D’autres recherches sont nécessaires pour mieux comprendre les facteurs favorisant le succès des programmes de formation en écho-USI.

Aims Echocardiography is critical in the management of patients supported with veno-arterial extracorporeal membrane oxygenation (V-A ECMO). This study aimed to identify the incidence of critical echocardiographic findings and determine their prognostic significance. Methods and results All available echocardiograms, hemodynamic variables and outcomes of patients with CS supported with V-A in the period of 2011-2018 at the Toronto General Hospital were retrospectively reviewed. Critical echocardiographic findings were defined as minimal to no left ventricular (LV) ejection, the presence of intra-cardiac clot, significant pericardial effusion and malpositioning of ECMO cannulae. 130 patients were included in this study with in-hospital mortality of 58.5%. Critical findings were most often seen in the first echocardiogram (42/121; 35%). The incidence of critical findings in the first echocardiogram was minimal to no LV ejection in 28 patients (23%), intracardiac thromboses in 8 patients (6.6%), tamponade in 5 patients (4%) and malpositioned cannulae in 1 patient (0.8%). Presence of a critical finding in the first study was associated with an odds ratio for in-hospital mortality of 2.32 (95% CI 1.01-5.06, P = 0.011). Conclusion The initial echocardiogram was most likely to demonstrate a critical finding of which the most common was minimal to no LV ejection. Critical echocardiographic findings carried prognostic significance for in-hospital mortality.

Point-of-care ultrasound has become an integral aspect of critical care training. The Bedside Assessment by Sonography In Critical Care Medicine Curriculum was established at the University of Toronto to train critical care trainees in basic echocardiography and general critical care ultrasound. During the coronavirus disease (COVID-19) pandemic, our program needed to adapt quickly to ensure staff safety and adherence to infection-control protocols. In this article, we share our experience and reflect on the challenges and benefits of shifting from a primarily in-person teaching model to a hybrid model of remote and in-person teaching. Curricular changes were threefold: the transition to entirely web-based interactive didactic teaching and online imaging interpretation modules, the recruitment of sonographers at multiple academic sites as instructors to facilitate in-person practices with lower instructor to trainee ratio, and the use of a mobile application for informal group case-based discussions. Challenges included lost opportunities for scanning healthy volunteers, variability in attendance at online lectures, and a lower number of study submissions for review. However, curricular changes enabled maintenance of directly observed practice, high levels of engagement with recorded content, and an expansion of our reach to a global audience. We believe that future curricula should combine high-quality online curriculum and resources with the ongoing in-person delivery of key elements of curriculum to allow for direct observation and feedback as well as the maintenance of self-directed point-of-care ultrasound portfolios.

Although cardiac tamponade remains a clinical diagnosis, echocardiography is an essential tool to detect fluid in the pericardial space. Interpretation of echocardiographic findings and assessment of physiologic and hemodynamic consequences of a pericardial effusion require a thorough understanding of pathophysiologic processes. Certain echocardiographic signs point toward the presence of cardiac tamponade: a dilated inferior vena cava (IVC), collapse of the cardiac chambers, an inspiratory bulge of the interventricular septum into the left ventricle (LV) (the "septal bounce"), and characteristic respiratory variations of Doppler flow velocity recordings. However, in certain circumstances (e.g., mechanical ventilation, post-surgical patients, and pulmonary hypertension), these echocardiographic signs can be missing, despite the presence of clinical tamponade. Failure to recognize a potentially life-threatening clinical condition due to the absence of corresponding echocardiographic findings can delay both diagnosis and life-saving treatment. Thus, in the context of critical care, echocardiography should only be used to confirm the presence of pericardial fluid or localized hematoma, and the diagnosis of tamponade should rely on clinical criteria.

The paradigm of supportive care of patients who are critically ill has changed significantly over the past 20 years. Patients on mechanical ventilation are no longer heavily sedated; the goal is a comfortable patient who can interact with health-care professionals and with their family members. Systematic, regular assessment of the patient for pain, anxiety, and sleep deprivation allows early recognition of these distressing symptoms. Appropriate treatment of patients' symptoms should be based on a multi-modal pharmacologic and non-pharmacologic approach. Early mobilization and avoidance of physical restraint are additional patient-centered goals. The presence of family members during daily rounds and at the bedside can reduce the distress of the patient and enhance communication with the health-care team. All of these changes have created new challenges and opportunities for the multidisciplinary health-care team. This review aimed to describe the main components of evidence-based supportive care of patients on mechanical ventilation, beyond the specific settings of the ventilator.

Purpose of review An increasing number of patients are placed on extracorporeal membrane oxygenation (ECMO) for respiratory or cardiac failure. Sound understanding of physiology and configuration of ECMO is essential for proper management. This review covers different monitoring parameters and tools for patients supported with different types of ECMO. Recent findings Emphasis is placed on monitoring saturations at different sites depending on type of ECMO support. The main monitoring tools detailed in this review are echocardiography and pulmonary artery catheters. Summary The review will help physicians better assess adequate ECMO support by using the appropriate parameters for each type of configuration.

Venoarterial (VA) and venovenous (VV) extracorporeal membrane oxygenation (ECMO) support is increasingly being used in recent years in the adult population. Owing to the underlying disease precipitating severe respiratory or cardiac failure, echocardiography plays an important role in the management of these patients. Nevertheless, there are currently no guidelines on the use of echocardiography in the setting of ECMO support. This review describes the current state of application of echocardiography for patients supported with both VA and VV ECMO.

Venoarterial (VA) and venovenous (VV) extracorporeal membrane oxygenation (ECMO) support is increasingly being used in recent years in the adult population. Owing to the underlying disease precipitating severe respiratory or cardiac failure, echocardiography plays an important role in the management of these patients. Nevertheless, there are currently no guidelines on the use of echocardiography in the setting of ECMO support. This review describes the current state of application of echocardiography for patients supported with both VA and VV ECMO. Electronic supplementary material The online version of this article (doi:10.1186/s13054-015-1042-2) contains supplementary material, which is available to authorized users.

Novel approaches to the management of acute respiratory distress syndrome include strategies to enhance alveolar liquid clearance, promote epithelial cell growth and recovery after acute lung injury, and individualize ventilator care on the basis of physiological responses. The use of extracorporeal membrane oxygenation (ECMO) is growing rapidly, and centers providing ECMO must strive to meet stringent quality standards such as those set out by the ECMONet working group. Prognostic tools such as the RESP score can assist clinicians in predicting outcomes for patients with severe acute respiratory failure but do not predict whether ECMO will enhance survival. Evidence continues to grow that novel modes of mechanical ventilation such as neurally adjusted ventilatory assist are feasible and improve patient physiology and patient-ventilator interaction; data on clinical outcomes are limited but supportive. Critical illness causes long-term psychological and function sequelae: the risk of a new psychiatric diagnosis and severe physical impairment is significantly increased in the months after discharge from the intensive care unit. These long-term effects might be amenable to changes in sedation practice and increased early mobilization. Daily sedation discontinuation enhances the validity of routine delirium assessment. Many critically ill patients merit assessment by palliative care clinicians; the demand for palliative care services among critically ill patients is expected to grow. Future trials to test therapies for critical illness must ensure that study designs are adequately powered to detect benefit using realistic event rates. Integrating "big data" approaches into treatment decisions and trial designs offers a potential means of individualizing care to enhance outcomes for critically ill patients.

OBJECTIVE: In an attempt to refine the indications for liver resection (LR) for highly symptomatic polycystic liver disease (PLD), we focused on the characteristics, technical difficulties, postoperative outcome, and long-term follow-up of PLD patients who underwent either LR or liver transplantation (LT). METHODS: Since 1995, among 72 patients with massive hepatomegaly, 45 patients underwent LR associated with contralateral cyst fenestration whereas 27 underwent LT associated with simultaneous kidney transplantations in 23. The LR group was characterized by absence of end-stage renal insufficiency, absence of ascites, and better nutrition status. In the LR group, the volumetry of the spared noncystic parenchyma was preoperatively assessed whereas pathological analysis focused on fibrosis and vascular congestion. RESULTS: After LR, the mortality was nil and overall morbidity was 71%, including biliary leak in 20% and ascites in 42%. Persistent and massive ascites was observed in 8 patients who have undergone extensive resection and had significantly more frequently fibrosis on the analysis of their resected surgical specimens (P = 0.002). A volume of the remnant noncystic parenchyma less than 30% and the presence of vascular changes on the specimen were associated with higher risk of complications. The 5-year survival was 95% and among the 43 survivors, after a mean follow-up of 41 months, 36 (83%) patients stated that they were satisfied, with complete relief of symptoms in 30 (70%). After LT, the postoperative mortality was 15% and the overall morbidity was 85%, including 12 patients who required reoperation. Severe complications were more frequent in the presence of denutrition and preoperative ascites. The 5-year survival was 85% and after a mean follow-up of 36 months all survivors had complete relief of symptoms due to hepatomegaly. CONCLUSIONS: In case of massive hepatomegaly from PLD without end-stage renal failure, LR should be considered first when preserved remnant liver volume represents at least 30% of the total volume liver in the absence of vascular changes or fibrosis.

Purpose To provide consensus, and a list of experts’ recommendations regarding the basic skills for head-to-toe ultrasonography in the intensive care setting. Methods The Executive Committee of the European Society of Intensive Care (ESICM) commissioned the project and supervised the methodology and structure of the consensus. We selected an international panel of 19 expert clinicians–researchers in intensive care unit (ICU) with expertise in critical care ultrasonography (US), plus a non-voting methodologist. The panel was divided into five subgroups (brain, lung, heart, abdomen and vascular ultrasound) which identified the domains and generated a list of questions to be addressed by the panel. A Delphi process based on an iterative approach was used to obtain the final consensus statements. Statements were classified as a strong recommendation (84% of agreement), weak recommendation (74% of agreement), and no recommendation (less than 74%), in favor or against. Results This consensus produced a total of 74 statements (7 for brain, 20 for lung, 20 for heart, 20 for abdomen, 7 for vascular Ultrasound). We obtained strong agreement in favor for 49 statements (66.2%), 8 weak in favor (10.8%), 3 weak against (4.1%), and no consensus in 14 cases (19.9%). In most cases when consensus was not obtained, it was felt that the skills were considered as too advanced. A research agenda and discussion on training programs were implemented from the results of the consensus. Conclusions This consensus provides guidance for the basic use of critical care US and paves the way for the development of training and research projects. Supplementary Information The online version contains supplementary material available at 10.1007/s00134-021-06486-z.