Extracorporeal support in airway surgery

Innovative Approaches in Tracheal Resection and Anastomosis Surgery: Integrating Extracorporeal Membrane Oxygenation for Enhanced Safety

PURPOSE

Tracheal resection with end-to-end anastomosis (TREE) has many advantages over conservative treatment in terms of long-term results; however, this method requires improved safety and accessibility. We aimed to combine expanded venovenous extracorporeal membrane oxygenation (ECMO) during TREE surgery.

MATERIALS AND METHODS

Between May 2006 and December 2022, 41 patients diagnosed with tracheal stenosis or tracheal tumors underwent TREE. The non-ECMO and ECMO groups were classified based on the presence or absence of intraoperative ECMO support.

RESULTS

Reconstruction length was slightly longer in the ECMO group than in the non-ECMO group, but there was no statistical significance (p=0.082). There was no significant difference between the two groups in terms of operative time (p=0.698), estimated blood loss (p=0.210), and duration of mechanical ventilation (p=0.713). There was a significant difference in intensive care unit stay between the two groups (p=0.013) due to the postoperative maintenance of ECMO. There were no cases of early mortality in either group during hospitalization (p>0.999).

CONCLUSION

ECMO support could assist in more challenging cases as it makes surgery easier in difficult patient scenarios.

[Extracorporeal Life Support in Lung Transplantation and Beyond]

Lung transplantation is often the sole and final therapeutic option for patients with end-stage lung disease. In recent years, clinical outcomes have steadily improved, driven in part by advancements in extracorporeal mechanical support. These techniques have become an integral component of routine clinical practice, particularly in lung transplantation centres. Extracorporeal lung support systems range from relatively simple pumpless devices to complex cannulation techniques and device configurations. In particular, extracorporeal membrane oxygenation (ECMO) encompasses various configurations widely utilised in thoracic surgery, especially in lung transplantation. A distinction can be made between preoperative ECMO, referred to as bridge-to-transplant, and intraoperative ECMO support, which is employed during the transplantation procedure. In recent years, intraoperative ECMO has largely replaced the traditional heart-lung machine. Additionally, ECMO plays a critical role in the immediate postoperative period, both in preventing and managing primary graft dysfunction. Beyond lung transplantation, extracorporeal life support systems are also applied in complex thoracic surgical resections and procedures involving the central airways. In the future, technical advancements and improvements in treatment protocols are expected to further enhance the role of extracorporeal mechanical support in the management of thoracic surgical patients.

Benefits of prophylactic veno-arterial extracorporeal membrane oxygenation for high-risk cardiac interventions

BACKGROUND

Complex high-risk percutaneous coronary intervention (PCI) and transcatheter aortic valve implantation (TAVI) are challenging and frequently associated with life-threatening complications. We evaluated the benefits of prophylactic extracorporeal membrane oxygenation (ECMO)-supported interventions and the risks of this approach.

METHODS

From March 2020 to September 2021, 11 patients underwent TAVI, and 15 patients underwent PCI supported with prophylactic ECMO. Clinical characteristics and outcomes in terms of the requirement of ECMO were evaluated.

RESULTS

Cannulation was femoro-femoral in all patients. TAVI was performed via transfemoral access. In the TAVI group, mean patient age was 72 ± 7.84 years and 63.64% were male. During valve implantation, supportive ECMO flow was maintained at 3.24 ± 0.19 L/min. The additional median time in the ICU was 2 (1-4) days. Patients were discharged from the hospital after 16 (15-27) days. All of them were successfully weaned off V-AECMO. Only 1 patient died of respiratory and cardiac arrest 10 days after the operation. During PCI, ECMO flow was maintained at 3.35 ± 0.22 L/min. The average age of the patients in this group was 59 ± 10.80 years, and the ejection fraction was 42.59 ± 16.34%. Fourteen patients were successfully weaned off veno-arterial ECMO and survived to hospital discharge. No ECMO-related, peripheral cannulation-related or life-threatening bleeding complications were observed in the two groups. The median follow-up was 6 months, and there was 1 late death.

CONCLUSION

Based on this experience, we consider ECMO support to be a viable alternative and effective approach for complex high-risk cardiac interventions.

Congenital Tracheal Stenosis With Complete Cartilage Rings: Proposal of A Multidisciplinary and Tailored Surgical Approach

INTRODUCTION

Congenital Tracheal Stenosis (CTS) with complete cartilaginous rings is a rare but potentially life-threatening condition in paediatric patients. Currently, the most common approach is slide tracheoplasty (ST) with sternotomy under cardiopulmonary bypass (CPB). Intending to make the procedure less invasive and consider the variety of associated conditions, we have tailored the approach to our patients, who were treated by a multidisciplinary airway team.

METHODS

Patients with CTS treated surgically between 2012 and 2022 at Gaslini Institute were enrolled. Preoperative, surgical and postoperative details were collected and analysed retrospectively. All patients had angio-computerized tomography (CT) scan, echocardiography and bronchoscopy with bronchography before surgery. Each patient and each procedure have been discussed at Airway Team meetings.

RESULTS

Among 20 patients with CTS, 15 underwent ST and 5 tracheal resection and anastomosis (TRA). 60 % were younger than 12 months. 30 % patients had previous tracheal/cardiac surgery. Combined cardiac surgery was performed in 8 patients. 4 patients were approached with cervicotomy and extracorporeal membrane oxygenation (ECMO). Mortality within 30 days was 5 %. 8 patients (40 %) needed endoscopic dilatation after the surgery and 1 underwent revision surgery. No patient had tracheostomy after the surgery. We did not find a higher rate of mortality and morbidity in patients who had cervicotomy and ECMO.

CONCLUSION

We propose a multidisciplinary and tailored approach for patients with CTS. After evaluating each patient through detailed preoperative studies, including bronchography, the team can choose alternatives to the traditional ST under CPB, such as TRA, cervical approach, and ECMO.

LEVEL OF EVIDENCE

Level IV.

TYPE OF STUDY

Original Article.

Extended Tracheal Resection: Carinal Resections

Carinal resection is defined as the resection of tracheal-bronchial bifurcation with or without associated lung resection. It is usually indicated in case of primary tumors with limited involvement of the carina. The reported mortality ranges from 3% to 20% in high-volume centers. The surgical approach depends on the location of the lesion. Surgery for carinal pathology is technically difficult and the development of anastomotic complications such as devascularization, separation, and stenosis may be directly related to surgical technique.

Management of Primary Tracheal Tumors

The diagnosis and treatment of patients with tracheal tumors is challenging due to the low incidence of these tumors. A precise diagnostic work-up and experience is necessary to distinguish between patients amenable to surgery and nonsurgical patients. An individualized treatment concept should be established for each patient in a multidisciplinary team and ranges from interventional removal of benign lesions to multimodal strategies in patients with extended malignant tumors. Early diagnosis despite unspecific symptoms and complete resection are crucially important to achieve long-term survival.

The role of extracorporeal membrane oxygenation in thoracic anesthesia

PURPOSE OF REVIEW

Circulatory and respiratory support with extracorporeal membrane oxygenation (ECMO) has gained widespread acceptance during high-end thoracic surgery. The purpose of this review is to summarize the recent knowledge and give an outlook for future developments.

RECENT FINDINGS

A personalized approach of ECMO use is state of the art for monitoring during surgery. Personalization is increasingly applied during anesthesia for high-end surgery nowadays. This is reflected in the point of care testing (POCT) for anticoagulation and cardiac function during surgery on ECMO combining specific patient data into tailored algorithms. For optimizing protective ventilation MP (mechanical power) is a promising parameter for the future. These personalized methods incorporating numerous patient data are promising for the improvement of morbidity and mortality in high-end thoracic surgery. However, clinical data supporting improvement are not available to date but can be awaited in the future.

SUMMARY

Clinical practice during surgery on ECMO is increasingly personalized. The effect of personalization on morbidity and mortality must be examined in the future. Undoubtedly, an increase in knowledge can be expected from this trend towards personalization.

[Extracorporeal Membrane Oxygenation in Complex Tracheobronchial Surgery: A Series Case Reports and Systematic Review]

Airway management in complex tracheobronchial surgery (TBS) remains a challenge in thoracic surgery. The use of extracorporeal membrane pulmonary oxygenation (ECMO) in thoracic surgery is rather rare, except for lung transplantation. To report the safety and efficacy of ECMO in complex TBS, a total of 5 patients with tracheobronchial and bronchial reconstructive surgery supported by ECMO in the Department of Thoracic Surgery of Tangdu Hospital, Air Force Medical University from May 2019 to June 2024 were collected. Among them, 4 cases of tracheal tumor (including long-segment trachea resection and reconstruction, or carinal resection and reconstruction) and 1 case of acute airway obstruction caused by tracheal rupture were included, all of which were performed in veno-venous ECMO (V-V ECMO) mode. Systemic heparinization was used in 2 patients, and anticoagulation was not performed in 3 patients, which were maintained only by ECMO heparin-coated lines. 4 patients recovered well after surgery, and 1 patient died 1 month after surgery due to immune-related pneumonia. For complex TBS, or in emergency situations (tracheal stenosis with risk of asphyxiation), ECMO can provide adequate support and safeguard.
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Extracorporeal membrane oxygenation for general thoracic surgery: case series and narrative review

Background and Objective

Extracorporeal membrane oxygenation (ECMO) has historically been utilized as a temporary life support option for patients with severe cardiac and pulmonary dysfunction. Recent advancements have enabled the safe application of ECMO in a wider variety of patients; we present a review of its use in patients undergoing general thoracic procedures supported by a case series at our institution.

Methods

We review current literature focusing on ECMO applications in thoracic surgery outside of the traditional use. Additionally, we offer three cases of ECMO utilization to illustrate success stories and key lessons learned regarding the use of ECMO in general thoracic surgery.

Key Content and Findings

Technologic advancements and enhanced safety profiles have enabled the safe application of ECMO in a wide array of patients far beyond the historic indications of cardiogenic shock and acute respiratory distress syndrome (ARDS). It is now feasible to consider ECMO for management of acute thoracic emergencies, as well as to better facilitate operative safety in complex general thoracic surgical procedures. Both venovenous and venoarterial ECMO can be utilized in carefully selected patients to provide cardiopulmonary support while enabling improved visualization and increased mobilization without concern for respiratory and/or cardiac compromise.

Conclusions

Enthusiasm for the use of ECMO has increased in recent years. What was once considered a salvage therapy in cases of life-threatening cardiopulmonary decompensation now plays an increasingly important role in the safe conduct of complex thoracic surgery procedures, provides much needed time for organ recovery, and offers acute resuscitation options. This shift broadens our ability to deliver life-saving care to patients that previously would have otherwise had limited treatment options.

Case Report: ECMO-assisted tracheal reconstruction in a 30-week-gestation preterm infant with tracheal stenosis

Tracheal stenosis is a rare but life-threatening disease in preterm infants. Misdiagnosis as congenital tracheal stenosis is common, making surgical management challenging. This report presents a case of a preterm infant with tracheal stenosis and congenital heart malformation treated with ECMO-assisted tracheal resection and end-to-end anastomosis. A male infant was born at 30 weeks of gestation with severe asphyxia, cardiac insufficiency, and pneumonia. Following failed medical treatment, fiberoptic bronchoscopy confirmed mid-tracheal to carinal stenosis. After a 2-week treatment course, ECMO-assisted tracheal resection and end-to-end anastomosis were performed successfully. This case confirms the feasibility of tracheal resection and end-to-end anastomosis in low-weight, preterm infants with tracheal stenosis born at 30 weeks gestation. The utilization of ECMO for oxygenation during surgery provides a clear surgical field and shorter operating time. Surgical intervention may be necessary for neonatal tracheal stenosis depending on the clinical presentation.

Veno-venous extra-corporeal membrane oxygenation in complex tracheobronchial resection

Background

Elective extra-corporeal membrane oxygenation (ECMO) is rarely used in thoracic surgery, apart from lung transplantation. The purpose of this study was to summarize our institutional experience with the intraoperative use of veno-venous (VV) ECMO in selected cases of main airway surgery.

Methods

We retrospectively analyzed the data of 10 patients who underwent main airway surgery with the support of VV-ECMO between June 2013 and August 2022.

Results

Surgical procedures included: three carinal resection and reconstruction with complete preservation of the lung parenchyma, one right upper double-sleeve lobectomy and hemi-carinal resection, and one sleeve resection of the left main bronchus after previous right lower bilobectomy, for thoracic malignancies; four tracheal/carinal repair for extensive traumatic laceration; one extended tracheal resection due to post-tracheostomy stenosis in a patient who had previously undergone a left pneumonectomy. The median intraoperative VV-ECMO use was 162.5 minutes. In three cases with complex resection and reconstruction of the carina and in one case of extended post-tracheostomy stenosis and previous pneumonectomy, high-flow VV-ECMO allowed interruption of ventilation for almost 3 hours. In four patients, VV-ECMO was prolonged in the postoperative period to ensure early extubation. There were no perioperative deaths, no complications related to the use of ECMO and no intraoperative change in the planned type of ECMO. Significant complications occurred only in one patient who developed a small anastomotic dehiscence that led to stenosis and required placement of a Montgomery tube. At the median follow-up of 30 months, all 10 patients were still alive.

Conclusions

The use of intraoperative VV-ECMO allows safe and precise performance of main airway surgery with minimal postoperative morbidity in patients requiring complex resections and reconstructions and in cases that cannot be managed with conventional ventilation techniques.

Treatment of malignant airway stenosis with extracorporeal membrane oxygenation under low-dose anticoagulation: A case report

The occurrence of airway obstruction due to severe stenosis from lung cancer poses a significant risk of asphyxia. Although the placement of a metallic stent may relieve the obstruction, the procedure is associated with a high risk of asphyxia. To mitigate this risk, extracorporeal membrane pulmonary oxygenation (ECMO) has been proposed to temporarily substitute for cardiopulmonary function during the procedure. However, the use of systemic anticoagulation with heparin during ECMO may increase the likelihood of bleeding during surgery. This case report describes a successful treatment of a patient with malignant central airway obstruction through low-dose heparin veno-venous ECMO. This approach resulted in reduced intraoperative bleeding and invasive operation time, allowing for prompt postoperative withdrawal and recovery.

Extracorporeal life support use in limited lung function: a narrative review

Background and Objective

In thoracic surgery, different modalities of extracorporeal life support (ECLS) can be used for cardiorespiratory support in complex scenarios. Decades of learning in clinical practice and physiology associated with technological development led to a great variety of ECLS technologies available. Thoracic surgery procedures with difficult or impossible single lung ventilation may still be performed using different ECLS modalities. The aim of this review is to describe the use of ECLS, with its different modalities, as a solution to perform complex surgeries in a patient with difficult or impossible single lung ventilation.

Methods

A literature review was conducted using the terms "extracorporeal life support pulmonary resection" and "extracorporeal life support thoracic surgery", and articles were selected according to defined criteria.

Key Content and Findings

To support lung function during thoracic surgery, the most efficient and popular variety of ECLS is venovenous extracorporeal membrane oxygenation. Lung resection on a single lung after pneumonectomy, surgery in a patient with severe hypercapnia and/or low respiratory reserve, carinal and airway surgery, and severe thoracic trauma are the main examples of situations where ECLS may be the solution to provide a safe surgical environment in patients who cannot tolerate single lung ventilation. Multidisciplinarity, selection of patients and careful surgical planning are cornerstones in defining the situations that may benefit from ECLS support.

Conclusions

Knowledge on techniques of ECLS are essential for every thoracic surgeon. Although rarely used, these techniques of cardiorespiratory support should be considered when planning complex cases with difficulties in ventilation and emergent situations.

Current use of extracorporeal life support in airway surgery: a narrative review

BACKGROUND AND OBJECTIVE

Extracorporeal life support (ECLS) is widely used in patients with severe respiratory or cardiocirculatory failure. The most commonly used extracorporeal membrane oxygenation (ECMO) modes are veno-venous (V-V) and veno-arterial (V-A) ECMO, which can both be achieved by various types of vascular cannulation. Within the scope of tracheobronchial surgery, intraoperative ECLS may occasionally be necessary to provide sufficient oxygenation to a patient throughout a procedure, especially when conventional ventilation strategies are limited. Additionally, V-A ECMO can provide cardiopulmonary support in emergencies and in cases where hemodynamic instability can occur.

METHODS

This narrative literature review was carried out to identify the use and the specifics of ECLS in airway surgery over the last years. Data from 168 cases were summarized according to the indication for surgery and the mode of ECLS (V-V, V-A).

KEY CONTENT AND FINDINGS

The most common tracheobronchial pathologies in which support was needed were: primary malignant disease of the airways, malignant infiltration, tracheal stenosis, injury of the airway, and congenital airway disease. With increasing experience in ECLS, the number of reported cases performed with intraoperative ECLS increased steadily over the last decade.

CONCLUSIONS

A trend favoring the use of V-V ECMO over V-A ECMO was identified. These approaches should now be considered indispensable tools for managing challenging surgical cases.

Extracorporeal life support in thoracic emergencies-a narrative review of current evidence

BACKGROUND AND OBJECTIVE

Resuscitative therapies for respiratory and cardiac failure are lifesaving and extended by using extracorporeal life support (ECLS) as mechanical circulatory support (MSC). This review informs the debate to identify the life-threatening thoracic emergencies in which patients may be cannulated for ECLS support.

METHODS

An advanced search was performed in PubMed, Embase, Google Scholar, and references query, assessed in June 2022, identified 761 records. Among them, 74 publications in English were included in the current narrative review.

KEY CONTENT AND FINDINGS

ECLS is an additional tool for organ support in life-threatening thoracic emergencies. It provides bridging to recovery or to decision about destination as definitive therapy, intervention, or surgery. Non-traumatic emergencies include mediastinal mass, acute lung injury (ALI), aspiration, embolisms, acute and chronic heart failure. However, based on the current evidence, trauma, and especially blunt thoracic trauma, is one of the main indications for ECLS use in thoracic emergencies, among others in chest wall fractures, blunt and penetrating lung injuries. ECLS use is always individualized to patient's needs, injury pattern and kind of organ failure, circulatory arrest inclusive, depending on if respiratory or cardiac and circulatory support is needed. Further, ECLS offers the possibility for fast volume resuscitation and rewarming, thus preventing the lethal of trauma: hypothermia, hypoperfusion and acidosis. Anticoagulation may be omitted for some hours or days. Interdisciplinary cooperation between the intensivists, surgeons, anesthesiologists, emergency medical services, an appropriately organized and trained staff, equipment resources and logistical planning are essential for successful outcomes.

CONCLUSIONS

ECLS use in selected life-threatening thoracic emergencies is increasing. The summarized findings appeal to policymakers, and we hope that our summary of recommendations may impact clinical practice and research.

[Management of Tracheobronchial Stenoses]

Tracheobronchial stenoses consist of a spectrum of conditions that may result in focal or diffuse narrowing of the trachea or downstream bronchial system. The purpose of this paper is to provide an overview of the most commonly encountered conditions in terms of diagnosis and therapeutic options as well as the associated challenges for practitioners.

Tracheostomy and venovenous extracorporeal membrane oxygenation for difficult airway patient with carinal melanoma: A case report and literature review

BACKGROUND

Anesthesia for tracheal tumor resection is challenging, particularly in patients with a difficult upper airway. We report a case of a difficult upper airway with a metastatic tracheal tumor causing near-total left bronchial obstruction and requiring emergency tracheostomy and venovenous extracorporeal membrane oxygenation (VV-ECMO) support for rigid bronchoscopy-assisted tumor resection.

CASE SUMMARY

A 41-year-old man with a history of right retromolar melanoma treated by tumor excision and myocutaneous flap reconstruction developed progressive dyspnea on exertion and syncope episodes. Chest computed tomography revealed a 3.0-cm tracheal mass at the carinal level, causing 90% tracheal lumen obstruction. Flexible bronchoscopy revealed a pigmented tracheal mass at the carinal level causing critical carinal obstruction. Because of aggravated symptoms, emergency rigid bronchoscopy for tumor resection and tracheal stenting were planned with standby VV-ECMO. Due to limited mouth opening, tracheostomy was necessary for rigid bronchoscopy access. While transferring the patient to the operating table, sudden desaturation occurred and awake fiberoptic nasotracheal intubation was performed for ventilation support. Femoral and internal jugular vein were catheterized to facilitate possible VV-ECMO deployment. During tracheostomy, progressive desaturation developed and VV-ECMO was instituted immediately. After tumor resection and tracheal stenting, VV-ECMO was weaned smoothly, and the patient was sent for intensive postoperative care. Two days later, he was transferred to the ward for palliative immunotherapy and subsequently discharged uneventfully.

CONCLUSION

In a difficult airway patient with severe airway obstruction, emergency tracheostomy for rigid bronchoscopy access and standby VV-ECMO can be life-saving, and ECMO can be weaned smoothly after tumor excision. During anesthesia for patients with tracheal tumors causing critical airway obstruction, spontaneous ventilation should be maintained at least initially, and ECMO deployment should be prepared for high-risk patients, such as those with obstructive symptoms, obstructed tracheal lumen > 50%, or distal trachea location.

Successful extracorporeal membrane oxygenation in a patient with central airway obstruction due to an endotracheal mass

Extracorporeal membrane oxygenation (ECMO) assists blood circulation and gas exchange via a heart–lung machine. ECMO is used mainly in intensive care units as bridging therapy until heart and respiratory failure can be addressed or until transplantation can be performed. ECMO is sometimes used during surgery under general anaesthesia, depending on the patient’s underlying diseases and the nature of the operation. If the oxygen supply and carbon dioxide removal capacity are limited, venovenous (VV)-ECMO can be helpful. Here, we describe the use of VV-ECMO for surgical resection of an endotracheal mass through rigid bronchoscopy in a patient who developed decompensating dyspnoea due to central airway obstruction (CAO).

Successful treatment with femoro-femoral venovenous extracorporeal membrane oxygenation in traumatic tracheal injury: a case report

Background

Traumatic tracheal injury is a rare type of trauma. In this type of injury, catastrophes may occur owing to a failure to secure the patient's airway. Extracorporeal membrane oxygenation (ECMO) is rescue therapy available for the treatment of urgent cardiorespiratory distress until the patient's vital signs have stabilized. The various applications of ECMO configurations have expanded the scope for this therapy.

Case presentation

We describe the case of a 66-year-old man with tracheal rupture with thyroid cartilage fracture due to cultivator handle who was treated with veno-venous ECMO. This case reflects the role and limitations of veno-venous ECMO, in which patient survival was possible with a bi-femoral configuration while also ensuring a clear airway.

Conclusion

We shared our experience with bi-femoral veno-venous ECMO as a therapeutic option to contribute to choosing an appropriate approach. Based on our review of the literature, the present case was an uncommon report of survival after tracheal rupture due to trauma without other complications.

Supplementary Information

The online version contains supplementary material available at 10.1186/s13019-022-01991-8.

First Use of a Novel Extracorporeal Life Support System: Successful Application in Tracheoesophageal Fistula Repair

Extracorporeal life support, commonly referred to as extracorporeal membrane oxygenation (ECMO), is indicated when conventional medical and surgical measures fail to support a patient during cardiac or respiratory failure. Increased use of ECMO in recent years has led to innovation that has improved safety in appropriate candidates. This has resulted in the application of novel approaches to complex surgical problems. Herein, we describe a simple, novel, and new-to-market ECMO circuit used for successful perioperative veno-venous ECMO support of a patient undergoing complex repair of a tracheoesophageal fistula. We believe that this circuit and its use for intra-and post-operative extracorporeal support provides a framework for safe and simple ECMO support in the future, including perioperative support for patients undergoing complicated and challenging thoracic procedures.

Anesthesia for pediatric rigid bronchoscopy and related airway surgery: Tips and tricks

Bronchoscopy-guided diagnostic and interventional airway procedures are gaining in popularity and prominence in pediatric surgery. Many of these procedures have been used successfully in the adult population but have not been used in children due to a lack of appropriately sized instruments. Recent technological advances have led to the creation of instruments to enable many more diagnostic and therapeutic procedures to be done under bronchoscopic guidance. These procedures vary significantly in their length and invasiveness and require vastly different anesthetic plans that must be easily adapted to situational and procedural changes. In addition to close communication between the anesthesiology and procedural teams; an understanding of the type of procedure, anesthetic requirements, and potential patient risks is paramount to a successful anesthetic. This review will focus on new rigid bronchoscopic procedures, goals for their respective anesthetic management, and unique tips and trick for how to maintain adequate oxygenation and ventilation in each scenario.

Venovenous extracorporeal membrane oxygenation-assisted tracheobronchial surgery: a retrospective analysis and literature review

Background

Airway management in tracheobronchial surgeries, especially carinal resection and reconstruction, remains one of the greatest challenges to thoracic surgeons. This study investigated the safety and effectiveness of venovenous extracorporeal membrane oxygenation (VV-ECMO) for respiratory support during tracheobronchial surgeries.

Methods

The data of patients who underwent VV-ECMO-assisted tracheobronchial surgeries at the Shanghai Chest Hospital from August 2006 to August 2021 were retrospectively reviewed. The clinicopathological, perioperative, and follow-up outcomes were analyzed.

Results

A total of 7 patients (4 males and 3 females) with a median age of 56 years (range, 11–70 years) were included in the study. The following tracheobronchial surgeries were conducted: carinal resection and reconstruction with complete pulmonary parenchyma preservation (n=4), left main bronchus and hemi-carinal sleeve resection (n=1), right upper sleeve lobectomy and hemi-carinal resection (n=1), and tracheal resection and reconstruction (n=1). The mean time on VV-ECMO was 167.7±65.8 min, and the mean operative time was 192.4±55.0 min. The average estimated blood loss was 271.4±125.4 mL. No perioperative death or reimplantation of VV-ECMO occurred. Postoperative complications were observed in 2 patients, including 1 case of respiratory failure due to preoperative severe chronic obstructive pulmonary disease (COPD) and 1 case of chylothorax. The median hospital stay was 11 days (range, 7–46 days). The median follow-up time was 30 months (range, 21–33 months). All the patients remained alive, and no postoperative readmission occurred during the follow-up period.

Conclusions

VV-ECMO is a safe and feasible ventilation mode when intraoperative oxygen saturation cannot be well maintained during tracheobronchial surgery.

Extracorporeal lung support for tracheoesophageal fistula surgical repair with free flap

Tracheoesophageal fistula results in persistent leakage of saliva into the trachea, prevents oral feeding, and predisposes to aspiration pneumonia. Large fistula closure may require a free flap to cover the defect. When the defect involves the tracheal area between the neck and the mediastinum, a tubeless field for optimal exposure can be advantageous. This article reports the use of veno-venous extracorporeal lung support, a known safe and efficient technique to support the patient's respiratory function, for this purpose. The typical veno-venous extracorporeal lung support setting includes a femoro-jugular bypass. The patient cases reported here had characteristics that precluded the use of the jugular vein, such as neck radiation dermatitis, previous radical neck dissection, and poor accessibility. Therefore a more rarely described femoro-femoral approach was used. The cases of three patients with persistent tracheoesophageal fistula who had free flap surgeries (two bi-paddled radial forearm free flap and one latissimus dorsi muscle free flap) assisted by femoro-femoral veno-venous extracorporeal lung support are reported.

[Surgical treatment of bilateral metachronous primary multiple non-small cell lung cancer using extracorporeal membrane oxygenation]

Lung surgeries following pneumonectomy using veno-venous extracorporeal membrane oxygenation (V-V ECMO) are described in the literature. The authors report a 62-year-old man with bilateral metachronous primary multiple lung cancer after previous extended lower lobectomy combined with sublobar resection of the upper lobe for squamous cell carcinoma of the left lung. Despite satisfactory functional status and heart function, the patient had poor lung function. Therefore, we decided to increase safety of resection using extracorporeal respiratory support. Extended right lower lobectomy was carried out under V-V ECMO. Surgery was followed by intrapleural bleeding that required urgent surgical hemostasis with completion of perioperative V-V ECMO. Postoperative ventilation lasted for 33 days but the patient was discharged later in a satisfactory condition.

Perioperative, protective use of extracorporeal membrane oxygenation in complex thoracic surgery

BACKGROUND

Extracorporeal membrane oxygenation (ECMO) is increasingly used in patients undergoing complex thoracic surgical procedures. However, studies reporting the clinical outcomes of these patients are limited to case reports, without real consensus. Our aim was to evaluate the perioperative use of ECMO as respiratory and/or circulatory support in thoracic surgery: indications, benefits, and perioperative management.

METHODS

Between May 2013 and December 2018, we reviewed the clinical data of 15 patients (11 males and 4 females; mean age: 47 years old; range, 25-73 years) undergoing ECMO-assisted thoracic surgery in our hospital.

RESULTS

Of the 15 patients, 10 cases received peripheral veno-arterial (VA) ECMO and five cases received veno-venous (VV) ECMO. Indications for ECMO were pulmonary transplantation with hard-to-maintain oxygenation (n = 5), traumatic main bronchial rupture (n = 2), traumatic lung injury (n = 1), airway tumor leading to severe airway stenosis (n = 2), huge thoracic mass infiltrated vena cava (n = 5). The ECMO duration was 1-51 hours. All patients were successfully extubated and weaned from ECMO postoperatively. The main complications were hemorrhage (26.7%), infection (33.3%), acute hepatic dysfunction (33.3%), and venous thrombosis (26.7%). There was only one hospital death and postoperative one-year survival rate was 86%.

CONCLUSION

Our experience indicates that ECMO is a feasible method for complex trachea-bronchial surgery, huge thoracic mass excision and lung transplantation, and the ECMO-related risks may be justified. With further accumulation of experience with ECMO, a more sophisticated protocol for management of critical airway or heart failure problems in thoracic surgeries can be derived.

Treatment of tracheal stenosis with extracorporeal membrane oxygenation support in infants and newborns

Tracheal stenosis in children is a challenge for the healthcare team, since it is a rare disease. Patients usually have other clinical comorbidities, mainly previous cardiac surgical interventions. This retrospective single-center study included infants with tracheal stenosis (congenital or acquired) operated between 2016 and 2020 on venoarterial extracorporeal membrane oxygenation (VA ECMO). Five patients were operated and the median age of detection of the tracheal disease was 3.7 months, and the median age at the operation was 5 months. All patients had associated cardiac anomalies. Four patients had congenital tracheal stenosis; two with associated pig bronchus. One patient had acquired subglottic stenosis with concomitant stenosis at the carina. After the operation, the patients were referred to ICU on ECMO with an open chest. Minor ECMO-related complications occurred in two patients (hemothorax and wound infection). All patients required endoscopic evaluation during the postoperative care; median of 3.2 procedures. Two patients are currently in follow-up and three have died. Slide tracheoplasty with VA-ECMO can be successfully performed in infants with prior cardiac surgery. Nevertheless, a difficult postoperative course should be anticipated, with possible prolonged ECMO use, readmissions, and higher morbidity and mortality than in children with tracheal stenosis alone.

The Use of Intraoperative Peripheral Extracorporeal Membrane Oxygenation in High-Risk Airways Tumor Removal Procedures in Neonates and Children: A Single-Center Case Series

Airway surgery involving trachea or main stem bronchi in neonates and children is challenging. The use of extracorporeal support for such unusual indications is poorly described. Here, we report on three patients receiving peripheral extracorporeal membrane oxygenation (ECMO) to maintain adequate ventilation while improving surgical site exposure. Case 1 is a 9-year-old boy diagnosed with proximal left stem bronchus endoluminal tumor; cases 2 and 3 are a neonate and a young infant diagnosed with a subcarinal bronchogenic cyst. Planned ECMO use consisted in peripheral venoarterial cannulation through jugular and carotid access. There was no bleeding complication during and after surgical care. Hemodynamic and respiratory supports were optimized in all cases. Children were successfully weaned off ECMO immediately after surgery. Planned peripheral ECMO cannulation offers optimal conditions for high-risk airway surgery in neonates and children.

Preliminary Results of Extracorporeal Membrane Oxygenation Assisted Tracheal Sleeve Pneumonectomy for Cancer

OBJECTIVE

Tracheal sleeve pneumonectomy is a challenge in lung cancer management and in achieving long-term oncological results. In November 2018, we started a prospective study on the role of extracorporeal membrane oxygenation (ECMO) in tracheal sleeve pneumonectomy. We aim to present our preliminary results.

METHODS

From November 2018 to November 2019, six patients (three men and three women; median age: 61 years) were eligible for tracheal sleeve pneumonectomy for lung cancer employing the veno-venous ECMO during tracheobronchial anastomosis.

RESULTS

Only in one patient, an intrapericardial pneumonectomy without ECMO support was performed, but cannulas were maintained during surgery. The median length of surgery was 201 minutes (range: 162-292 minutes), and the average duration of the apneic phase was 38 minutes (range: 31-45 minutes). No complications correlated to the positioning of the cannulas were recorded. There was only one major postoperative complication (hemothorax). At the time of follow-up, all patients were alive; one patient alive with bone metastasis was being treated with radiotherapy.

CONCLUSION

ECMO-assisted oncological surgery was rarely described, and its advantages include hemodynamic stability with low bleeding complications and a clean operating field. As suggested by our preliminary data, ECMO-assisted could be a useful alternative strategy in select lung cancer patients.

Elective extra corporeal membrane oxygenation for high-risk rigid bronchoscopy

The use of extracorporeal membrane oxygenation for high-risk rigid bronchoscopy has been reported in few urgent cases. We report our experience with this approach which was planned electively in five cases on 202 procedures (2.5%). It was proposed because of the potential inability to ventilate the lungs using conventional techniques due to extensive tracheobronchial lesions or the risk of major intraoperative bleeding related to disease characteristics. There were no intraoperative complications and postoperative course was favourable in all patients. With a maximum follow-up of 3 years and 7 months, all patients are alive with no tracheostomy despite major morbidities.

Preemptive veno-venous ECMO support in a patient with anticipated difficult airway: A case report

This report presents a case of endotracheal metastasis in which elective veno-venous extracorporeal membrane oxygenation (VV ECMO) was used to undergo tracheal laser-surgery prior to establishment of a definitive airway. Specifically, we describe the respiratory and airway management in an adult patient from the preclinical phase throughout elective preoperative ECMO implantation to postoperative ECMO weaning and decannulation in the Intensive Care Unit. This case report lends further supports to the idea that the extracorporeal membrane oxygenation could be electively used to provide safe environment for surgery in situations where the standard maneuvers of sustaining adequate gas exchange are anticipated to fail.

Recent trends in airway management

Clinical airway management continues to advance at a fast pace. To help update busy anesthesiologists, this abbreviated review summarizes notable airway management advances over the past few years. We briefly discuss advances in video laryngoscopy, in flexible intubation scopes, in jet ventilation, and in extracorporeal membrane oxygenation (ECMO). We also discuss noninvasive ventilation in the forms of high-flow nasal cannula apneic oxygenation and ventilation and nasal continuous positive airway pressure (CPAP) masks. Emerging concepts related to airway management, including the physiologically difficult airway and lower airway management, new clinical subspecialties and related professional organizations such as Anesthesia for Bronchoscopy, the Society for Head and Neck Anesthesia, and fellowship training programs related to advanced airway management are also reviewed. Finally, we discuss the use of checklists and guidelines to enhance patient safety and the value of large databases in airway management research.

Usefulness of extracorporeal membrane oxygenation in status asthmaticus with severe tracheal stenosis

Extracorporeal membrane oxygenation, traditionally used to treat refractory hypoxemic respiratory failure due to acute respiratory distress syndrome, is being used to treat other etiologies of severe respiratory failure refractory to conventional mechanical ventilation. We present a 30-year-old woman with concomitant life-threatening airway obstruction due to severe tracheal stenosis and status asthmaticus treated effectively with veno-venous extracorporeal membrane oxygenation.

Anesthetic considerations for tracheobronchial resection in oncologic surgery

PURPOSE OF REVIEW

Anesthesia for the resection and reconstruction of the tracheobronchial tree for neoplastic disease is challenging, both from surgical as well as anesthetic points of view. There are no published recommendations or guidelines addressing anesthetic and airway management dilemmas that arise during these surgical interventions. This review presents key aspects of preoperative imaging evaluation, surgical planning, as well as anesthesia and airway management during these complex cases.

RECENT FINDINGS

Newly published articles highlight both the surgical and anesthetic challenges encountered during tracheobronchial resections and emphasize the importance of creating specialized, high-volume centers for good patient outcomes. Of great importance is the development of a preoperative joint anesthetic-surgical plan which includes a patient-specific airway management strategy. This review presents newer and less commonly employed anesthetic management strategies which have been recently described in the literature to allow expansion of care to patients who were previously deemed too high risk for surgery.

SUMMARY

With advances in technology, the use of classical ventilation methods in conjunction with newer alternatives, such as extracorporeal membrane oxygenation, creates the premise for a more individualized, safer and controlled approach to tracheobronchial resections for oncologic purposes.

Extracorporeal Membrane Oxygenation During Adult Noncardiac Surgery and Perioperative Emergencies: A Narrative Review

Over the last decade, the use of extracorporeal membrane oxygenation (ECMO) has increased significantly. In some centers, ECMO has been deployed to manage perioperative emergencies and plays a role in facilitating high-risk thoracic, airway, and trauma surgery, which may not be feasible without ECMO support. General anesthesiologists who usually manage these cases may not be familiar with the initiation and management of patients on ECMO. This review discusses the use of ECMO in the operating room for thoracic, airway, and trauma surgery, as well as obstetric and perioperative emergencies.

The bridging bronchus: A comprehensive review of a rare, potentially life-threatening congenital airway anomaly associated with cardiovascular defects

The bridging bronchus is a rare congenital airway anomaly in which the right upper lobe of the lung is supplied by the right main bronchus while the right lower lobe, and often the right middle lobe is supplied by an aberrant bronchus arising from the left main bronchus. The aberrant bronchus crosses (bridges) the lower part of the mediastinum, hence the term bridging bronchus (BB). This potentially life-threatening condition, usually accompanied by diffuse or focal airway stenosis, commonly presents with signs and symptoms related to large airway obstruction, such as respiratory distress, apnea, wheezing, stridor, and recurrent respiratory tract infections. Diagnosis of the BB is often challenging because the associated signs and symptoms mimic those of common conditions such as bacterial and viral bronchiolitis, bronchial asthma, cystic fibrosis, and foreign body aspiration. The BB is also often accompanied by congenital cardiovascular anomalies, including left pulmonary artery sling, atrial, and ventricular septal defects, tetralogy of Fallot, patent ductus arteriosus, and coarctation of the aorta. Patients presenting with the above signs and symptoms who are not responsive to standard treatment modalities, and have accompanying cardiovascular congenital anomalies should, therefore, be investigated for the BB. Herein, we review the anatomy, embryology, clinical presentation, differential diagnosis, imaging techniques and surgical management of the BB.

Anesthetic Management of the Narrowed Airway

Airway narrowing can be idiopathic or can occur as a result of airway tumors, hematomas, infections, and other pathologic conditions. Endoscopic management variously involves balloon dilatation, stent placement, laser vaporization of pathologic tissue, microdebridement, and other interventions, using either a rigid or a flexible bronchoscope. Jet ventilation is frequently used in such settings, especially when the presence of an endotracheal tube would interfere with the procedure. In desperate cases, extracorporeal membrane oxygenation may be used in managing the critical airway.

Extended Indications for Extracorporeal Membrane Oxygenation in the Operating Room

Background:

The use of extracorporeal life support (ECLS) for cardiorespiratory support is increasing. Traditional absolute contraindications are currently deemed relative contraindications. Extracorporeal life support is now considered for a wider cohort of patients on a case-by-case basis.

Method:

We performed a review of the literature and examined current Extracorporeal Life Support Organization guidelines that support the use of ECLS in the operating room, based on the underlying pathology and surgical procedure proposed. We discuss specific surgical populations and different modes of ECLS and cannulation strategies.

Results:

Based on the available literature, veno-venous extracorporeal membrane oxygenation (ECMO) can be used for the management of complex tracheobronchial and lung surgery, both in the elective and in the emergent setting. Elective veno-arterial (V-A) ECMO for cardiocirculatory support should be considered in high-risk patients undergoing ventricular tachycardia ablation. Extracorporeal life support should be considered as a potential life-saving intervention in almost all parturients with severe respiratory failure or refractory cardiogenic shock. V-A ECMO should be considered in unanticipated intraoperative cardiac arrest in patients without preexisting end-organ failure.

Conclusion:

As the number of indications for ECLS in the operating room is growing, anesthesiology and surgical staff should become familiar with the perioperative management of patients on ECLS.