Urgently listed lung transplant patients have outcomes similar to those of electively listed patients

Outcomes of patients awaiting lung transplantation after the implementation of donation after brain death at a single Chinese center

Voluntary contribution has become the only source of donor lungs in China since 2015. To elaborate the outcomes of patients awaiting lung transplantation (LTx) after the implementation of donation after brain death, we performed a retrospective study that encompassed 205 patients with end-stage lung disease who registered for LTx at Shanghai Pulmonary Hospital from January 1, 2015 to January 1, 2021. A total of 180 patients were enrolled in the study. The median waiting time was 1.25 months. Interstitial lung disease (ILD) (103/180, 57.2%) and chronic obstructive pulmonary disease (COPD) (56/180, 31.1%) were the most common diseases in our study population. The mean pulmonary artery pressure (mPAP) of patients in the died-waiting group was higher than that of the survivors (53.29±21.71 mmHg vs. 42.11±18.58 mmHg, P=0.002). The mortality of patients with ILD (34/103, 33.00%) was nearly twice that of patients with COPD (10/56, 17.86%) while awaiting LTx (P=0.041). In the died-waiting group, patients with ILD had a shorter median waiting time than patients with COPD after being listed (0.865 months vs. 4.720 months, P=0.030). ILD as primary disease and mPAP > 35 mmHg were two significant independent risk factors for waitlist mortality, with hazard ratios (HR) of 3.483 (95% CI 1.311-9.111; P=0.011) and 3.500 (95% CI 1.435-8.536; P=0.006). Hence, LTx is more urgently needed in patients with ILD and pulmonary hypertension.

Inpatient Management of the Acutely Decompensating Lung Transplant Candidate

Lung allocation in the US changed nearly 15 years ago from time accrued on the waiting list to disease severity and likelihood of posttransplant survival, represented by the lung allocation score (LAS). Notably, the risk of death within a year plays a stronger role on the score calculation than posttransplant survival. While this change was associated with the intended decrease in waitlist mortality (most recently reported at 14.6%), it was predictable that transplant teams would have to care for increasingly older and complex candidates and recipients. This urgency-based allocation also led centers to routinely consider transplanting patients with higher acuity, often hospitalized and, not infrequently, in the intensive care unit (ICU). According to the Scientific Registry for Transplant Recipients, from 2009 to 2019, the proportion of lung recipients hospitalized and those admitted to the ICU at the time of transplant increased from 18.9% to 26.8% and from 9.2% to 16.5%, respectively..

Spirometry testing for extracorporeal membrane oxygenation (ECMO) bridge to transplant patients

PURPOSE

ECMO can provide a bridge to transplantation and improve survival for patients with advanced lung disease. Although pulmonary function testing (PFT) is an important component of the lung allocation score (LAS), it is not always feasible on patients requiring ECMO. While generally safe, PFT testing has contraindications and is not recommended in unstable patients. Currently there are no recommendations regarding the performance of spirometry in ECMO patients.

STUDY DESIGN

and Methods: We reviewed data on five patients with advanced lung disease requiring ECMO-bridge to transplant. After careful consideration of the theoretical physiologic risks associated with forced expiratory maneuvers, bedside spirometry was performed in order to update the patients' LAS.

RESULTS

All patients successfully completed three forced expiratory maneuvers in the seated position with a bedside spirometer. Vital signs and ECMO flow were stable during testing and without complication. In 2 patients who had both a LAS pre and post spirometry, the LAS increased by 3-5 points.

CONCLUSION

Spirometry results are pivotal to organ allocation under current organ sharing protocols. This case series demonstrates that bedside spirometry testing may be performed safely in patients on ECMO awaiting lung transplantation without appreciable side effects, leading to a more accurate LAS score.

The Year in Cardiothoracic Transplant Anesthesia: Selected Highlights From 2020 Part I - Lung Transplantation

This special article focuses on the highlights in cardiothoracic transplantation literature in the year 2020. Part I encompasses the recent literature on lung transplantation, including the advances in preoperative assessment and optimization, donor management, including the use of ex-vivo lung perfusion, recipient management, including those who have been infected with coronavirus disease 2019, updates on the perioperative management, including the use of extracorporeal membrane oxygenation, and long-term outcomes.

Lung transplantation during the outbreak of Coronavirus Disease 2019 in China

OBJECTIVES

The study objectives were to illustrate our workflow for lung donation and transplantation during the Coronavirus Disease 2019 crisis and to report our preliminary experience with perioperative care.

METHODS

We retrospectively analyzed data in the China Lung Transplantation Registration from January 23, 2020, to March 23, 2020 (2020 cohort), compared with the same period in 2019 (2019 cohort). Pre- and post-lung transplantation management strategies, including measures aiming to prevent severe acute respiratory syndrome coronavirus 2 infection, were applied to all recipients, including 5 post-Coronavirus Disease 2019 transplants during the Coronavirus Disease 2019 pandemic period in China.

RESULTS

Twenty-eight lung transplant procedures were performed, including lung transplant for 5 patients with acute respiratory distress syndrome due to Coronavirus Disease 2019-related pulmonary fibrosis. Compared with the 2019 cohort, more patients with urgent conditions received transplantation in 2020, with a shorter pre-lung transplant admission time and early mobilization post-lung transplant. A large proportion (60%) of lung donations were transported on high-speed trains and commercial flights or highways and commercial flights. Grafts in the preservation containers were handed over to the receiving staff at the airport for 40% (10/25) of donations, which reduced the unnecessary quarantine of transporting staff entering the city. Listed candidates were urgently transferred to other qualified centers in 17.9% of cases (5/28), which reduced the risk of severe acute respiratory syndrome coronavirus 2 exposure in Coronavirus Disease 2019-designated hospitals. The 90-day survival of the transplant recipients in 2020 was 85.7%, including 3 of 5 recipients (60%) who had critically severe Coronavirus Disease 2019.

CONCLUSIONS

Lung transplant and donation amid Coronavirus Disease 2019 can be performed safely with coordinated efforts on medical resource sharing and medical staff protection based on stratification of the infection risk. Outcomes were not compromised during the Coronavirus Disease 2019 outbreak. Lung transplantion can be regarded as salvage therapy for critical patients with Coronavirus Disease 2019 with a confirmed positive turned negative virology status.