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American Journal of Transplantation ; 22(Supplement 3):404, 2022.
Article in English | EMBASE | ID: covidwho-2063367


Purpose: The OPTN DTAC, a multidisciplinary group, evaluates potential donor derived transmission events (PDDTE) to assess the likelihood of disease transmission. Method(s): Retrospective study of PDDTE cases reported to the OPTN between 01/20 and 12/20. DTAC reviewed cases using a standardized classification algorithm. Result(s): During 2020, there were 18,318 donors and 37,583 unique recipients. DTAC reviewed 261/427 PDDTE from donor (111) or recipient (150) findings. 64/261 (25%) donors had proven/probable transmission (P/P Tr) of infection, malignancies or other to 84/206 (41%) exposed recipients [figure]. 12 involved living donors. Infection occurred with 44/64 P/P cases affecting 63 recipients. Viruses were most frequent P/P infections with 29 recipients having P/P Tr from 19 donors. COVID-19 PDDTE represented 11% (29/261) of all cases reviewed involving 29 donors and 15 lung and 76 non-lung recipients. One lung recipient had P/P Tr and died;none of the non-lung recipients developed P/P Tr. For bacteria, 20 recipients had P/P Tr from 14 donors. Deaths from infection (N=10) occurred at a median of 20 days (5-89 days). Attributable death was highest for fungal (4/12, 33%) and bacterial infections (6/20, 30%). 7 donors with malignancies were classified as P/P impacting 15 recipients with 1 attributable death. 53 non-infection, non-malignancy PDDTE were reported;13 resulted in P/P Tr to 14 recipients. Conclusion(s): Although P/P events remain rare, 1/4 reviewed cases resulted in unanticipated P/P Tr. This is a conservative estimate due to passive reporting and empiric interventions. In 29 COVID-19 PDDTE only 1 lung recipient had P/P Tr. The DTAC continues to evaluate PDDTE to maximize organ use and minimize the risk of transmission. (Table Presented).

American Journal of Transplantation ; 22(Supplement 3):333, 2022.
Article in English | EMBASE | ID: covidwho-2063353


Purpose: Decision to transplant organs from SARS-CoV-2 NAT+ donors(N+D) balances risk of donor-derived infection with the scarcity of available organs to meet the needs of waitlisted candidates. Method(s): OPTN Ad Hoc Disease Transmission Advisory Committee (DTAC) reports on the use of organs from N+D from the onset of required SARS-CoV-2 lower respiratory tract(LRT) testing for lung donors (May 27, 2021) through August 31, 2021. OPTN data were analyzed for donors with a positive LRT or upper respiratory tract (URT) test reported in DonorNet discrete data fields (N+D), compared with donors who did not have positive LRT or URT in the discrete data fields (N-D). Result(s): Organs were recovered from 120 N+D (all OPTN Regions and 40/57 OPOs (70%)). Median donor age was 42 (IQR: 32-52) for N+D and 43 (30-56) for N-D. There was a greater proportion of DCD N+D than N-D (37.5% vs 28.3%, p=0.04). Underlying COD of anoxia and other were different (N+D 31.7%, 16.7% vs N-D 48%, 2.7%, respectively). Transplanted N+D and N-D did not differ by KDPI, LDRI or LVEF for kidney(KT), liver(LT) or heart(HT), respectively (Table 1). Median time from donor admission to first reported test (any result) was 0 and 4 days for URT and LRT, respectively. N+D recovery occurred a median of 2 (IQR: 1-6) days from last positive test. 246 organs (152KT, 50LT, 22HT, 22other) were transplanted from 107 N+D compared to 8969 organs from 3348 N-D. Recipients from N+D and N-D were similar in age, MELD/PELD (LT) and medical urgency status (HT). Median time from listing to transplant similar for N+D for all organs. The match run sequence number for final acceptor was higher for N+D for all organ types (Table 2). Median length of stay was similar for N+D and N-D for KT and LT (5d and 12-13d, respectively). For HT, median stay was shorter for N+D (30 vs 34d). For N+D, 3 of 50 LT died within 30d of transplant. During this timeframe, no PDDTEs were reported for any N+D at the time of transplant. Conclusion(s): N+D and N-D were similar in terms organ quality characteristics. Recipients receiving organs from N+D had higher match run sequence numbers, suggesting use of organs from N+D is not widespread across centers;however, with small numbers, this data will need to be verified. We cannot assess the relatedness of the three early mortality events in N+D recipients to donor or recipient characteristics. However, these data highlight the importance of ongoing outcome review of N+D recipients. (Figure Presented).

2021 World Engineering Education Forum/Global Engineering Deans Council, WEEF/GEDC 2021 ; : 196-204, 2021.
Article in English | Scopus | ID: covidwho-1700558


There is an increasing emphasis on making higher sustainability education more effective by using transformative learning. One of the major environmental factors to bring transformative learning into practice is by creating an authentic learning environment in the classroom. Amid the COVID-19 pandemic many universities shifted from online to completely digital or hybrid (mix of digital and face-to face) teaching practice. The current research is an attempt to explore how an authentic learning environment can be fostered in a digital setting by incorporating the critical characteristics of authentic activities in a hybrid setting during a field exercise course at the University of Tokyo. The study describes the design and implementation of a field exercise course and captures the participants' perspectives using semi-structured interviews on their experiences. The participants' perspectives indicate a positive response towards hybrid authentic learning environment set up during the course. The study concludes that the field exercise course successfully offers learning experiences aligned to the characteristics of the authentic learning environment in a hybrid setting. The research can offer concrete practice, pathways, and lessons for program development, with authentic learning environment, in a hybrid setting. © 2021 IEEE.