Decreased graft survival in liver transplant recipients of donors with positive blood cultures: a review of the United Network for Organ Sharing dataset

Minimizing risk while maximizing opportunity: The infectious disease organ offer process survey

BACKGROUND

The purpose of this study was to understand how transplant infectious disease (TID) physicians assess a potential donor with known or suspected infection and describe posttransplant management.

METHODS

We designed a survey of 10 organ offer scenarios and asked questions pertaining to organ acceptability for transplantation and management posttransplant. The survey was distributed to TID clinicians via transplant society listservs and email. Responses were recorded in REDCap, and descriptive statistics were employed.

RESULTS

One hundred thirteen infectious disease physicians responded to the survey, of whom 85 completed all cases. Respondents were generally in agreement regarding organ acceptability, although some divergence was seen when evaluating lungs from donors with influenza, tuberculosis, or multidrug-resistant Acinetobacter infection. Posttransplant management showed more variation. Areas of optimization were identified: (1) Further understanding of where risk-mitigation strategies within the donor offer process may improve donor acceptability and therefore organ utilization; (2) importance of recipient considerations in assessing degree of infectious risk; and (3) gaps in evidenced-based data regarding optimal posttransplant management of recipients.

CONCLUSION

Evaluation of donor offers by TID clinicians is a complex process. Although the survey does not itself serve to make recommendations regarding best practices, it highlights areas where generation of data to inform acceptance and management practices may allow for improved organ utilization and recipient management.

Solid Organ Transplantation From Deceased Donors With Infective Endocarditis: The UK Experience

BACKGROUND

There is little evidence regarding the use of organs from deceased donors with infective endocarditis. We performed a retrospective analysis of the utilization, safety, and long-term survival of transplants from donors with infective endocarditis in the United Kingdom.

METHODS

We studied deceased donor transplants over an 18-y period (2001-2018) using data from the UK Transplant Registry. We estimated the risk of infection transmission, defined as a microbiological isolate in the recipient matching the causative organism in the donor in the first 30 days posttransplant. We examined all-cause allograft failure up to 5 years in kidney and liver recipients, comparing transplants from donors with endocarditis with randomly selected matched control transplants.

RESULTS

We studied 88 transplants from 42 donors with infective endocarditis. We found no cases of infection transmission. There was no difference in allograft failure between transplants from donors with infective endocarditis and matched control transplants, among either kidney (hazard ratio, 1.48; 95% CI, 0.66-3.34) or liver (hazard ratio, 1.14; 95% CI, 0.54-2.41) recipients. Compared with matched controls, donors with infective endocarditis donated fewer organs (2.3 versus 3.2 organs per donor; P < 0.001) and were less likely to become kidney donors (odds ratio, 0.29; 95% CI, 0.16-0.55).

CONCLUSIONS

We found acceptable safety and long-term allograft survival in transplants from selected donors with infective endocarditis in the United Kingdom. This may have implications for donor selection and organ utilization.

Impact of Donor Positive Blood Culture in Deceased Donor Liver Transplantation

INTRODUCTION

In the era of shortage of organs for donation, transplantation from suboptimal donors is an expanding alternative to minimize waitlist mortality. In that sense, the safety of using organs from bacteremic donors has been a recurrent matter of discussion. We aimed to evaluate the influence of donor positive blood culture in the recipient and graft outcomes after liver transplantation from deceased donors.

MATERIAL AND METHODS

Blood culture results from 255 deceased liver donors were retrospectively reviewed. Patients were categorized into 2 groups based on the recipients who obtained a graft from a donor with negative or positive blood culture. Graft and recipient outcomes were compared between the 2 groups using univariate survival analysis and multivariate regression models. Transmission of bloodstream infection from donor to recipient was assessed by reviewing recipients' microbiologic status when there was evidence of infection.

RESULTS

Positive blood culture in donors was not associated with negative outcomes after transplantation. Death within 30 days after transplantation and overall recipient and graft survival did not differ between the 2 groups. Only Child-Pugh score ≥10 and retransplantation status were considered independent predictors of recipient death and graft failure. We identified 1 potential case of bacteremia transmission from donor to recipient.

CONCLUSION

Donor positive blood culture was not associated with negative outcomes after liver transplantation. Transmission of infection from donor to recipient is possible, but rare. The results support the usage of bacteremic donors as a safe alternative to the scarcity of optimal donors.

Organ donor screening for carbapenem-resistant gram-negative bacteria in Italian intensive care units: the DRIn study

The 759 cases of brain death declaration (BDD [Italian law, 6 hours of observation time]) that occurred in 190 Italian intensive care units (ICUs) between May and September 2012 were studied to quantify carbapenem-resistant gram-negative bacteria (CR-GN) isolated in organ donors, to evaluate adherence to national screening guidelines, and to identify risk factors for CR-GN isolation. Mandatory blood, bronchoalveolar lavage, and urine cultures were performed on the BDD day in 99% of used donors. Because results were rarely made available before transplant, >20% of transplants were performed before obtaining any microbiological information, and organs from 15 of 22 CR-GN cases were used. Two (lung-liver) of the 37 recipients died, likely because of donor-derived early CR-GN sepsis. ICU stay >3 days (odds ratio [OR] = 7.49, P = .004), fever (OR = 3.11, P = .04), age <60 years (OR = 2.80, P = .06), and positive ICU epidemiology (OR = 8.77, P = .07) were associated with CR-GN isolation. An association between single ICU and risk of CR-GN was observed, as a result of differences across ICUs (ICC = 29%; 95% confidence interval [CI] 6.5%-72%) probably related to inadequate practices of infection control. Continuous education aimed at implementing priority actions, including stewardship programs for a rational use of antimicrobials, is a priority in healthcare systems and transplant networks. Improved awareness among ICU personnel regarding the importance of early CR-GN detection and timely alert systems might facilitate decisions regarding organ suitability and eventually save recipient lives.