Donor Outcomes Research Articles

Donor Characteristics and Outcomes of Pediatric Heart Transplantation in South Korea.

Heart transplantation is often limited by the availability of transplantable donor heart and understanding of donor aspects that would influence transplant outcomes becomes important. In this study, donor characteristics and their impact on the outcomes of pediatric heart transplantations performed in South Korea were investigated. We reviewed the medical records of patients less than 18 years old who received heart transplantation between 2002 and 2022 in three tertiary hospitals located in South Korea. A total of 139 cases were enrolled. One-year mortality was 10.4% and total mortality was 33.8%. Forty-nine recipients (35.3%) showed biopsy-proven rejections and 20 (14.4%) showed cardiac allograft vasculopathy during mean follow-up of 6.4 ± 4.9 years. Six recipients (4.5%) showed left ventricle ejection fraction of less than 55% post-transplantation. The mean age of the donors was 23.0 ± 15.4 years. The most common cause of death of the donors was unspecified illness (46.4%). Donors with a history of diabetes, hypertension, smoking, and alcohol consumption were 0%, 3.1%, 32.1%, and 34.4%, respectively. Mean total ischemic time was 191.6 ± 72.7 min, while total ischemic time was over 4 h in 37 patients (26.6%). There were no significant relationship between donor factors and survival. However, donor's history of drinking or cardiopulmonary resuscitation was significantly associated with acute rejection and donor's age with cardiac allograft vasculopathy. Donor factors did not show significant impact on post-transplant survival but some factors were predictive of post-transplant rejection and cardiac allograft vasculopathy.

Propensity Score-matched Donor and Recipient Outcomes: Robotic Versus Laparoscopic Donor Right Hepatectomy.

Few studies have examined the long-term outcomes of recipients in minimally invasive donor hepatectomies, particularly comparing robotic and laparoscopic donor procedures. Understanding these outcomes is crucial for optimizing surgical approaches and improving the overall success of living donor liver transplantation. This study aimed to compare the feasibility and safety of robotic donor right hepatectomy (RDRH) and laparoscopic donor right hepatectomy (LDRH) by evaluating total follow-up patient outcomes. This retrospective, single-center study included 117 and 118 donors who underwent RDRH and LDRH between March 2016 and June 2023, respectively. After performing 1:1 propensity score matching, 71 donor-recipient pairs were included in each group. Donor and recipient complications were divided into early (within 90 d) and late (after 90 d) biliary and vascular complications. In the matched cohort, major complication rates of donors were similar in both groups. Bile duct (BD) variation was not significantly different; however, the rates of multiple BD openings (26.8% versus 54.9%; P = 0.001) and major biliary complications in recipients were higher in the LDRH group (22.5% versus 42.3%; P = 0.012). The cumulative biliary complication rate was significantly higher in the LDRH group. Early biliary complications were not significantly different; however, the rate of late biliary complications was higher in the LDRH group (11.3 versus 23.9%; P = 0.047). RDRH demonstrated comparable postoperative complications to LDRH in donors but showed fewer recipient biliary complications. This could be attributed to the precision of robotic dissection and BD division, resulting in fewer multiple BD openings.

Outcomes of Multiorgan Heart Transplant Between Donation After Circulatory Death and Brain Death.

There is insufficient data on the outcomes of donation after circulatory death (DCD) multiorgan transplant that includes heart. The primary objective of this study is to compare the overall survival outcomes of DCD and donation after brain death (DBD) multiorgan transplants. We identified all heart transplant patients from 2019 to June of 2023 using the United Network for Organ Sharing (UNOS) Database who also received an additional organ (kidney, liver, and lungs). A total of 1,844 DBD and 91 DCD multiorgan transplants occurred within the study period, the majority being combined heart-kidney transplantation. More patients were listed at a higher status in the DBD group (p < 0.05) and were in the intensive care unit (ICU) before transplant (p < 0.05). Despite the higher ischemia time in the DCD group (p < 0.05), the overall unmatched survival did not differ between the two groups (p < 0.05). Within the heart-kidney transplants, the overall survival between DBD and DCD heart-kidney transplants did not differ in either unmatched or matched groups (unmatched p = 0.5, matched p = 0.5). In conclusion, the data on the outcomes of DCD multiorgan transplants are limited. Still, our analysis of the currently available data suggests that the overall survival is comparable in the DCD multiorgan transplants.

Perspectives on Long-Term Follow-Up Among Living Kidney Donors

Background: The long-term follow-up of living kidney donors is highly variable in Canada. Methods: We surveyed perspectives on post-donation follow-up among 685 living donors in the two largest transplant programs in Canada (43% survey response rate). The anonymous survey was informed by semi-structured interviews with 12 living kidney donors. The survey was developed based on themes identified in the semi-structured interviews, guidance from the research and clinical teams, and feedback from pilot testing with six previous donors. Results: Most (73%) respondents received follow-up after the first donation year from a primary care provider, and 70% reported annual follow-up visits including blood and urine tests. Most (71%) received a follow-up reminder from their transplant center, and follow-up was higher (86% versus 68%) among those receiving reminders. Donors wanted specialist involvement if new health or kidney-related events occurred. Most (70%) were satisfied with their follow-up, and 66% endorsed annual life-long follow-up. Donors wanted more information about lifestyle and living donor outcomes and wanted to contribute to research to increase understanding of long-term donor health outcomes. Conclusions: Donors wanted annual lifelong follow-up including clinical assessment and laboratory tests and more information about their post-donation health. A transplant center led, primary care provider administered model of long-term follow-up may best meet the care and information needs of most donors.

6394 Prevalence of Diabetes Insipidus in Pediatric Patients Who Have Been Declared Dead by Neurologic Criteria

Abstract Disclosure: C.E. Larancuent: None. V. Merilan: None. M. Leoncio: None. J.M. Lozano: None. B.R. Totapally: None. Introduction: Death by neurological criteria (DNC) or brain death (BD), occurs in individuals who have sustained catastrophic brain injury and are in permanent coma with loss of all brainstem function, coupled with the inability to breathe in the setting of hypercarbia and acidosis. Diabetes insipidus (DI) occurs in many but not all patients with DNC. Several studies indicate varying prevalence rates of DI among pediatric patients with DNC. Objective: Our objective was to determine the prevalence of DI in children who have been declared DNC, and the frequency of DI in these children according to the mechanism of brain injury. Methods: A retrospective analysis of 57 pediatric inpatients 0-21 years subsequently declared BD at Nicklaus Children’s Hospital from January 2013 to June 2023. Data was gathered from the hospital's electronic medical records and the VPS database. The primary exposure is brain death, while the secondary exposure is the mechanism of brain injury. These injuries were categorized into anoxic, traumatic brain injury (TBI), and brain tumors/space-occupying lesions (malignancy). The prevalence of DI was assessed as the primary outcome, and it was compared between three etiologies for brain death using Pearson Chi-square. Due to the study's small sample size, the association between the cause of BD and DI was not adjusted by covariates, such as sex and age. This study was exempted by the IRB. Results: Of the 53 patients declared BD, 47 (88.7%, 95% CI 77.9% to 95.3%) were diagnosed with DI. The prevalence of DI did not change significantly according to the etiology of brain injury leading to BD (84.4%, 100.0%, and 92.3% for anoxic brain injury, TBI, and malignancy, respectively; p = 0.410). The characteristics of children according to the etiology of brain death are presented in Table 1. The characteristics of children according to the development of DI are presented in Table 2. ICU length of stay, the duration to brain death declaration, and eligibility for organ donation varied with the etiology of brain death (Table 1). Conclusions: The prevalence of DI is high in pediatric patients declared BD, and it is not significantly different based on the etiology of brain death. Given this high prevalence, diligent DI management is needed to improve organ donation outcomes. Presentation: 6/2/2024

Outcomes of Donation after Circulatory Death Heart Transplant using Normothermic Regional Perfusion

Outcomes of Donation after Circulatory Death Heart Transplant using Normothermic Regional Perfusion

Impact of donor type on the outcomes of acute graft versus host disease to systemic corticosteroid therapy.

Systemic corticosteroid therapy is a well-established first-line treatment for grades II-IV acute graft-versus-host disease (aGVHD). Recently, several developments have occurred, including the introduction of transplantation from human leukocyte antigen (HLA) haploidentical donors using post-transplant cyclophosphamide (PTCY-Haplo), and improvements in prognosis after cord blood transplantation (CBT) in Japan. This study aimed to analyze the association between donor sources and outcomes in patients with aGVHD. Our study included 2732 patients who developed grades II-IV aGVHD, and were treated with systemic corticosteroids. We compared HLA-matched related donors (MRD), HLA-matched unrelated donors (MUD), PTCY-Haplo, and CBT. We set endpoint as response rate, 1-year cumulative incidence of non-relapse mortality (NRM), and overall survival (OS). The adjusted odds ratios for a complete response (CR) were 0.99 (95% confidence interval [CI]: 0.74-1.31, P = 0.925) for MUD, 2.08 (95% CI: 1.35-3.25, P = 0.001) for PTCY-Haplo, and 1.08 (95% CI: 0.83-1.41, P = 0.550) for CBT compared with MRD. A significant increase in response rates for PTCY were only found in a single-organ involvement. No significant association was observed between the donor source and NRM or OS. In conclusion, PTCY-Haplo is associated with a high response rate in patients with a single-organ aGVHD; however, MUD and CBT were not associated with treatment response.

Utilizing PPCO and the Mountain Model to Guide Clinical Improvement

This article describes a nurse practitioner–led project that uses PPCO (Problem, Population, Change, and Outcome) and the Mountain Model to guide an evidence-based practice quality improvement–focused initiative. These combined methods form an umbrella framework, guiding searches for relevant external literature and implementing sustainable evidence-based practice quality improvement enterprises. This initiative aims to improve organ and tissue donation outcomes through multidimensional process enhancements at an established donor and transplant hospital in the United States. The article includes search strings and search results, a comparison of evidence-searching questions, and the initial application of the Mountain Model to the selected clinical problem.

Five-Year Kidney Donation Outcomes After Medical Assistance in Dying.

Five-Year Kidney Donation Outcomes After Medical Assistance in Dying.

'I have to remind myself that everyone's search is different': experiences and outcomes of searching and not searching for donor connections among donor conceived adults.

What are the experiences and outcomes of donor conceived adults who are actively searching for, open to contact with, or not searching for donor connections? Most participants were actively searching or open to contact, and 67% had found or been found by a connection; finding or not finding experiences were complex. There is variation among donor conceived individuals in their interest in donor connections. Individual reasons for searching for connections, and which donor connections are searched for, also vary. Most research studies have focussed on individuals who are actively searching for their donor or donor siblings. Global increases in direct-to-consumer DNA testing and social media participation mean that connections may be made to individuals unaware of their (or their relatives') involvement with donor conception. These social and technological changes have also increased the chances of donor conceived individuals being contacted without expecting or desiring contact. This study included 88 donor conceived adults, in the UK, who participated in an online multi-method survey between January and August 2022. The survey was designed in consultation with staff and volunteers from the UK's largest community networks for donor conception families (Donor Conception Network, DCN) and donor conceived people (Donor Conceived Register Registrants' Panel, DCRRP). It was piloted by five donor conceived people before its launch. Participants were recruited with assistance from DCN and DCRRP, via social media, university mailing lists, and snowballing. Participants were mostly female (n = 65, 74%) and sperm donor conceived (n = 79, 90%). Of the 88 participants, 39 (44%) were actively searching for their donor connections, 44 (50%) were open to contact but not actively searching, and 5 (6%) were not searching. Questions were closed (yes/no, rating scale, or multiple choice) or open-ended, addressing experiences of donor conception, searching for connections, and finding or not finding connections. Data were analysed both quantitatively and qualitatively. Quantitative results showed no differences between the groups on any demographic variables or in when or how they found out about being donor conceived, and no differences between active searchers and those open to contact in whether they had found their donor connections. Significant differences were found between groups in their interest in their genetic history and the perceived importance of genetics to their sense of identity, with active searchers being more interested and rating this as more important than those open to contact. Methods of searching significantly differed across groups, with active searchers using genetic testing and social media more than those open to contact. 59 participants across all groups (active searchers (n = 29, 74%), open to contact (n = 27, 61%), not open to contact (n = 3, 60%)) had found or been found by a donor connection. Experiences of finding or not finding donor connections among participants actively searching or open to contact were captured by the theme complexities, with six subthemes: uncertainties in searching and relating; searching as open-ended; different donor connections, different experiences; expectations and realities; searching and finding or not finding as catalysing change; and experiences of other donor conceived people. Most participants were members of relevant community organizations. As is common in research in this area, the sample was mostly female and conceived using donor sperm. Donor conceived people who are disinterested in donor connections may be unlikely to participate in research on this topic. The nature and impact of the search process itself should be considered when developing appropriate mechanisms of support for all donor conceived people, regardless of whether they are actively searching for connections or not. Further research should seek to better understand how donor conceived people with varying levels of interest in searching for donor connections differ from one another. This study was funded by the UK Economic and Social Research Council [New Investigator Award ES/S015426/1]. The authors have no competing interests to declare. N/A.

Stage-based recipient and donor outcome in twin-to-twin transfusion syndrome treated by fetoscopic laser surgery using Solomon technique.

To evaluate twin survival stratified by Quintero stage in patients with twin-to-twin transfusion syndrome (TTTS) after Solomon laser treatment. This was a single-center study at Johns Hopkins Center for Fetal Therapy, investigating a cohort of consecutive twin pregnancies treated with the Solomon laser technique for TTTS. Preoperative Quintero stage, perioperative characteristics and obstetric factors were investigated in relation to neonatal survival of the recipient and donor twins at discharge. Determinants of twin survival were evaluated using univariate logistic regression and cumulative survival probability analyses. Of 402 pregnancies with TTTS that underwent Solomon laser treatment, 80 (19.9%) were diagnosed with Quintero Stage-I TTTS, 126 (31.3%) with Stage II, 169 (42.0%) with Stage III and 27 (6.7%) with Stage IV. Post-laser twin anemia polycythemia sequence or recurrent TTTS occurred in 19 (4.7%) patients and 11 (2.7%) required repeat laser surgery. Preterm prelabor rupture of membranes occurred in 150 (37.3%) patients and median gestational age at delivery was 32 + 1 weeks. In 303 (75.4%) patients, both twins were alive at discharge; 67/80 (83.8%) were Stage I, 101/126 (80.2%) were Stage II, 113/169 (66.9%) were Stage III and 22/27 (81.5%) were Stage IV (P = 0.062). Donor twin survival was lower than that of recipients in cases with Stage-III TTTS (118/169 (69.8%) vs 145/169 (85.8%) (χ2 = 26.076, P < 0.0001)). Higher intertwin size discordance and absent or reversed umbilical artery (UA) end-diastolic velocity (EDV) were associated with donor demise (Nagelkerke R2, 0.38; P < 0.001). Overall, spontaneous post-laser donor demise occurred in 53 (39.6%) patients, accounting for the majority of all losses. Cumulative donor survival decreased from 92% to 65% when intertwin size discordance was >30% and to 48% when UA-EDV was absent or reversed (P < 0.001). The Solomon laser technique achieves TTTS resolution and double twin survival in a high proportion of cases. Recipient and donor survival is comparable unless there is significant intertwin size discordance and placental dysfunction. This degree of unequal placental sharing, typically found in Stage-III TTTS, is the primary factor preventing double survival due to a higher rate of donor demise. © 2024 International Society of Ultrasound in Obstetrics and Gynecology.

P.228: The immediate outcome of kidney donors at PKLI, a single center experience.

P.228: The immediate outcome of kidney donors at PKLI, a single center experience.

Right vs Left Living Donor Nephrectomy: A Systematic Review and Meta-analysis of Donor and Recipient Outcomes

Right vs Left Living Donor Nephrectomy: A Systematic Review and Meta-analysis of Donor and Recipient Outcomes

Early outcomes in heart transplantation using donation after circulatory death donors in patients bridged with durable left ventricular assist devices

ObjectiveDonation after circulatory death heart transplantation potentially increases donor allografts, especially for patients with lower listing status. We assessed the outcomes of donation after circulatory death heart transplantation in patients bridged with durable left ventricular assist devices. MethodsThe United Network for Organ Sharing database was queried for adult heart transplants using donation after circulatory death donors from 2019 to 2022. Patients were stratified between those with durable left ventricular assist devices and those with intra-aortic balloon pump, inotropic, or no bridging support (control group). Primary outcome was 1-year mortality. Secondary end points were hospital length of stay, stroke, pacemaker implantation, dialysis, and acute rejection before discharge. ResultsA total of 160 left ventricular assist device recipients and 311 control recipients met study inclusion criteria. Recipients bridged with left ventricular assist devices were younger (55 vs 58 years, P < .001) with lower body mass index (28.3 vs 30.3, P < .001), longer waitlist times (112 vs 34 days, P < .001), longer out of body times (5.7 vs 4.6 hours, P < .001), and less frequent normothermic regional perfusion (31% vs 40%, P = .049). Patients with left ventricular assist devices commonly underwent transplantation at United Network for Organ Sharing status 3 and 4 (92%), whereas control patients underwent transplantation at status 2 (27%), status 3 (10%), status 4 (30%), or status 6 (30%). Kaplan–Meier analysis showed no difference in 1-year mortality between groups (P = .34). However, acute rejection was higher in the unadjusted left ventricular assist device cohort (26% vs 13%, P < .001). On multivariable logistic regression, left ventricular assist device was an independent predictor of acute rejection (odds ratio, 2.21, 95% CI, 1.32-3.69, P = .002). ConclusionsDurable left ventricular assist devices may be associated with a higher risk of developing an early inflammatory response in donation after circulatory death heart transplantation; however, 1-year survival was similar between groups.

Predictors of gamete donation: a cross sectional survey study.

In 2015, assisted reproductive technology (ART) accounted for 1.7% of all U.S. births, donor eggs accounted for over 17,000 started cycles in 2015, and donor sperm accounting for 6.2% of all cycles started in 2014. With increasing utilization of donor gametes as a method of assisting patients with infertility, the number of babies born each year utilizing gamete donation will also continue to increase. This study aimed to elucidate factors impacting decision to donate, amongst a representative national population. A survey was distributed via the internet utilizing SurveyMonkey Enterprise with HIPAA compliance. Univariate regressions and frequencies were conducted between each demographic and personal characteristic and the willingness to donate. Log Binomial and linear regression was used categorical and continuous variables, and Risk ratios were calculated. In this large survey study, 64% of men and 50% of women reported they would be willing to donate gametes, with the majority desiring monetary compensation. Men with a high Consumer Financial Protection Bureau score were less likely to report that they would consider donating sperm compared to a medium high CFPB score. No other financial indicators were associated with considering donating sperm. There were no associations between CFPB score and egg donation outcomes. Black or African American women were less likely to consider donating their eggs compared to other groups, and more likely to desire > $5000 in compensation. In this large survey study, a small minority of participants reported they would be willing to donate to an unknown infertility patient for reproductive purposes. High and very high CFPB scores were associated with willingness to donate games, but not with desire for monetary compensation or amount.

Donor and Recipient Age Influence Outcomes Following Orthotopic Heart Transplantation in the 2018 US Heart Allocation System.

This study evaluates the interaction of donor and recipient age with outcomes following heart transplantation under the 2018 heart allocation system. The United Network for Organ Sharing registry was queried to analyze adult primary isolated orthotopic heart transplant recipients and associated donors from August 18, 2018, to June 30, 2021. Both recipient and donor cohorts were grouped according to age: <65 and ≥65 y for recipients and <50 and ≥50 y for donors. The primary outcome was survival. Subanalyses were performed to evaluate the impact of donor age. A total of 7601 recipients and 7601 donors were analyzed. Of these, 1584 recipients (20.8%) were ≥65 y old and 560 donors (7.4%) were ≥50 y old. Compared with recipients <65, recipients ≥65 had decreased 1-y (88.8% versus 92.3%) and 2-y (85.1% versus 88.5%) survival rates (P < 0.001). The association of recipient age ≥65 with lower survival persisted after adjusting for potential cofounders (hazard ratio, 1.38; 95% confidence interval, 1.18-1.61; P < 0.001). Recipients <65 with donors ≥50 had comparable 1-y and 2-y survival rates to recipients <65 with donors <50 (P =0.997). Conversely, transplantation of older allografts was associated with lower 1-y (84.2% versus 89.4%) and 2-y (79.5% versus 85.8%) survival rates in recipients ≥65 (P = 0.025). Recipient age ≥65 continues to be associated with worse survival following heart transplantation in the 2018 heart allocation system compared with younger recipients. Donors ≥50 may be acceptable among recipients <65 with comparable outcomes. However, careful donor age selection should be considered for recipients ≥65, as the use of younger donor allografts appears to improve posttransplantation survival.

A false reactive hepatitis B surface antigen result due to dislodged gel from Vacutainer

Abstract: Preanalytical variables play a key role in the correctness of laboratory test results. We report a false reactive result for hepatitis B surface antigen (HBsAg) on serological testing with a relatively low OD. The pilot sample was collected in yellow top BD Vacutainer® (SST™ II Advance 5 mL tube) with separator gel and was marked for serological testing. It was centrifuged at 7000 rpm for 30 min. Serological testing was performed by chemiluminescence on Abbott Architect Plus i1000SR with Abbott kits for HBsAg, anti-HIV, and anti-HCV. This particular sample tested reactive for HBsAg with S/CO of 1.91, S/CO for HBsAgQ2NC (Negative kit control) being 0.19 and that of HBsAgQ2PC (Positive kit control) being 3.65. Repeat testing from the same Vacutainer was also reactive for HBsAg with S/CO of 2.10. Nucleic acid testing was performed and was found to be nonreactive. We repeated serological testing with a sample from fresh frozen plasma of the same donor unit. It was nonreactive. Cross contamination was ruled out by repeat testing of two serial samples before and after this unit number. The serum showed an unusual appearance on visual inspection after centrifugation. By exclusion, we concluded that the gel probably got partially dislodged into the serum, giving a relatively low reading and false reactive result for HBsAg. This highlights the possibility of inert gel not always being inert, the importance of repeat testing from a different sample in case of low reading, the importance of visual inspection, a need for manufacturers and laboratory personnel to consider such preanalytical variables which, though not much mentioned in literature, can affect test results. These results have a multi-fold impact on the donor or patient’s mindset, treatment outcome and/or fate of blood donation. These are definitely preventable if more such guidelines are made available for handy reference in handling such results.

Balancing Donor Health and Plasma Collection: A Systematic Review of the Impact of Plasmapheresis Frequency

Most plasma used for manufacturing plasma-derived medicinal products (PDMPs) such as albumin, immunoglobulin (Ig), and clotting factors is obtained from source plasma collected via plasmapheresis, the majority of which is contributed by the United States (US). While the demand for PDMPs continues to rise, it remains unclear whether high-frequency plasmapheresis, such as the twice-weekly plasma donation allowed in the US, may have any (long-term) adverse health effects on the donor. To investigate the frequency at which plasma can be donated without harm to the donor, the current systematic review explores the impact of plasma donation frequency on cardiovascular health, protein depletion, and adverse events in healthy plasma donors. We asked the following research question: What is the impact of plasmapheresis frequency (Intervention) on the safety or health (Outcome) of healthy donors (Population)? Six databases (PubMed, Embase, Web of Science, CINAHL, the Cochrane Library, and Transfusion Evidence Library), 2 clinical trial registries (ICTRP and clinicaltrials.gov), and the PROSPERO database were searched. Four observational and 2 experimental studies were included. The results showed that very high-frequency donation (twice per week) may result in a clinically relevant decrease in ferritin and bring IgG levels below the lower threshold of 6 g/l. However, the evidence is of low to very low certainty, and solid conclusions are hindered by the healthy donor effect and methodological limitations of the included studies. To determine a safe threshold donation frequency that minimizes any possible harmful effect on the donor, more high-quality prospective cohort studies and experimental studies are needed. We should expedite such studies to support recommendations, as conclusive evidence confirming or refuting the safety of maximum allowed donation frequencies is lacking. Donor protection is essential, given that healthy donors receive no direct medical benefit from donating plasma.

Multivariable linear model for predicting graft weight based on 3-dimensional volumetry in regards to body weight change of living liver donor: an observational cohort study.

The purpose of this study is to build a prediction model for estimating graft weight about different graft volumetry methods combined with other variables. Donors who underwent living-donor right hepatectomy from March 2021 to March 2023 were included. Estimated graft volume measured by conventional method and 3-dimensional (3D) software were collected as well as the actual graft weight. Linear regression was used to build a prediction model. Donor groups were divided according to the 3D volumetry of <700 cm3, 700-899 cm3, and ≥900 cm3 to compare the performance of different models. A total of 119 donors were included. Conventional volumetry showed R2 of 0.656 (P < 0.001) while 3D software showed R2 of 0.776 (P < 0.001). The R2 of the multivariable model was 0.842 (P < 0.001) including for 3D volume (β = 0.623, P < 0.001), body mass index (β = 7.648, P < 0.001), and amount of weight loss (β = -7.252, P < 0.001). The median errors between different models and actual graft weight did not differ in donor groups (<700 and 700-899 cm3), while the median error of univariable linear model using 3D software (122.5; interquartile range [IQR], 61.5-179.8) was significantly higher than multivariable-adjusted linear model (41.5; IQR, 24.8-69.8; P = 0.003) in donors with estimated graft weight ≥900 cm3. The univariable 3D volumetry model showed an acceptable outcome for donors with an estimated graft volume <900 cm3. For donors with an estimated graft volume ≥900 cm3, the multivariable-adjusted linear model showed higher accuracy.

Robotic Living Donor Hysterectomy for Uterus Transplantation: An Update on Donor and Recipient Outcomes.

Background/Objectives: Uterus transplantation (UTx) has evolved into a clinical reality for women with absolute uterine infertility. The international experience with UTx has predominantly utilized living donor grafts-and strategies to minimize harm to donors remain paramount. Robotic living donor hysterectomy represents a minimally invasive approach to facilitate rapid donor recovery, improve pelvic visualization and operative access, and maintain UTx recipient outcomes. The aim of this study is to describe donor, recipient, graft, and pregnancy outcomes after adoption of a robotic living donor hysterectomy program. Methods: The Dallas UtErus Transplant Study (DUETS) incorporated a robotic living donor hysterectomy operative protocol, including transvaginal extraction, from April 2019. Prospectively collected data were analyzed, and a case series presented, to describe donor intra- and post-operative outcomes and recipient intra-operative outcomes, graft viability, established pregnancies, and live births. Early cases were compared to later cases to better describe the learning curve associated with the technique. Results: Sixteen robotic living donor hysterectomies were performed with 100% graft viability after implantation demonstrated by myometrial flow and onset of menses. Early experience (eight cases) demonstrated two cases of ureteric injury. Later experience (eight cases) demonstrated a reduction in operative time (11 h 10 min vs. 6 h 38 min), with no ureteric injuries and a reduction in major operative morbidity from 25% to 12.5% (Clavien-Dindo grade ≥3). At the time of reporting, nine successful live births have occurred, with six ongoing pregnancies. Conclusions: Robotic living donor hysterectomy represents a safe approach to minimize donor harm without compromising UTx recipient, graft, and pregnancy-related outcomes. A learning curve is demonstrated with the adoption of the novel technique-with particularly care required to prevent ureteric injuries, and ongoing vigilance and reporting necessary given the small case numbers of robotic living donor hysterectomy reported internationally.