Mood, body image, fear of kidney failure, life satisfaction, and decisional stability following living kidney donation: Findings from the KDOC study

Living Kidney Donation: A Narrative Review of Mid- and Long-term Psychosocial Outcomes

Living kidney donors make a significant contribution to alleviating the organ shortage. The aim of this article is to provide an overview of mid- and long-term (≥12 mo) living donor psychosocial outcomes and highlight areas that have been understudied and should be immediately addressed in both research and clinical practice. We conducted a narrative review by searching 3 databases. A total of 206 articles were included. Living donors can be divided into those who donate to an emotionally or genetically related person, the so-called directed donors, or to an emotionally or genetically unrelated recipient, the so-called nondirected donors. The most commonly investigated (bio)psychosocial outcome after living donation was health-related quality of life. Other generic (bio)psychological outcomes include specific aspects of mental health such as depression, and fatigue and pain. Social outcomes include financial and employment burdens and problems with insurance. Donation-specific psychosocial outcomes include regret, satisfaction, feelings of abandonment and unmet needs, and benefits of living kidney donation. The experience of living donation is complex and multifaceted, reflected in the co-occurrence of both benefits and burden after donation. Noticeably, no interventions have been developed to improve mid- or long-term psychosocial outcomes among living donors. We highlight areas for methodological improvement and identified 3 areas requiring immediate attention from the transplant community in both research and clinical care: (1) recognizing and providing care for the minority of donors who have poorer long-term psychosocial outcomes after donation, (2) minimizing donation-related financial burden, and (3) studying interventions to minimize long-term psychosocial problems.

Psychosocial Evaluation of Living Kidney Donors: A Survey of Current Practices in the United States

BACKGROUND

Best practices in psychosocial evaluation and care of living donor candidates and donors are not well established.

METHODS

We surveyed 195 living kidney donor (LKD) transplant centers in United States from October 2021 to April 2022 querying (1) composition of psychosocial teams, (2) evaluation processes including clinical tools and domains assessed, (3) selection criteria, and (4) psychosocial follow-up post-donation.

RESULTS

We received 161 responses from 104 programs, representing 53% of active LKD programs and 67% of LKD transplant volume in 2019. Most respondents (63%) were social workers/independent living donor advocates. Over 90% of respondents indicated donor candidates with known mental health or substance use disorders were initially evaluated by the psychosocial team. Validated psychometric or transplant-specific tools were rarely utilized but domains assessed were consistent. Active suicidality, self-harm, and psychosis were considered absolute contraindications in >90% of programs. Active depression was absolute contraindication in 50% of programs; active anxiety disorder was excluded 27%. Conditions not contraindicated to donation include those in remission: anxiety (56%), depression (53%), and posttraumatic stress disorder (41%). There was acceptance of donor candidates using alcohol, tobacco, or cannabis recreationally, but not if pattern met criteria for active use disorder. Seventy-one percent of programs conducted post-donation psychosocial assessment and use local resources to support donors.

CONCLUSIONS

There was variation in acceptance of donor candidates with mental health or substance use disorders. Although most programs conducted psychosocial screening post-donation, support is not standardized and unclear if adequate. Future studies are needed for consensus building among transplant centers to form guidelines for donor evaluation, acceptance, and support.

Non-directed (altruistic) kidney donation: Altruism or insurance policy?

INTRODUCTION

Since non-directed (altruistic) kidney donors do not stand to benefit from the lengthening and strengthening of a relationship that they intrinsically value, their donations are considered to constitute the most altruistic variety of living kidney donation.

METHODOLOGY

This paper uses publicly-available data to assess the expected value that accrues to the donor of altruistic kidney donation.

FINDINGS

Compared to healthy non-donors, living kidney donors experience only marginally increased absolute risks of poor physical health outcomes, and no difference in important psychosocial health outcomes. Crucially, the chance of requiring a kidney donation is only marginally increased by becoming a living kidney donor. In the United Kingdom, previous living kidney donors that subsequently become in need of any organ donation (not only kidneys) themselves are considered priority patients for these donations. They consequently experience shorter waiting times for these organs and reduced exposure to the inherently harmful effects of dialysis therapy (if a kidney donation is required) compared to non-donors in need of organ donation. As such, while key data points required to compute an accurate and complete expected value calculation are unavailable, it is likely that the additional risk incurred by becoming a living kidney donor is outweighed by the benefit of being considered a priority patient for the donation of any type of organ in the event that this is needed.

CONCLUSION

Accordingly, the expected value of becoming a living kidney donor is likely to be positive, meaning the act of doing so may be considered akin to the taking out of an insurance policy. In the context of non-directed (altruistic) kidney donation, this may diminish the extent to which such a donation is considered altruistic.

Robotic-assisted versus laparoscopic living donor nephrectomy for renal transplantation: a systematic review and meta-analysis

INTRODUCTION

Renal transplantation remains the definitive treatment for end-stage renal disease. Currently employed minimally invasive techniques include robotic-assisted laparoscopy and laparoscopy. This study aims to determine whether either method provides an advantage.

METHODS

Following PRISMA guidelines, a systematic review was conducted. Data were analysed using Review Manager 5.3.

RESULTS

A total of 12 studies were included. Operative time and operative bleeding were similar between both approaches, with a mean difference (MD) of 16min (95% confidence interval (CI) -4.06, 37.38; p = 0.11) and 10.44ml (95% CI -43.89, 64.78; p = 0.71), respectively. Robotics had longer warm ischemia time (MD 1.14min; 95% CI 0.65, 1.63; p = 0.00001) but reduced length of stay (LOS) (MD -0.23days; 95% CI -0.45, -0.01; p = 0.04) and pain (MD -1.26 VAS; 95% CI -1.77, 0.75). Similar complication and conversion rates were seen among groups.

CONCLUSIONS

Robotic approaches provide a viable alternative to laparoscopic surgery. Operative time, bleeding volumes, complications and conversion rates are similar between both techniques; apparent robotic advantages on LOS and Pain need to be better analysed by future studies.

The Living Kidney Donor Safety Study: Protocol of a Prospective Cohort Study

Background

Living kidney donation is considered generally safe in healthy individuals; however, there is a need to better understand the long-term effects of donation on blood pressure and kidney function.

Objectives

To determine the risk of hypertension in healthy, normotensive adults who donate a kidney compared with healthy, normotensive non-donors with similar indicators of baseline health. We will also compare the 2 groups on the rate of decline in kidney function, the risk of albuminuria, and changes in health-related quality of life.

Design Participants and Setting

Prospective cohort study of 1042 living kidney donors recruited before surgery from 17 transplant centers (12 in Canada and 5 in Australia) between 2004 and 2014. Non-donor participants (n = 396) included relatives or friends of the donor, or donor candidates who were ineligible to donate due to blood group or cross-match incompatibility. Follow-up will continue until 2021, and the main analysis will be performed in 2022. The anticipated median (25th, 75th percentile, maximum) follow-up time after donation is 7 years (6, 8, 15).

Measurements

Donors and non-donors completed the same schedule of measurements at baseline and follow-up (non-donors were assigned a simulated nephrectomy date). Annual measurements were obtained for blood pressure, estimated glomerular filtration rate (eGFR), albuminuria, patient-reported health-related quality of life, and general health.

Outcomes

Incident hypertension (a systolic/diastolic blood pressure ≥ 140/90 mm Hg or receipt of anti-hypertensive medication) will be adjudicated by a physician blinded to the participant's donation status. We will assess the rate of change in eGFR starting from 12 months after the nephrectomy date and the proportion who develop an albumin-to-creatinine ratio ≥3 mg/mmol (≥30 mg/g) in follow-up. Health-related quality of life will be assessed using the 36-item RAND health survey and the Beck Anxiety and Depression inventories.

Limitations

Donation-attributable hypertension may not manifest until decades after donation.

Conclusion

This prospective cohort study will estimate the attributable risk of hypertension and other health outcomes after living kidney donation.

Influence of Self-Determination and Social Support on Post-Traumatic Growth among Living Kidney Donors: A Cross-Sectional Study

Background and Objectives: Although many studies have reported that kidney donation is not physically harmful to living kidney donors, there are few studies on the psychological changes that they experience, especially post-traumatic growth. This study aimed to investigate the influence of self-determination and social support on post-traumatic growth among living kidney donors. Materials and Methods: This study used a descriptive, cross-sectional design. Data were collected from 114 living kidney donors who visited the outpatient solid organ transplant center at Seoul National University Hospital. The data were analyzed using the t-test, one-way analysis of variance, and stepwise multiple regression. Results: The results showed that the mean for post-traumatic growth of living kidney donors was 4.24 (0.81), a level higher than the midpoint. The factors affecting total post-traumatic growth were the relatedness of self-determination, the social support of their significant other, and donor type. In particular, the relatedness of self-determination was a significant factor affecting changed perceptions of self, relating to others, and spiritual change, subscales of post-traumatic growth. Additionally, the social support of donors’ significant others was a significant factor affecting relating to others and new possibilities, subscales of post-traumatic growth. Conclusions: Healthcare providers should endeavor to help living kidney donors experience post-traumatic growth, which can be facilitated by improving their self-determination and social support.

Apolipoprotein L1 Opinions of African American Living Kidney Donors, Kidney Transplant Patients, and Nonpatients

INTRODUCTION

The discovery of apolipoprotein L1 (ApoL1) has raised important ethical and clinical questions about genetic testing in the context of living and deceased kidney donation. Largely missing from this discussion are the perspectives of those African Americans (AA) most likely to be impacted by ApoL1 testing.

METHODS

We surveyed 331 AA potential and former living kidney donors (LKDs), kidney transplant candidates and recipients, and nonpatients at three United States transplant programs about their ApoL1 testing attitudes.

RESULTS

Overall, 72% felt that transplant programs should offer ApoL1 testing to AA potential LKDs. If a potential LKD has the high-risk genotype, 79% felt that the LKD should be allowed to make their own donation decision or participate in shared decision-making with transplant doctors. More than half of the potential LKDs (58%) would undergo ApoL1 testing and 81% of former LKDs would take the test now if offered. Most transplant candidates expressed a low likelihood of accepting a kidney from a LKD (79%) or a deceased donor (67%) with the high-risk genotype.

CONCLUSIONS

There is strong support among LKDs and transplant patients for ApoL1 testing when evaluating potential kidney donors of African ancestry. Inclusion of AA stakeholders in developing guidelines and educational programs for ApoL1 testing is critical.

Mental Health and Well-Being of Solid Organ Transplant Donors. The Forgotten Sacrifices

In light of a global organ shortage, living donor transplantation has become increasingly relevant as an alternative to deceased donor transplantation. While current research has revolved around the medical aspects of transplantation, there remains a paucity of literature regarding the quality of life (QOL) of living donors. Hence, this review aims to provide a comprehensive outline of the current landscape of living liver and kidney transplantation, with a focus on the mental health and wellbeing of donors. As highlighted in previous studies, organ donation has a significant impact on both physical and mental aspects of donor wellbeing, with marked deteriorations occurring in the short term. Furthermore, other qualitative aspects such as financial burden contribute greatly to donor distress, reflecting a need for improved donor care. To address these pertinent issues, recommendations for a successful transplant program are detailed in this review, which encompasses psychological and social aspects of donor care throughout the donation process. Further research can be done on the impact of recipient deaths on donor QOL and appropriate interventions. Overall, given the selfless sacrifices of living donors, the care of their mental wellbeing is essential. Therefore, greater emphasis should be placed on the provision of adequate psychosocial support for them.

The Effect of Psychiatric History on Pain and Related Outcomes Among Living Kidney Donors

INTRODUCTION

Living donor transplantation of kidneys accounts for one quarter of transplants performed in the United States. Careful screening of psychiatric history is a standard part of the donor evaluation. Little is known about the impact of psychiatric history on post-donation course and pain experience.

RESEARCH QUESTION

This study investigated whether psychiatric history was associated with pain and related outcomes among living kidney donors.

DESIGN

A retrospective medical record review was conducted of 75 living kidney donors who underwent laparoscopic donor nephrectomy. All donor candidates completed a psychological evaluation and were approved for donation by a multidisciplinary committee. History of psychiatric diagnosis and psychiatric medication use were obtained from donors' psychological evaluation reports. Data on pain and related outcomes (ie, history of prescribed pain medication, post-donation pain, opioid use, length of hospital stay, post-donation emergency department visits), as well as demographic and donation-related characteristics were also abstracted from medical records.

RESULTS

Psychiatric history, including current or historical psychiatric diagnosis or psychiatric medication use, in living kidney donors who were evaluated and approved for donation by a transplant psychologist was not associated with greater perceived pain, greater use of opioid pain medication in the post-operative period, longer hospital stays, or more frequent post-donation emergency department visits.

DISCUSSION

The findings demonstrate that carefully screened donors with a psychiatric history have comparable pain-related outcomes as donors without a psychiatric history. This study highlights the importance of the pre-donation psychological evaluation in promoting positive postdonation outcomes through careful selection of donor candidates.

Depression, anxiety, and associated psychological outcomes in living organ transplant donors: A systematic review

With increasing demands for living organ donations, understanding the prevalence of depression and anxiety, which are the commonest psychiatric disorders in donors following organ transplantation, will serve to improve psychiatric care to safeguard donors' mental wellbeing. This descriptive systematic review examines all observational studies in English investigating prevalence of depression and anxiety in adult transplant donors using bibliographic databases. Sixty-two papers were included (kidney, n = 25; liver, n = 25; bone marrow, n = 7; uterus, n = 2; lung, n = 1; kidney and lung concurrently, n = 2). Post-transplantation depression and anxiety prevalence rates (Depression: 0-46.9%, Anxiety: 0-66.7%) did not differ significantly from pre-transplantation and were largely comparable to the general population. Other psychiatric disorders observed included bipolar disorder, conversion disorder, adjustment disorder and sleep disorder. Other psychological outcomes observed included lower quality of life, lower satisfaction of life and regret after donation. Pre-donation risk factors such as poor physical/psychological health status, and post-donation risk factors such as complicated post-surgical recovery and poor physical/psychological health in recipients were identified, predisposing donors to poor psychological outcomes. Individuals with risk factors should be monitored and provided with social support, psychoeducation, psychotherapy and long-term follow up. Future studies should adopt consistent methodological approaches to improve comparability between various studies. More research investigating poor psychological outcomes in other organ donors besides kidney and liver donors, donors who have past psychiatric history, unrelated and parent donors is warranted.

Ethical Challenges in Dialysis and Transplantation: Perspectives From the Developing World

Renal replacement therapies including dialysis and transplantation for patients with end-stage kidney failure are treatment options beyond the reach of a large segment of the population, particularly in resource-constrained settings. Health care professionals practicing within developing countries face unique ethical issues in the provision of these treatment options despite the existence of free treatment at different centers. Apart from issues of accessibility of dialysis services, initiation of treatment can have disastrous consequences for the entire family unit, which is magnified in collectivist societies. Several cost-cutting measures also may have to be used that raise moral dilemmas for physicians. Although transplantation is considered the most cost-effective solution in developing countries, leading to significantly better quality of life, issues of consent from biologically related living donors and the use of marginal donors may place physicians in a quandary. Policy making in developing countries must consider the socioeconomic implications of treatment choices that extend far beyond the treatment cost.

Experiencing one's own body and body image in living kidney donors-A sociological and psychological study

BACKGROUND

The aim of the study was to perform an in-depth exploratory analysis of the experience and image of one's body among living kidney donors.

METHOD

The research was carried out using mixed methodology. The study on experiencing one's own body was carried out using the sociological methodology of the grounded theory (qualitative research). This method was supplemented with psychometric measurement-the Body Esteem Scale (quantitative research). The basic research method was the in-depth interview. Using this method, a group of 25 living kidney donors who had not experienced any serious health or psychological problems after donation was examined. The participants of the study came from three transplant centers in Poland.

RESULTS

The data from the sociological interviews indicate that the donors: 1. do not experience radical changes in the functioning of their body; 2. maintain full control over it and do not feel the absence of a kidney in the body; 3. consciously and reflectively take care of their body after donation. In addition, the sociological research indicates that caring for one's own body also includes the transferred organ. The kidney donors experience a kind of bodily identity extension, including the recipient's body. However, the personal and social identity of the studied kidney donors is not disturbed in any way. The psychometric data correspond to the sociological results and indicate: 1. a lack of extreme emotional assessments about one's body; 2. awareness of one's own body and consistency of its image; 3. reduced emotional assessment of body zones directly related to the surgery; 4. differences in body image between the sexes.

CONCLUSIONS

The research results presented in the text indicate not only the possibility, but also the need for triangulation of research methods in the study of the experience and image of one's own body in living kidney donors. The proposed research approach employing mixed methodology within the fields of sociology and psychology for researching the phenomenon of living kidney donation is not very common.

The Spanish Version of the Fear of Kidney Failure Questionnaire: Validity, Reliability, and Characterization of Living Donors With the Highest Fear of Kidney Failure

Background.

Measures of fear of progression or recurrence of illnesses have been criticized for neglecting cross-cultural validity. Therefore, we assessed the psychometric properties of the Spanish version of the Fear of Kidney Failure Questionnaire (FKFQ), to determine whether postdonation fear of kidney failure (FKF) influenced the donors’ psychosocial status, and define variables that characterized donors with high FKFQ scores.

Methods.

We included 492 participants (211 donors) in a multicenter, 11-year, retrospective, cross-sectional study. Donors were classified with a Latent Class Analysis of the FKFQ-item scores and characterized with a multivariable logistic regression analysis. We calculated the risk ratio based on predicted marginal probabilities.

Results.

The Spanish version of the FKFQ showed acceptable psychometric properties. FKF was uncommon among donors, but we detected a small subgroup (n = 21, 9.9%) with high FKF (mean FKFQ score = 14.5, 3.1 SD). Compared with other donors, these donors reported higher anxiety and depression (38% and 29% of potential anxiety and depressive disorders), worse quality of life, and less satisfaction with the donation. Donors with high FKFQ scores were characterized by higher neuroticism combined with postdonation physical symptoms that interfered with daily activities.

Conclusions.

The FKFQ was cross-culturally valid, and thus, it may be used to assess the FKF in Spanish-speaking donors. New interventions that promote positive affectivity and evidence-based treatments for worry could be adapted for treating FKF.

Ethical challenges in nephrology: a call for action

The American Society of Nephrology, the European Renal Association-European Dialysis and Transplant Association and the International Society of Nephrology Joint Working Group on Ethical Issues in Nephrology have identified ten broad areas of ethical concern as priority challenges that require collaborative action. Here, we describe these challenges - equity in access to kidney failure care, avoiding futile dialysis, reducing dialysis costs, shared decision-making in kidney failure care, living donor risk evaluation and decision-making, priority setting in kidney disease prevention and care, the ethical implications of genetic kidney diseases, responsible advocacy for kidney health and management of conflicts of interest - with the aim of highlighting the need for ethical analysis of specific issues, as well as for the development of tools and training to support clinicians who treat patients with kidney disease in practising ethically and contributing to ethical policy-making.

Pain expectancy, prevalence, severity, and patterns following donor nephrectomy: Findings from the KDOC Study

Postoperative pain is an outcome of importance to potential living kidney donors (LKDs). We prospectively characterized the prevalence, severity, and patterns of acute or chronic postoperative pain in 193 LKDs at six transplant programs. Three pain measurements were obtained from donors on postoperative Day (POD) 1, 3, 7, 14, 21, 28, 35, 41, 49, and 56. The median pain rating total was highest on POD1 and declined from each assessment to the next until reaching a median pain-free score of 0 on POD49. In generalized linear mixed-model analysis, the mean pain score decreased at each pain assessment compared to the POD3 assessment. Pre-donation history of mood disorder (adjusted ratio of means [95% confidence interval (CI)]: 1.40 [0.99, 1.98]), reporting "severe" on any POD1 pain descriptors (adjusted ratio of means [95% CI]: 1.47 [1.12, 1.93]) and open nephrectomy (adjusted ratio of means [95% CI]: 2.61 [1.03, 6.62]) were associated with higher pain scores across time. Of the 179 LKDs who completed the final pain assessment, 74 (41%) met criteria for chronic postsurgical pain (CPSP), that is, any donation-related pain on POD56. Study findings have potential implications for LKD education, surgical consent, postdonation care, and outcome measurements.

Changes in Muscle Quality and Body Composition 1 Year After Hand-Assisted Laparoscopic Donor Nephrectomy in Living Kidney Donors

OBJECTIVES

Our aim was to investigate effects of surgery on living donors' body composition and clarify factors related to it.

MATERIALS AND METHODS

We evaluated preoperative computed tomography images of 335 living kidney donors (127 men, 209 women) to calculate 3 body composition parameters and changes with aging by sex: (1) skeletal muscle mass, quantified by skeletal muscle index; (2) fat distribution, calculated by visceral adipose tissue/subcutaneous adipose tissue ratio; and (3) muscle quality, quantified by intramuscular adipose tissue content. Thereafter, with pre- and postoperative computed tomography images from 75 living kidney donors (25 men, 50 women) after hand-assisted laparoscopic donor nephrectomy, we compared pre- and postoperative body composition changes.

RESULTS

Annual change in intramuscular adipose tissue content with age was 0.0049 in men and 0.0091 in women. Of 75 patients, 49 had lower quality of muscle, intramuscular adipose tissue content was significantly higher after nephrectomy (P < .001), and median change in intramuscular adipose tissue content was 0.061 (range, 0.018-0.11) in men and 0.052 (range, 0.017-0.18) in women. Univariate analysis revealed that skeletal mass index and visceral adipose tissue/subcutaneous adipose tissue ratio changes were significantly different between the intramuscular adipose tissue content improvement and deterioration groups. Multivariate analysis revealed skeletal mass index change was an independent factor for intramuscular adipose tissue content change (P = .0019). Intramuscular adipose tissue content change was negatively correlated with skeletal mass index change (r = -0.40).

CONCLUSIONS

Although muscle quality deteriorates after nephrectomy, maintaining muscle mass is important to retaining muscle quality.

Kidney Dyads: Caregiver Burden and Relationship Strain Among Partners of Dialysis and Transplant Patients

BACKGROUND

Caring for dialysis patients is difficult, and this burden often falls on a spouse or cohabiting partner (henceforth referred to as caregiver-partners). At the same time, these caregiver-partners often come forward as potential living kidney donors for their loved ones who are on dialysis (henceforth referred to as patient-partners). Caregiver-partners may experience tangible benefits to their well-being when their patient-partner undergoes transplantation, yet this is seldom formally considered when evaluating caregiver-partners as potential donors.

METHODS

To quantify these potential benefits, we surveyed caregiver-partners of dialysis patients and kidney transplant (KT) recipients (N = 99) at KT evaluation or post-KT. Using validated tools, we assessed relationship satisfaction and caregiver burden before or after their patient-partner's dialysis initiation and before or after their patient-partner's KT.

RESULTS

Caregiver-partners reported increases in specific measures of caregiver burden (P = 0.03) and stress (P = 0.01) and decreases in social life (P = 0.02) and sexual relations (P < 0.01) after their patient-partner initiated dialysis. However, after their patient-partner underwent KT, caregiver-partners reported improvements in specific measures of caregiver burden (P = 0.03), personal time (P < 0.01), social life (P = 0.01), stress (P = 0.02), sexual relations (P < 0.01), and overall quality of life (P = 0.03). These improvements were of sufficient impact that caregiver-partners reported similar levels of caregiver burden after their patient-partner's KT as before their patient-partner initiated dialysis (P = 0.3).

CONCLUSIONS

These benefits in caregiver burden and relationship quality support special consideration for spouses and partners in risk-assessment of potential kidney donors, particularly those with risk profiles slightly exceeding center thresholds.

Patterns and predictors of fatigue following living donor nephrectomy: Findings from the KDOC Study

This study sought to identify the prevalence, pattern, and predictors of clinical fatigue in 193 living kidney donors (LKDs) and 20 healthy controls (HCs) assessed at predonation and 1, 6, 12, and 24 months postdonation. Relative to HCs, LKDs had significantly higher fatigue severity (P = .01), interference (P = .03), frequency (P = .002), and intensity (P = .01), and lower vitality (P < .001), at 1-month postdonation. Using published criteria, significantly more LKDs experienced clinical fatigue at 1 month postdonation, compared to HCs, on both the Fatigue Symptom Inventory (60% vs. 37%, P < .001) and SF-36 Vitality scale (67% vs. 16%, P < .001). No differences in fatigue scores or clinical prevalence were observed at other time points. Nearly half (47%) reported persistent clinical fatigue from 1 to 6 months postdonation. Multivariable analyses demonstrated that LKDs presenting for evaluation with a history of affective disorder and low vitality, those with clinical mood disturbance and anxiety about future kidney failure after donation, and those with less physical activity engagement were at highest risk for persistent clinical fatigue 6 months postdonation. Findings confirm inclusion of fatigue risk in existing OPTN informed consent requirements, have important clinical implications in the care of LKDs, and underscore the need for further scientific examination in this population.

Risks of Living Kidney Donation: Current State of Knowledge on Outcomes Important to Donors

In the past decade, there have been increasing efforts to better define and quantify the short- and long-term risks of living kidney donation. Recent studies have expanded upon the previous literature by focusing on outcomes that are important to potential and previous donors, applying unique databases and/or registries to follow large cohorts of donors for longer periods of time, and comparing outcomes with healthy nondonor controls to estimate attributable risks of donation. Leading outcomes important to living kidney donors include kidney health, surgical risks, and psychosocial effects of donation. Recent data support that living donors may experience a small increased risk of severe CKD and ESKD compared with healthy nondonors. For most donors, the 15-year risk of kidney failure is <1%, but for certain populations, such as young, black men, this risk may be higher. New risk prediction tools that combine the effects of demographic and health factors, and innovations in genetic risk markers are improving kidney risk stratification. Minor perioperative complications occur in 10%-20% of donor nephrectomy cases, but major complications occur in <3%, and the risk of perioperative death is <0.03%. Generally, living kidney donors have similar or improved psychosocial outcomes, such as quality of life, after donation compared with before donation and compared with nondonors. Although the donation process should be financially neutral, living kidney donors may experience out-of-pocket expenses and lost wages that may or may not be completely covered through regional or national reimbursement programs, and may face difficulties arranging subsequent life and health insurance. Living kidney donors should be fully informed of the perioperative and long-term risks before making their decision to donate. Follow-up care allows for preventative care measures to mitigate risk and ongoing surveillance and reporting of donor outcomes to inform prior and future living kidney donors.