Neil C. Boudville

Canadian journal of kidney health and disease • December 21, 2024

Amit Garg, Liane Feldman, Jessica Sontrop, Meaghan Cuerden, Jennifer Arnold, Neil Boudville, Martin Karpinski, Scott Klarenbach, Greg Knoll, Charmaine Lok, Eric Mcarthur, Matthew Miller, Mauricio Monroy Cuadros, Kyla Naylor, G Prasad, Leroy Storsley, Christopher Nguan

Some men who donate a kidney have reported testicular pain after donation; however, attribution to donation is not clear as no prior studies included a comparison group of nondonors. To examine the proportion of male donors who reported testicular pain in the years after nephrectomy compared to male nondonors with similar baseline health characteristics. We enrolled 1042 living kidney donors (351 male) before nephrectomy from 17 transplant centers (12 in Canada and 5 in Australia) from 2004 to 2014. A concurrent sample of 396 nondonors (126 male) was enrolled. Follow-up occurred until November 2021. Donors and nondonors completed the same schedule of measurements at baseline (before nephrectomy) and follow-up. During follow-up, participants completed a questionnaire asking whether they had experienced new pain in their eyes, hands, or testicles; those who experienced pain were asked to indicate on which side of the body the pain occurred (left or right). The pain questionnaire was completed by 290 of 351 male donors (83%) and 97 of 126 male nondonors (77%) a median of 3 years after baseline (interquartile range = 2-6). Inverse probability of treatment weighting on a propensity score was used to balance donors and nondonors on baseline characteristics. After weighting, the nondonor sample increased to a pseudo sample of 295, and most baseline characteristics were similar between donors and nondonors. At baseline, donors (n = 290) were a mean age of 49 years; 83% were employed, and 80% were married; 246 (84.8%) underwent laparoscopic surgery and 44 (15.2%) open surgery; 253 (87.2%) had a left-sided nephrectomy and 37 (12.8%) a right-sided nephrectomy. In the weighted analysis, the risk of testicular pain was significantly greater among donors than nondonors: 51/290 (17.6%) vs 7/295 (2.3%); weighted risk ratio, 7.8 (95% confidence interval [CI] = 2.7 to 22.8). Donors and nondonors did not differ statistically in terms of self-reported eye pain or hand pain. Among donors, the occurrence of testicular pain was most often unilateral (92.2%) and on the same side as the nephrectomy (90.2%). Testicular pain occurred more often in donors who had laparoscopic vs open surgery: 48/246 (19.5%) vs 3/44 (6.8%) but was similar in those who had a left-sided vs right-sided nephrectomy: 44/253 (17.4%) vs 7/37 (18.9%). Participants recalled their symptoms several years after baseline, and we did not assess the timing, severity, or duration of pain or any treatments received for the pain. Unilateral testicular pain on the same side of a nephrectomy is a potential complication of living kidney donation that warrants further investigation.

BMJ Open • May 02, 2025

Joanne Beer, Angela Jacques, Kelly Lambert, Wai Lim, Martin Howell, Neil Boudville

Background: Diet and nutrition play a vital role in all stages of chronic kidney disease (CKD) prevention, treatment and management. In particular, dietary interventions are essential to manage hyperphosphataemia, a common metabolic complication in CKD consistently associated with an increased risk of cardiovascular disease and all-cause morbidity and mortality. Unfortunately, dietary management of any kind in this cohort of patients also comes with the added challenge of limited and variable access to renal dietitians, logistical difficulties and multiple medical appointments. Given the complexity of managing diet in patients on dialysis, there is a need for novel interventions that not only help patients navigate daily challenges but could also be integrated into clinical practice to support the work of dietitians. We are testing if the use of digital health (via a new, specifically designed smartphone App) plus standard care compared to standard care alone is a feasible and effective method of delivering nutritional advice to patients with elevated phosphate levels undertaking dialysis. Methods: This is a multicentre codesigned randomised controlled trial (RCT) that will recruit individuals aged 18 years or over on maintenance dialysis for a minimum of 3 months who have a serum phosphate level of ≥1.6 mmol/L. Participants will be recruited from 23 different dialysis sites across Australia. They will be block randomised into two groups in a 1:1 ratio that will either be the intervention group (receive the TeleKinesis App for 3 months in addition to standard care) or the control group (standard care alone). The primary outcome of the study is to assess the effect of this intervention on the change in patients' serum phosphate levels. The RCT will assess the effectiveness of the programme by comparing serum phosphate at baseline, 3 months and follow-up at 6 months. A total recruitment target of n=180 participants is expected. Background: Ethics approval was received from the Sir Charles Gairdner and Osborne Park Health Care Group Human Research Ethics Committee on 5 December 2022 (reference RGS0000005559). Informed consent will be given by participants once they have read and signed the patient information and consent form. The results are expected to be published in scientific journals and presented at clinical research conferences and to the consumers who have taken part in the trial. This is protocol 1.0 dated 10 November 2024. Background: ACTRN12621000746831.

Kidney International Reports • December 14, 2024

Sneha Amin, Irene Sangadi, Margaret Allman Farinelli, Neil Boudville, Imad Haloob, David C Harris, Carmel Hawley, David Johnson, Vincent Lee, Jun Mai, Anna Rangan, Simon Roger, Kamal Sud, Eswari Vilayur, Gopala Rangan

Clinical practice guidelines suggest maintaining adequate hydration in people with autosomal dominant polycystic kidney disease (ADPKD). However, the long-term perceptions of increasing water intake and the role of self-efficacy tools are unknown. Participants randomized to the increased water intake arm in a 3-year trial were purposively sampled and invited to semistructured interviews at the end of the study. In addition, all participants (n = 78) in the increased water intake arm were invited to complete a posttrial questionnaire. Fifteen participants completed the interview and 48 (61.5%) completed the questionnaire. Participants were motivated to adhere to the increased water intake at the start of the trial, but it became more difficult over time. Approximately half of the participants found that it was "easy" to meet fluid intake goals without interfering with their lifestyle. The main barrier was "loss of control" particularly when implementing increased water intake at social events. Furthermore, participants' somatic and emotional state undermined motivation. Regarding self-efficacy tools, the act of carrying water bottles was considered most useful for monitoring intake; self-monitoring urine specific gravity provided positive reinforcement, and mobile phone text message reminders maintained engagement. At the end of the trial, most participants had established knowledge and habits required to increase water intake but the motivation to continue long-term was contingent on a medical benefit. Habit formation to increase water intake was perceived as relatively uncomplicated by most participants. However, the gap between intention and behavior fluctuated because of intermittent social barriers and widened over time.

Peritoneal Dialysis International : Journal Of The International Society For Peritoneal Dialysis • November 11, 2024

Emma Elphick, Karine Manera, Andrea Viecelli, Jonathan Craig, Yeoungjee Cho, Angela Ju, Jenny Shen, Martin Wilkie, Samaya Anumudu, Neil Boudville, Josephine Chow, Simon Davies, Patricia Gooden, Tess Harris, Arsh Jain, Adrian Liew, Andrea Matus Gonzalez, Noa Amir, Annie-claire Nadeau Fredette, Thu Nguyen, Angela Wang, Daniela Ponce, Rob Quinn, Alison Jaure, David Johnson, Mark Lambie

BackgroundTechnique survival, also reported with negative connotations as technique failure or transfer from peritoneal dialysis to haemodialysis, has been identified by patients, caregivers and health professionals as a critically important outcome to be reported in all trials. However, there is wide variation in how peritoneal dialysis technique survival is defined, measured and reported, leading to difficulty in comparing or consolidating results.MethodsWe conducted an online international consensus workshop to establish a core outcome measure of technique survival. Discussions were analysed thematically.ResultsFifty-five participants including 14 patients and caregivers from 13 countries took part in facilitated breakout discussions using video-conferencing. The following themes were identified: capturing important aspects of the outcome (requiring a core event to define the outcome, distinguishing temporary from permanent events, recognising heterogeneous experiences of transfers), adopting appropriate neutral nomenclature (conveying with clarity, avoiding negative connotations), and ensuring feasibility and applicability (capturing data relevant to clinical and research settings, ease of adoption). The suggested definitions for the core outcome measure were 'the event of a transfer to haemodialysis', or 'discontinuation of peritoneal dialysis'. Applying the principles described within the workshop, defining the outcome measure as a 'transfer to haemodialysis' was preferable.ConclusionsIt is proposed that the core outcome of technique survival is redefined as 'transfer to haemodialysis' and that its components are standardised using simple, neutral terminology Components considered important by stakeholders included recording the reasons for transfer from peritoneal dialysis, and focussing on permanent events whilst ensuring the outcome remains easy to implement.

Clinical Kidney Journal • August 29, 2024

Jenny H Chen, David Johnson, Matthew Roberts, Mark Brown, Frank Brennan, Germaine Wong, Hicham Hassan, Wing-chi Yeung, Alice Kennard, Christopher Davies, Neil Boudville, Charmaine Lok, Wai Lim

Patients receiving haemodialysis via a central venous catheter (HD-CVC) have been shown to have an increased risk of all-cause mortality. It is unclear whether death from dialysis withdrawal is associated with the high mortality risk observed in patients initiated on HD-CVC. Using the Australia and New Zealand Dialysis and Transplant (ANZDATA) Registry, we examined the association between initial dialysis access [HD-CVC, haemodialysis via arteriovenous fistula (HD-AVF), and peritoneal dialysis (PD) via PD catheter (PD-PDC)] and death from dialysis withdrawal in adult patients starting dialysis in Australia between 2005 and 2022, analysed by time-stratified adjusted Cox regression with propensity score-matched cohorts. Of 47 412 incident patients followed for a median of 2.65 years (interquartile range 1.19-4.87), 8170 (17%) died from dialysis withdrawal. Compared with patients initiated on HD-AVF, patients initiated on HD-CVC were more likely to experience death from dialysis withdrawal in the first 3 years after dialysis initiation, but not after 3 years [adjusted hazard ratios 2.43 (95% confidence interval 1.95-3.02), 2.06 (1.67-2.53), 1.57 (1.40-1.76), and 1.06 (0.97-1.15) for 0-6 months, >6-12 months, >1-3 years, and >3 years after dialysis initiation, respectively]. Comparison between patients initiated on HD-CVD and PD-PDC showed similar estimates. No difference in withdrawal risk was observed between patients initiated on HD-AVF and PD-PDC. Patients initiated on HD-CVC were twice as likely to experience early death from dialysis withdrawal compared with patients who had initiated dialysis with HD-AVF or PD-PDC. The increased risks diminished over time and were not observed after 3 years on dialysis.