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Objective The objective of this study was to identify nephrology topics of lowest perceived competency and importance for general paediatricians. Methods Surveys were distributed to general paediatricians, paediatric residents, paediatric residency program directors, and paediatric nephrologists. Perceived importance and competence were rated on a 5-point Likert scale. Means and 95% confidence intervals were calculated. Results Mean perceived competency from general paediatricians across all nephrology domains was 3.0, 95%CI (2.9 to 3.1) and mean importance was 3.2, 95%CI (3.1 to 3.3). Domains scoring below the means for competence and importance, respectively were kidney stones (2.5, 95%CI [2.2 to 2.7]) and 2.6, 95%CI [2.3 to 2.8]), acute kidney injury (2.5, 95%CI [2.2 to 2.8] and 2.4, 95%CI [2.1 to 2.8]), chronic kidney disease (1.9, 95%CI [1.7 to 2.2] and 2.1, 95%CI [1.8 to 2.4]), tubular disorders (1.8, 95%CI [1.6 to 2.0] and 2.0, 95%CI [1.8 to 2.3]), and kidney transplant (1.6, 95%CI [1.4 to 1.8] and 1.7, 95%CI [1.4 to 1.9]). Residents, program directors, and paediatric nephrologists agreed that stones, chronic kidney disease, tubular disorders, and transplant were of lower importance. However, acute kidney injury was the domain with the largest discrepancy in perceived importance between residents (4.4, 95%CI [4.2 to 4.6]), nephrologists (4.2, 95%CI [3.8 to 4.6]), and program directors (4.2, 95%CI [3.7 to 4.7]) compared to general paediatricians ([2.4, 95%CI [2.1 to 2.8]; P<0.05). Conclusion Paediatricians did not believe acute kidney injury was important to their practice, despite expert opinion and evidence of long-term consequences. Educational interventions must address deficits in crucial domains of renal health in paediatrics. [ABSTRACT FROM AUTHOR]

Objectives: High-dose glucocorticoids for remission-induction of ANCA-associated vasculitis are recommended and commonly used in adults, but recent studies suggest lower glucocorticoid doses can reduce toxicity without reducing efficacy. No paediatric-specific data exists to inform optimal glucocorticoid dosing in paediatric ANCA-associated vasculitis (pAAV). Our objectives were to describe glucocorticoid use in pAAV-related renal disease, and to explore associations between glucocorticoid dose, baseline patient characteristics and 12-month outcomes., Methods: Youth <18 years with pAAV, biopsy-confirmed pauci-immune glomerulonephritis and 12-month follow-up data were included from an international paediatric vasculitis registry. Presenting features and 12-month outcomes (eGFR, glucocorticoid-related adverse effects), were compared between patients receiving no, low-moderate (≤90mg/kg) and high (>90mg/kg) cumulative intravenous methylprednisolone (IVMP), and low (<0.5mg/kg/day prednisone equivalent), moderate (0.5-1.5mg/kg/day) and high (>1.5mg/kg/day) starting doses of oral glucocorticoids., Results: Among 131 patients (101 granulomatosis with polyangiitis, 30 microscopic polyangiitis), 27 (21%) received no IVMP, 64 (49%) low-moderate and 29 (22%) high-dose IVMP, while 9 (7%) received low, 75 (57%) moderate and 47 (36%) high initial doses of oral glucocorticoids. Renal failure at diagnosis (p=0.022) and plasmapheresis use (p=0.0001) were associated with high-dose IVMP. Rates of glucocorticoid-related adverse effects ranged from 15-31% across dose levels, and glucocorticoid dosing did not associate with 12-month outcomes., Conclusions: Glucocorticoid dosing for pAAV-related renal disease was highly variable, and rates of adverse effects were high across all dosing groups. A significant proportion of patients received oral glucocorticoid or IVMP doses that were discordant with current adult guidelines. Higher glucocorticoid doses did not associate with improved outcomes.

Objectives: Transitioning from paediatric to adult care can be challenging. Whereas transition models of care have been shared in some rheumatological conditions, reported experience in vasculitis is lacking., Methods: Retrospective chart review of adolescents aged 16-18 years assessed at the vasculitis transition clinic by paediatric and adult rheumatologists, and then scheduled for follow-up at the Adult Vasculitis Clinic (Toronto, Canada) from January 2013 until May 2020., Results: Twenty-eight patients were seen at the transition clinic and included. Mean age at transition was 17 years and 11 (± SD 2) months, with a mean follow up from diagnosis of 32 (± 24) months. Most patients had ANCA-associated vasculitis (N=19, 39%), followed by Takayasu's arteritis (N=4, 14%); all but one were in remission at the time of transition. Twenty-six (93%) patients showed up for their first booked adult visit (two did not, were called and rebooked), after a mean of 4 (± 2) months after transition clinic. Subsequently, two patients missed 1 appointment, and three missed ≥ 2 appointments; only one (4%) stopped coming, while in remission for >2 years post-transition. Five (18%) patients were identified to have medication non-adherence after transition. With a mean follow up post-transition of 32 (± 25) months, 7 (25%) patients had minor and five (18%) had major relapses, at a mean of 17 (± 9) and 25 (± 15) months post-transition, respectively (compared to 12 (43%) and 9 (32%) prior to transition). At their last visit, all were in remission, 18 (64%) off glucocorticoids, and damage had remained stable., Conclusions: This model of care of vasculitis transition clinic resulted in favourable outcomes, as reflected by continuity of follow-up, and no increased risk of relapse.