Unintended Consequences in Use of Increased Risk Donor Kidneys in the New Kidney Allocation Era.

BACKGROUND: The new kidney allocation system (KAS) intends to allocate the top 20% of kidneys to younger recipients with longer life expectancy. We hypothesized that the new KAS would lead to greater allocation of Public Health Service (PHS) increased-risk donor organs to younger recipients. METHODS: Analyses of the Organ Procurement and Transplantation Network data of patients who underwent primary deceased kidney transplantation were performed in pre- and post-KAS periods. RESULTS: The allocation of PHS increased-risk kidney allografts in various age groups changed significantly after implementation of the new KAS, with an increased proportion of younger individuals receiving increased-risk kidneys (7% vs 10% in age group 20-29 y and 13% vs 18% in age group 30-39 y before and after KAS, respectively; P < .0001). This trend was reversed in recipients 50-59 years old, with 31% in the pre-KAS period compared with 26% after KAS (P < .0001). CONCLUSIONS: The new KAS resulted in a substantial increase in allocation of PHS increased-risk kidneys to candidates in younger age groups. Because increased-risk kidneys are generally underutilized, future efforts to optimize the utilization of these organs should target younger recipients and their providers.

Dynamic challenges inhibiting optimal adoption of kidney paired donation: findings of a consensus conference.

While kidney paired donation (KPD) enables the utilization of living donor kidneys from healthy and willing donors incompatible with their intended recipients, the strategy poses complex challenges that have limited its adoption in United States and Canada. A consensus conference was convened March 29-30, 2012 to address the dynamic challenges and complexities of KPD that inhibit optimal implementation. Stakeholders considered donor evaluation and care, histocompatibility testing, allocation algorithms, financing, geographic challenges and implementation strategies with the goal to safely maximize KPD at every transplant center. Best practices, knowledge gaps and research goals were identified and summarized in this document.

Very early recurrence of anti-Phospholipase A2 receptor-positive membranous nephropathy after transplantation.

Membranous nephropathy is a common cause of adult nephrotic syndrome, with recent evidence suggesting that 70% of idiopathic disease is associated with anti-Phospholipase A(2) receptor autoantibodies. We describe a 63-year-old man with membranous nephropathy who underwent a kidney transplant and developed recurrent membranous nephropathy with fine granular co-localization of Phospholipase A(2) receptor and IgG evident on transplant biopsy on day 6 and elevated circulating levels of serum anti-Phospholipase A(2) receptor autoantibody that declined over time in conjunction with improvement in the serum creatinine and urinary protein. This is a very early case of Phospholipase A(2) receptor-associated recurrent membranous nephropathy with circulating anti-Phospholipase A(2) receptor autoantibody, which supports the emerging evidence that idiopathic membranous nephropathy is an autoimmune disease.

A motor milestone change noted with a change in sleep position.

OBJECTIVE: To evaluate whether sleeping in the supine position resulted in changes in gross or fine motor developmental milestones observed at routinely scheduled well-child checkups at 4 or 6 months of age. DESIGN: A retrospective chart review. SETTING: One private pediatric practice involving 2 full-time and 2 part-time board-eligible or board-certified pediatricians. SUBJECTS: The study included 343 full-term infants whose weights were appropriate or large for gestational age, had no history of hospitalization other than for normal newborn care, and were examined in the office for their 4-month well-child checkup within 2 weeks of being 4 months old. METHODS: The Denver Developmental Screening Test-Revised was administrated at the 4- and 6-month well-child checkups. The primary sleep positions of the infants were determined by telephone survey, office interview, or letter after the 6-month checkup was completed. Background data collected from the mother for each mother-infant pair included maternal age at the time of birth, parity, and marital status, Medicaid status and ethnicity of the infant, and whether the infant was breast-fed. RESULTS: Infants who slept in the side or supine position were less likely to roll over at the 4-month checkup than infants who slept primarily in the prone position (P < .001). No significant differences were found when comparison by maternal age, parity, or marital status, Medicaid status or ethnicity of the infant, or the use of breast-feeding were considered. Other motor milestones screened did not show statistically significant changes. CONCLUSIONS: Sleep position significantly influences the age of achieving the gross motor developmental milestone of rolling over; infants who sleep in the side or supine position roll over later than infants who sleep in the prone position.