Nutrition management after pediatric solid organ transplantation

Care of Pediatric Solid Organ Transplant Recipients: An Overview for Primary Care Providers

As the number of living pediatric solid organ transplant (SOT) recipients continues to grow, there is an increased likelihood that primary care providers (PCPs) will encounter pediatric SOT recipients in their practices. In addition, as end-stage organ failure is replaced with chronic medical conditions in transplant recipients, there is a need for a comprehensive approach to their management. PCPs can significantly enhance the care of immunosuppressed hosts by advising parents of safety considerations and avoiding adverse drug interactions. Together with subspecialty providers, PCPs are responsible for ensuring that appropriate vaccinations are given and can play an important role in the diagnosis of infections. Through early recognition of rejection and posttransplant complications, PCPs can minimize morbidity. Growth and development can be optimized through frequent assessments and timely referrals. Adherence to immunosuppressive regimens can be greatly improved through reinforcement at every encounter, particularly among adolescents. PCPs can also improve long-term outcomes by easing the transition of pediatric SOT recipients to adult providers. Although guidelines exist for the primary care management of adult SOT recipients, comprehensive guidance is lacking for pediatric providers. In this evidence-based overview, we outline the main issues affecting pediatric SOT recipients and provide guidance for PCPs regarding their management from the first encounter after the transplant to the main challenges that arise in childhood and adolescence. Overall, PCPs can and should use their expertise and serve as an additional layer of support in conjunction with the transplant center for families that are caring for a pediatric SOT recipient.

Nutritional Management and Biochemical Outcomes during the Immediate Phase after Liver Transplant for Methylmalonic Acidemia

Methylmalonic acidemia (MMA) is caused by a deficiency of methyl-malonyl-CoA mutase. It is a multisystemic condition with poor clinical outcomes characterized by frequent metabolic decompensation with acidosis, hyperammonemia and encephalopathy. Restriction of intact protein and supplementation with amino acid-based formula play an important role in its management. Recently, liver transplant (LT) became a treatment option for MMA patients. However, there has been no current consensus on the post-operative nutrition management for MMA patients undergoing transplant, particularly during the initial phase of recovery period with catabolic stressors. We performed a retrospective analysis of clinical and nutritional management as well as biochemical profiles before and after LT in five patients with MMA. Through this study, we observed significant improvement of MMA-associated metabolites after LT. MMA patients were able to tolerate increased intact protein intake post-operatively. At least 1–1.5 g/kg/day of total protein during the acute phase after transplant may be tolerated without worsening of the metabolite levels. This information provides a guide in how to nutritionally manage MMA after LT.

A clinical description of children with solid organ transplants who present with feeding disorder

Pediatric solid organ transplant recipients have long-standing malnutrition concerns related to their pretransplant medical status. The targeted nutrition therapy utilized pre-, peri-, and post-transplantation may have the adverse effect of impeding normally developing feeding skills, particularly in very young children. Little is known about the relationship between transplantation and feeding disorders of childhood. The purpose of this study was to describe severity of feeding disorder and parental stress in patients with transplant compared to children followed in a specialty feeding clinic and the general community. Sixty-four children, comprised of 32 children with solid organ transplant ages 2 months to 12 years and 32 matched control patients diagnosed with a feeding disorder without history of solid organ transplant, were reviewed. All children were from the Feeding, Swallowing, and Nutrition Clinic at a single children's hospital. Findings indicate that patients who received a transplant and presented with a feeding problem had worse symptoms of feeding disorder than are typically found in the general community. These feeding problems disrupt mealtime behavior, caregiver and child relationship within a mealtime context, and may result in maladaptive feeding strategies used by families. When transplanted children present with feeding disorders, they are severe and have multiple effects on both the child and the feeding dynamic between the child and the child's caregivers. Further investigation may help us to better understand the relationship between transplantation and symptoms of feeding disorder.