[Type 1 diabetes in children and adolescents--new strategies in management and treatment]. / Typ-1-Diabetes bei Kindern und Jugendlichen. Neue Strategien in Diagnostik und Therapie.

Type 1 diabetes (T1D) is the most common metabolic disease in childhood with an increasing incidence of about 3 to 5% per year, particularly in preschool children. Despite substantial progresses in diabetes research concerning its pathogenesis and etiology in the last decades, there is no strategy for primary prevention in subjects with subclinical signs of diabetes. Nowadays, it is well-known that T1D is caused by partial or total destruction of pancreatic islet cells, resulting in progressive incapacity to produce insulin. This inflammation is of an autoimmune nature, resulting both from environmental and genetic influences. Children with T1D usually have a several day history of typical symptoms such as frequent urination, excessive thirst and weight loss, which appear when about 80% of the pancreatic beta cells are already destroyed. If those symptoms are misinterpreted, the continuing hyperglycaemic metabolism leads to a potential life-threatening condition the diabetic ketoacidosis. Patients with T1D require daily subcutaneous injections of insulin, with the overall aim to mimic the physiological release of insulin during meal-associated and fasting periods (intensive insulin therapy). The most important parameters to evaluate the effectiveness of insulin treatment are blood glucose monitoring and HbA1c. The increased availability of systems for continuous glucose monitoring may help patients to have a better insight into their metabolic conditions. Sensor-based insulin treatment is likely to have a significant impact on paediatric diabetes therapy and education in the future.

Prerequisites for age-appropriate education in type 1 diabetes: a model programme for paediatric diabetes education in Germany.

Continuous diabetes education for children, adolescents and their parents are widely accepted as an integral part of every type 1 diabetes therapy. Especially in paediatric diabetes care age-appropriate, demand-oriented and individualized practical information and skills training are mandatory for achieving good metabolic control and psychosocial well-being. A paediatric multidisciplinary diabetes team experienced in an intensified insulin therapy with a differential substitution of prandial and basal insulin needs (MDI or CSII) and in child psychology is required to initiate and maintain lifelong diabetes self-management. In Germany an education programme for children aged 6-12 years and another programme for adolescents and young adults have previously been evaluated in multicenter studies. Programmes were considered with respect to applicability, acceptance by target groups and efficacy (knowledge, competence, quality of life and glycaemic control). Furthermore, a programme specifically designed for parents of children affected was evaluated. Contents, modular structures, developmental psychological background and didactic concepts of all above mentioned programmes are presented in detail. Apart from teaching insulin therapy according to current guidelines special emphasis is laid on translating this knowledge into everyday self-management behaviour. In addition, emotional coping with the chronic disease and its psychosocial consequences is supported. In the context of the Disease-Management-Program for Type 1 Diabetes in Germany these programmes for young people were certified and reimbursed nationwide by health insurances.

Current practice of insulin pump therapy in children and adolescents - the Hannover recipe.

Increasing evidence points to the importance of achieving low blood glucose variability and also a low hemoglobin A1c (HbA1c) to prevent diabetic late complications. Continuous subcutaneous insulin infusion (CSII) is associated with lower blood glucose variability in children. Frequent indications for starting CSII in youth are recurrent hypoglycemia, need for increased flexibility, poor glycemic control, dawn phenomenon, or needle phobia. At our center, about one-third of all patients across all age groups are currently on CSII. Although the average glycemic control is not very different from those on multiple daily injections, fewer patients are seen in the segment of very high and very low HbA1c with CSII. Across centers, the 'recipes' tailoring CSII treatment to individual patients and cultures are based more on experience than on evidence. However, several typical pediatric features have been identified. Patterns of the hourly basal rate and prandial insulin requirements vary with age. While many adolescents have increased requirements at dawn and dusk, young children show increasing needs in the second half of the day. Low insulin requirements, particularly in neonates, may need insulin dilution. The selection of catheters and needles has to be appropriate for the age. The opportunity to have an electronic memory read-out of all entries and alarms offers new possibilities of therapeutic monitoring, particularly in those youth not keeping good logbooks. This feature can be helpful, if a trustful relationship between the diabetes team and the family is established.

Experience with insulin analogues in children.

Current data on rapid and long-acting insulin analogues in the paediatric age group is limited. While several studies indicate a benefit in reducing hypoglycaemia, particularly at night, with rapid or long-acting insulin analogue treatment, the effect on long-term glycaemic control remains controversial. The continuous glucose monitoring system offers a new option for tailoring treatment with insulin analogues to achieve optimal glycaemia. In 29 adolescents with diabetes this approach confirmed the non-inferiority of postprandial rapid-acting analogue administration compared to preprandial regular insulin, but revealed significant mealtime differences, with increased analogue requirement at breakfast and dinner. Although rapid- and long-acting insulin analogues may offer potential benefits for problems frequently encountered in paediatric diabetology, their value for the individual child still has to be tested in long-term observations in daily clinical practice.