Assessment of the functional state of the microvasculature in children with diabetes mellitus type 1

Objective: to assess the functional state of the microvasculature in children with diabetes mellitus type 1 (DM type 1).

Materials and methods: 63 children with a verifi ed diagnosis of diabetes mellitus type 1 were examined. Th e control group consisted of 30 practically healthy children. Methods: clinical, paraclinical (determination of glycated hemoglobin level, study of microcirculation indicators using laser Doppler fl owmetry (LDF), statistical.

Results: microcirculatory disorders accompanying the course of diabetes mellitus type 1 depending on the length of illness were identifi ed. In children with diabetes mellitus type 1 with standing less than 3 years an increase in the average modulation of blood fl ow mainly due to passive regulation mechanisms and the predominance of hypera adaptation in assessing the functional states of microcirculation of varying severity with an increase in the energy of oscillatory processes were observed. Signs of non-nutritive hyperemia in the zone rich in arteriovenous anastamoses and a decrease in perfusion due to an increase in perfusion fl uctuations and coeffi cient of variation in the distal extremities, as well as a decrease in amplitudes in the active tone-forming range, a gradual decrease in the energy of oscillations and randomness criteria were diagnosed with standing in the duration of the disease.

Conclusions: disorders in children with diabetes mellitus type 1 microcirculatory detected using LDF are staged. Th e contribution of non-nutritive blood fl ow to microcirculation increases as the disease progresses, which leads to tissue hypoxia. Evaluation of the combination of energy, information and non-linear parameters of the oscillatory component of the blood flow allows you to identify the type of functional state in the microcirculation system.

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