Microcirculation indicators in children with bronchial asthma

In pediatric practice, non-invasive methods are relevant that allow one to study the state of blood microflow. One such method is laser Doppler flowmetry.Purpose. To evaluate the state of blood microcirculation in children with bronchial asthma by laser Doppler flowmetry during periods of exacerbation and remission of the disease.Material and methods. 40 healthy children aged 9–17 years (13.7 ± 1.8) were examined, which made up the control group. The main group of the examined were children with moderate and severe bronchial asthma (n=60) during the period of exacerbation (n=29) and remission (n=31) of similar age. To diagnose the general condition, the microcirculation of blood used a system of portable blood microcirculation LAZMA PF. From the LAZMA PF analyzers, a distributed system consisting of four devices was organized: two analyzers for simultaneous research on the 3rd finger of the hands and on the 1st toes. The record of indicators from 4 analyzers was carried out simultaneously in the position of the subject sitting for 10 minutes.Results. When studying the indicator of the microcirculatory-tissue system in children with bronchial asthma of moderate and severe severity who are in remission, we did not reveal significant differences from the indicators in healthy children. When assessing active regulation mechanisms affecting the state of microcirculation, a reliable decrease in the amplitudes of vibrations of endothelial regulation in patients with bronchial asthma compared to healthy children (p<0.05) was revealed. When comparing passive oscillations of blood flow in patients with bronchial asthma, a significant decrease in the amplitudes of oscillations in the cardiac range was revealed in comparison with the control group (p<0.05). Scope of results: medicine, pediatrics, therapy, pulmonology, allergology.Conclusion. The laser Doppler flowmetry can be used as an additional criterion for the diagnosis and control of the therapy of bronchial asthma in children.