Resume. Objective to establish the criteria for renocardial syndrome in acute nephritic syndrome in children. Material and methods: 105 children hospitalized with acute nephritic syndrome in the nephrology department of the Samarkand Regional Children's Multidisciplinary Medical Center were examined. Results: Renocardial syndrome in acute nephritic syndrome develops in 64.8% of cases, most of the patients are children 3-6 years of age (44.1%) with a predominance of boys (58.8%). Renocardial syndrome is manifested by significant changes in metabolic and adaptive parameters: oxygen and lactate content - by 1.5 times, creatine phosphate - by 20%, tension index - by 4.8 times and vascular stiffness index - by 5.2 times. Conclusion: The deviation of cardiometry parameters in different age groups indicates a decrease in the intensity of blood circulation in organs and systems, indicating a significant load on the cardiovascular system in acute nephritic syndrome. Keywords: acute nephritic syndrome, children, cardiometry, cardiorenal syndrome.