Introduction. Vesicoureteral reflux (VUR) is a disease that manifests itself with pollakiuria, abdominal pain syndrome, and often is asymptomatic. In every second child, VUR is combined with bladder dysfunction: dysfunctional urination, an overactive bladder, or forms of their combination. Surgical treatment of VUR does not correct bladder dysfunction. There is a direct relationship between the risk of damage to the renal parenchyma and bladder dysfunction.
Objective. To study the condition of the bladder in children with VUR initially, as well as to track changes after endoscopic reflux correction (ECR) and in the long-term period (after 1 year).
Material and methods. The study group included 35 children aged 4 to 15 years with a diagnosis of vesicoureteral reflux, including 12 boys and 23 girls. We observed bilateral reflux in 45.7% of patients and unilateral reflux in 54.3%. The patients were examined before endoscopic correction of reflux using the Sting-uri technique, a stable DAM+ implant, one month after the procedure, and one year later. The examination was carried out using home uroflowmetry monitoring for 2 days using the SIGMA uroflowmeter model, variant F (registration certificate RZN No. 2020/11522 dated 5.08.2020). X-ray control (voiding cystourethrography): initially and one year after correction. The comparison group consisted of 121 patients aged 4 to 14 years who did not have urinary disorders or other urological pathologies. We used statistical analysis of a small sample using the Student-Fisher coefficient, chi-square, and correlation analysis.
Results. All children with VUR had deviations from the age norm in terms of the volume and speed profile. The volume profile was dominated by low urine volumes of up to 100 ml, combined with an excess of volumes exceeding 400 ml.
The speed profile was characterized by an increase in the percentage of urinations with a low flow rate. An indirect sign of a good result of ECR was the disappearance of volumes exceeding 400 ml.
Conclusion. VUR can be suspected by changes in the indicators of home uroflowmetry monitoring: the velocity and volume profile of urination. Endoscopic correction affects the indicators of volume and flow, but does not completely normalize them, which requires further treatment and monitoring of children.