Introduction: During the COVID-19 pandemic, especially in 2022, there were 189 cases of Atypical Progressive Acute Kidney Injury (AKI) in children in Indonesia. A phenomenon has been observed where children exposed to COVID-19 accompanied by MIS-C are significantly more at risk of experiencing AKI. The role of Ultrasonography (USG) examination in children is not only to rule out obstructive urinary tract abnormalities but also to provide radiological morphological kidney images consistent with AKI conditions. Morphological features include increased kidney length, echogenicity, volume, and parenchymal thickness. In addition to severity classification (staging), a classification of AKI types in children has been proposed, categorized into Persistent and Transient AKI, referring to recovery time. Recovery is defined as a minimum one-degree decrease in severity according to KDIGO AKI Staging criteria within less than 72 hours. This categorization would facilitate management and etiological evaluation. Aims: This study aims to determine the correlation between kidney morphology and the occurrence of persistent/transient AKI classification in children. Methods: This study employed an analytical observational design with a retrospective approach. The study population comprised all medical record data of pediatric patients diagnosed with AKI aged 0-18 years at Dr. Soetomo General Teaching Hospital to assess the relationship between persistent/transient AKI and kidney morphology on USG during the COVID-19 pandemic in 2022. Result The study indicates a significant correlation between persistent/transient AKI classification groups and kidney length classification (p=0.008), total kidney volume (p=0.008), right kidney parenchymal thickness (p=0.025), left kidney parenchymal thickness (p=0.004), and echogenicity classification of kidney parenchyma (p=0.029). However, there was no significant relationship between persistent/transient AKI classification groups and the variable of obstructive uropathy features(p=0.506). Conclusion: There is a significant relationship between Persistent/Transient AKI groups and kidney morphology, specifically in kidney length classification, total kidney volume, kidney parenchymal thickness, and echogenicity classification of kidney parenchyma. However, there is no significant correlation with the variable of obstructive uropathy features.

ultrasound

persistent transient AKI

pediatric